Colors Encyclopedia

HEX atlas value

#30475E

#30475E is a cool blue HEX color nearest Slate Navy. RGB 48, 71, 94, HSL 210° 32% 28%, luminance 0.0594; view contrast and conversions.

bluecoolbalanced
#30475E Sample readable text
HEX #30475E
RGB rgb(48, 71, 94)
HSL hsl(210 32% 28%)
CMYK cmyk(49, 24, 0, 63)
Luminance 0.0594
Contrast Black 2.19:1White 9.6:1

CSS

--color-30475e: #30475E;
.background-30475e { background-color: #30475E; }
.text-30475e { color: #30475E; }

HEX meaning and use

About #30475E

#30475E is classified as a cool blue value with balanced visual character. #30475E is visually closest to Slate Navy, a named blue color with HEX #30475E.

The RGB channels are 48, 71, and 94, with blue carrying the strongest channel weight. In HSL, the hue is 210deg with 32% saturation and 28% lightness, so this page treats it as a low-saturation, dark atlas color rather than a generic swatch.

Practical uses for this HEX value include color conversion, WCAG contrast checks, CSS color tokens, and calm digital interfaces. Its luminance is 0.0594, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 0.00, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text2.19:1AA Fail
White text9.6:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: #FFFFFF, #F5F5F5.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #30475E needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000002.19:1 · Fail
White text#FFFFFF9.6:1 · AAA

Accessible Alternatives

#111922#111922 · #FFFFFF text · best 17.71:1#31315E#31315E · #FFFFFF text · best 12.12:1Charcoal#36454F · #FFFFFF text · best 9.9:1#21476E#21476E · #FFFFFF text · best 9.58:1#40474F#40474F · #FFFFFF text · best 9.41:1

Generated Palette

Slate Navy#30475E
#5E4731#5E4731
#315E5E#315E5E
#31315E#31315E
#50759B#50759B
#111922#111922

Color Harmonies

#5E4731#5E4731
#315E5E#315E5E
#31315E#31315E
#5E3147#5E3147
#475E31#475E31

Variants

#50759B#50759B
#111922#111922
#21476E#21476E
#40474F#40474F
#73879C#73879C
#005CB8#005CB8

Nearest Named Colors

Slate Navy#30475E
Charcoal#36454F
Dark Slate Gray#2F4F4F
Dark Slate Grey#2F4F4F
Spruce#2E4F4F

Machine-readable data

Machine-Readable HEX Data (JSON)

Structured HEX color data for conversion, WCAG checks, CSS generation, automation, and AI ingestion.

AI-Ready Dataset v1.0.0
Luminance0.0594
Black text2.19:1AA Fail
White text9.6:1AA Pass
hexCanonical HEX value
rgbRed, green, blue channels
hslHue, saturation, lightness
cmykApproximate print conversion
wcagAA and AAA contrast options
harmoniesMathematical harmony sets
variantsGenerated tone variants
nearestColorsKnowledge graph neighbors
Download JSON Open API
Structured sections
Color systems
{"hex":"#30475E","rgb":[48,71,94],"hsl":[210,32,28],"cmyk":[49,24,0,63],"luminance":0.0594,"contrast":{"black":2.19,"white":9.6}}
WCAG
{"AA":["#FFFFFF","#F5F5F5"],"AAA":["#FFFFFF","#F5F5F5"]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":2.19,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":9.6,"wcagAA":true,"wcagAAA":true}]
Accessible alternatives
[{"name":"#111922","hex":"#111922","family":"blue","bestTextColor":"#FFFFFF","contrastBlack":1.19,"contrastWhite":17.71,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#31315E","hex":"#31315E","family":"blue","bestTextColor":"#FFFFFF","contrastBlack":1.73,"contrastWhite":12.12,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Charcoal","hex":"#36454F","family":"blue","bestTextColor":"#FFFFFF","contrastBlack":2.12,"contrastWhite":9.9,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#21476E","hex":"#21476E","family":"blue","bestTextColor":"#FFFFFF","contrastBlack":2.19,"contrastWhite":9.58,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#40474F","hex":"#40474F","family":"blue","bestTextColor":"#FFFFFF","contrastBlack":2.23,"contrastWhite":9.41,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]}]
AI context
{"semanticGroups":["cool blue","balanced","balanced blue","Slate Navy adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","calm digital interfaces"],"contrastSafeWith":["#FFFFFF","#F5F5F5"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/30475e.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/slate-navy.json","https://www.colorsencyclopedia.com/api/colors/charcoal.json","https://www.colorsencyclopedia.com/api/colors/dark-slate-gray.json"]}
Harmonies
{"complementary":"#5E4731","analogous":["#315E5E","#31315E"],"triadic":["#5E3147","#475E31"],"tetradic":["#5E315E","#5E4731","#315E31"],"splitComplementary":["#5E3131","#5E5E31"],"monochromatic":["#50759B","#30475E","#111922"]}
Variants
{"light":"#50759B","dark":"#111922","saturated":"#21476E","desaturated":"#40474F","pastel":"#73879C","neon":"#005CB8"}
Nearest named colors
[{"slug":"slate-navy","name":"Slate Navy","hex":"#30475E","distance":0},{"slug":"charcoal","name":"Charcoal","hex":"#36454F","distance":16.278820596099706},{"slug":"dark-slate-gray","name":"Dark Slate Gray","hex":"#2F4F4F","distance":17.029386365926403},{"slug":"dark-slate-grey","name":"Dark Slate Grey","hex":"#2F4F4F","distance":17.029386365926403},{"slug":"spruce","name":"Spruce","hex":"#2E4F4F","distance":17.11724276862369}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

Related HEX Guides

Slate Navy colorOpen the nearest named color reference for #30475E.Charcoal colorOpen the nearest named color reference for #36454F.Dark Slate Gray colorOpen the nearest named color reference for #2F4F4F.Blue color familyBrowse named blue colors related to this HEX value.Cool colorsExplore colors with similar temperature behavior.Balanced colorsFind colors in the balanced group.Color palettesBrowse palette systems related to generated color combinations.Compare colorsCompare named colors near this HEX value.Accessible colorsBrowse WCAG-friendly named colors and safe text options.#30475E APIOpen the machine-readable JSON record for this HEX value.