HEX atlas value

#2A3439

#2A3439 is a cool blue HEX color nearest Gunmetal. RGB 42, 52, 57, HSL 200° 15% 19%, luminance 0.0324; view contrast and conversions.

blue cool dark

#2A3439 Sample readable text

HEX #2A3439

RGB rgb(42, 52, 57)

HSL hsl(200 15% 19%)

CMYK cmyk(26, 9, 0, 78)

Luminance 0.0324

Contrast Black 1.65:1White 12.74:1

CSS

--color-2a3439: #2A3439;
.background-2a3439 { background-color: #2A3439; }
.text-2a3439 { color: #2A3439; }

HEX meaning and use

About #2A3439

#2A3439 is classified as a cool blue value with dark visual character. #2A3439 is visually closest to Gunmetal, a named blue color with HEX #2A3439.

The RGB channels are 42, 52, and 57, with blue carrying the strongest channel weight. In HSL, the hue is 200deg with 15% saturation and 19% 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 dark theme accents. Its luminance is 0.0324, 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 text1.65:1AA Fail

White text12.74:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: #FFFFFF, #F5F5F5.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #2A3439 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000001.65:1 · Fail

White text#FFFFFF12.74:1 · AAA

Accessible Alternatives

#020303#020303 · #FFFFFF text · best 20.67:1 #292C38#292C38 · #FFFFFF text · best 13.89:1 #382E29#382E29 · #FFFFFF text · best 13.21:1 #303030#303030 · #FFFFFF text · best 13.19:1 Charcoal Blue#263238 · #FFFFFF text · best 13.16:1

Generated Palette

Gunmetal#2A3439

#382E29#382E29

#293835#293835

#292C38#292C38

#50636D#50636D

#020303#020303

Color Harmonies

#382E29#382E29

#293835#293835

#292C38#292C38

#382933#382933

#333829#333829

Variants

#50636D#50636D

#020303#020303

#1F3642#1F3642

#303030#303030

#707070#707070

#005C8A#005C8A

Nearest Named Colors

Gunmetal#2A3439

Charcoal Blue#263238

Jet#343434

Onyx#353839

Graphite#383838

Luminance0.0324

Black text1.65:1AA Fail

White text12.74:1AA 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

Structured sections

Color systems

{"hex":"#2A3439","rgb":[42,52,57],"hsl":[200,15,19],"cmyk":[26,9,0,78],"luminance":0.0324,"contrast":{"black":1.65,"white":12.74}}

WCAG

{"AA":["#FFFFFF","#F5F5F5"],"AAA":["#FFFFFF","#F5F5F5"]}

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":1.65,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":12.74,"wcagAA":true,"wcagAAA":true}]

Accessible alternatives

[{"name":"#020303","hex":"#020303","family":"cyan","bestTextColor":"#FFFFFF","contrastBlack":1.02,"contrastWhite":20.67,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#292C38","hex":"#292C38","family":"blue","bestTextColor":"#FFFFFF","contrastBlack":1.51,"contrastWhite":13.89,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#382E29","hex":"#382E29","family":"orange","bestTextColor":"#FFFFFF","contrastBlack":1.59,"contrastWhite":13.21,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#303030","hex":"#303030","family":"gray","bestTextColor":"#FFFFFF","contrastBlack":1.59,"contrastWhite":13.19,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Charcoal Blue","hex":"#263238","family":"blue","bestTextColor":"#FFFFFF","contrastBlack":1.6,"contrastWhite":13.16,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]}]

AI context

{"semanticGroups":["cool blue","dark","dark blue","Gunmetal adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","dark theme accents","calm digital interfaces"],"contrastSafeWith":["#FFFFFF","#F5F5F5"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/2a3439.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/gunmetal.json","https://www.colorsencyclopedia.com/api/colors/charcoal-blue.json","https://www.colorsencyclopedia.com/api/colors/jet.json"]}

Harmonies

{"complementary":"#382E29","analogous":["#293835","#292C38"],"triadic":["#382933","#333829"],"tetradic":["#352938","#382E29","#2C3829"],"splitComplementary":["#38292C","#383529"],"monochromatic":["#50636D","#2A3439","#020303"]}

Variants

{"light":"#50636D","dark":"#020303","saturated":"#1F3642","desaturated":"#303030","pastel":"#707070","neon":"#005C8A"}

Nearest named colors

[{"slug":"gunmetal","name":"Gunmetal","hex":"#2A3439","distance":0},{"slug":"charcoal-blue","name":"Charcoal Blue","hex":"#263238","distance":4.58257569495584},{"slug":"jet","name":"Jet","hex":"#343434","distance":11.180339887498949},{"slug":"onyx","name":"Onyx","hex":"#353839","distance":11.704699910719626},{"slug":"graphite","name":"Graphite","hex":"#383838","distance":14.594519519326424}]

#2A3439

CSS

About #2A3439

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Machine-Readable HEX Data (JSON)

Related HEX Guides