HEX atlas value

#263238

#263238 is a cool blue HEX color nearest Charcoal Blue. RGB 38, 50, 56, HSL 200° 19% 18%, luminance 0.0298; view contrast and conversions.

blue cool dark

#263238 Sample readable text

HEX #263238

RGB rgb(38, 50, 56)

HSL hsl(200 19% 18%)

CMYK cmyk(32, 11, 0, 78)

Luminance 0.0298

Contrast Black 1.6:1White 13.16:1

CSS

--color-263238: #263238;
.background-263238 { background-color: #263238; }
.text-263238 { color: #263238; }

HEX meaning and use

About #263238

#263238 is classified as a cool blue value with dark visual character. #263238 is visually closest to Charcoal Blue, a named blue color with HEX #263238.

The RGB channels are 38, 50, and 56, with blue carrying the strongest channel weight. In HSL, the hue is 200deg with 19% saturation and 18% 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 0.0298, 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 text1.6:1AA Fail

White text13.16:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: #FFFFFF, #F5F5F5.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #263238 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000001.6:1 · Fail

White text#FFFFFF13.16:1 · AAA

Accessible Alternatives

Black#000000 · #FFFFFF text · best 21:1 #252837#252837 · #FFFFFF text · best 14.6:1 Asphalt#2B2B2B · #FFFFFF text · best 14.15:1 #372B25#372B25 · #FFFFFF text · best 13.69:1 #2E2E2E#2E2E2E · #FFFFFF text · best 13.58:1

Generated Palette

Charcoal Blue#263238

#372B25#372B25

#253734#253734

#252837#252837

#4A626D#4A626D

Black#000000

Color Harmonies

#372B25#372B25

#253734#253734

#252837#252837

#372531#372531

#313725#313725

Variants

#4A626D#4A626D

Black#000000

#1B3441#1B3441

#2E2E2E#2E2E2E

#696F72#696F72

#005885#005885

Nearest Named Colors

Charcoal Blue#263238

Gunmetal#2A3439

Jet#343434

Asphalt#2B2B2B

Onyx#353839

Luminance0.0298

Black text1.6:1AA Fail

White text13.16:1AA 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":"#263238","rgb":[38,50,56],"hsl":[200,19,18],"cmyk":[32,11,0,78],"luminance":0.0298,"contrast":{"black":1.6,"white":13.16}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":1.6,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":13.16,"wcagAA":true,"wcagAAA":true}]

Accessible alternatives

[{"name":"Black","hex":"#000000","family":"gray","bestTextColor":"#FFFFFF","contrastBlack":1,"contrastWhite":21,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#252837","hex":"#252837","family":"blue","bestTextColor":"#FFFFFF","contrastBlack":1.44,"contrastWhite":14.6,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Asphalt","hex":"#2B2B2B","family":"gray","bestTextColor":"#FFFFFF","contrastBlack":1.48,"contrastWhite":14.15,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#372B25","hex":"#372B25","family":"orange","bestTextColor":"#FFFFFF","contrastBlack":1.53,"contrastWhite":13.69,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#2E2E2E","hex":"#2E2E2E","family":"gray","bestTextColor":"#FFFFFF","contrastBlack":1.55,"contrastWhite":13.58,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]}]

AI context

{"semanticGroups":["cool blue","dark","dark blue","Charcoal Blue 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/263238.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/charcoal-blue.json","https://www.colorsencyclopedia.com/api/colors/gunmetal.json","https://www.colorsencyclopedia.com/api/colors/jet.json"]}

Harmonies

{"complementary":"#372B25","analogous":["#253734","#252837"],"triadic":["#372531","#313725"],"tetradic":["#342537","#372B25","#283725"],"splitComplementary":["#372528","#373425"],"monochromatic":["#4A626D","#263238","#000000"]}

Variants

{"light":"#4A626D","dark":"#000000","saturated":"#1B3441","desaturated":"#2E2E2E","pastel":"#696F72","neon":"#005885"}

Nearest named colors

[{"slug":"charcoal-blue","name":"Charcoal Blue","hex":"#263238","distance":0},{"slug":"gunmetal","name":"Gunmetal","hex":"#2A3439","distance":4.58257569495584},{"slug":"jet","name":"Jet","hex":"#343434","distance":14.696938456699069},{"slug":"asphalt","name":"Asphalt","hex":"#2B2B2B","distance":15.588457268119896},{"slug":"onyx","name":"Onyx","hex":"#353839","distance":16.186414056238647}]

#263238

CSS

About #263238

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