#04283F#04283F

#04283F is a dark, muted cyan. Relative luminance 0.019; OKLCH L 26.5% C 0.058 H 242.1°. Best body text is #FFFFFF at 15.21:1 contrast (WCAG AA passes).

Color values

HEX	#04283F
RGB	rgb(4, 40, 63)
HSL	hsl(203, 88%, 13%)
HSV	hsv(203, 94%, 25%)
CMYK	cmyk(93.7%, 36.5%, 0%, 75.3%)
CIE-LAB	lab(14.96, -2.56, -18.13)
CIE-LCH	lch(14.96, 18.31, 261.95°)
OKLab	oklab(26.55% -0.0273 -0.0515)
OKLCH	oklch(26.55% 0.058 242.1)
XYZ	xyz(1.7057, 1.9021, 4.9789)
Luminance	0.0190 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04283F #3F1B04

analogous

#043F38 #04283F #040A3F

triadic

#04283F #3F0428 #283F04

tetradic

#04283F #38043F #3F1B04 #0A3F04

square

#04283F #38043F #3F1B04 #0A3F04

split-complementary

#04283F #3F040A #3F3804

monochromatic

#02121D #02121D #04283F #084D79 #0B71B2

Accessibility & contrast

On white

15.21

#04283F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#04283F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04283F

15.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04283F	#FFFFFF	#000000	##FFFFFF
##04283F	1.00	15.21	1.38	15.21
#FFFFFF	15.21	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D2940

Deuteranopia (green-blind)

#15233F

Tritanopia (blue-blind)

#002E30

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #04283f;
/* rgb */ color: rgb(4, 40, 63);
/* oklch */ color: oklch(26.5% 0.058 242.1);

Tailwind

colors: {
  custom: {
    50: '#506174',
    500: '#04283f',
    950: '#000000',
  },
}

SCSS

$custom: #04283f;
$custom-light: #506174;
$custom-dark: #000000;

JSON

{
  "hex": "#04283f",
  "rgb": {
    "r": 4,
    "g": 40,
    "b": 63
  },
  "hsl": {
    "h": 203.39,
    "s": 88.06,
    "l": 13.137
  },
  "oklch": {
    "l": 0.26545,
    "c": 0.05831,
    "h": 242.1
  },
  "luminance": 0.01902
}

Semantic roles & 50–950 ramp

primary

#04283F

secondary

#80451E

accent

#7C2AFE

background

#F4F5F7

surface

#E7E9ED

border

#C3C5C8

text

#020508

muted

#78797B

Preview Lab

Preview with #04283F

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →