#04303A#04303A

#04303A is a dark, muted cyan. Relative luminance 0.024; OKLCH L 28.6% C 0.048 H 217.3°. Best body text is #FFFFFF at 14.10:1 contrast (WCAG AA passes).

Color values

HEX	#04303A
RGB	rgb(4, 48, 58)
HSL	hsl(191, 87%, 12%)
HSV	hsv(191, 93%, 23%)
CMYK	cmyk(93.1%, 17.2%, 0%, 77.3%)
CIE-LAB	lab(17.67, -10.13, -10.46)
CIE-LCH	lch(17.67, 14.56, 225.91°)
OKLab	oklab(28.62% -0.0384 -0.0292)
OKLCH	oklch(28.62% 0.048 217.3)
XYZ	xyz(1.8704, 2.4450, 4.3755)
Luminance	0.0244 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04303A #3A0E04

analogous

#043A29 #04303A #04153A

triadic

#04303A #3A0430 #303A04

tetradic

#04303A #29043A #3A0E04 #153A04

square

#04303A #29043A #3A0E04 #153A04

split-complementary

#04303A #3A0415 #3A2904

monochromatic

#02181D #02181D #04303A #085F73 #0C8FAD

Accessibility & contrast

On white

14.10

#04303A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.49

#04303A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04303A

14.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04303A	#FFFFFF	#000000	##FFFFFF
##04303A	1.00	14.10	1.49	14.10
#FFFFFF	14.10	1.00	21.00	1.00
#000000	1.49	21.00	1.00	21.00
##FFFFFF	14.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#292E3B

Deuteranopia (green-blind)

#22293A

Tritanopia (blue-blind)

#003333

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #04303a;
/* rgb */ color: rgb(4, 48, 58);
/* oklch */ color: oklch(28.6% 0.048 217.3);

Tailwind

colors: {
  custom: {
    50: '#4f6870',
    500: '#04303a',
    950: '#000000',
  },
}

SCSS

$custom: #04303a;
$custom-light: #4f6870;
$custom-dark: #000000;

JSON

{
  "hex": "#04303a",
  "rgb": {
    "r": 4,
    "g": 48,
    "b": 58
  },
  "hsl": {
    "h": 191.111,
    "s": 87.097,
    "l": 12.157
  },
  "oklch": {
    "l": 0.28617,
    "c": 0.0483,
    "h": 217.3
  },
  "luminance": 0.02445
}

Semantic roles & 50–950 ramp

primary

#04303A

secondary

#7C2F1E

accent

#522BFD

background

#F4F6F6

surface

#E7EBEC

border

#C3C6C7

text

#020607

muted

#787A7A

Preview Lab

Preview with #04303A

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

Preview Lab → · Contrast checker → · Palette generator →