#04233B#04233B

#04233B is a very dark, muted cyan. Relative luminance 0.015; OKLCH L 24.8% C 0.058 H 246.1°. Best body text is #FFFFFF at 16.05:1 contrast (WCAG AA passes).

Color values

HEX	#04233B
RGB	rgb(4, 35, 59)
HSL	hsl(206, 87%, 12%)
HSV	hsv(206, 93%, 23%)
CMYK	cmyk(93.2%, 40.7%, 0%, 76.9%)
CIE-LAB	lab(12.88, -0.76, -18.62)
CIE-LCH	lch(12.88, 18.64, 267.65°)
OKLab	oklab(24.82% -0.0234 -0.053)
OKLCH	oklch(24.82% 0.058 246.1)
XYZ	xyz(1.4402, 1.5435, 4.3588)
Luminance	0.0154 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04233B #3B1C04

analogous

#043B38 #04233B #04073B

triadic

#04233B #3B0423 #233B04

tetradic

#04233B #38043B #3B1C04 #073B04

square

#04233B #38043B #3B1C04 #073B04

split-complementary

#04233B #3B0407 #3B3804

monochromatic

#02111D #02111D #04233B #084574 #0C67AE

Accessibility & contrast

On white

16.05

#04233B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#04233B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04233B

16.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04233B	#FFFFFF	#000000	##FFFFFF
##04233B	1.00	16.05	1.31	16.05
#FFFFFF	16.05	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#18243C

Deuteranopia (green-blind)

#0F1F3B

Tritanopia (blue-blind)

#00292C

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #04233b;
/* rgb */ color: rgb(4, 35, 59);
/* oklch */ color: oklch(24.8% 0.058 246.1);

Tailwind

colors: {
  custom: {
    50: '#4e5d71',
    500: '#04233b',
    950: '#000000',
  },
}

SCSS

$custom: #04233b;
$custom-light: #4e5d71;
$custom-dark: #000000;

JSON

{
  "hex": "#04233b",
  "rgb": {
    "r": 4,
    "g": 35,
    "b": 59
  },
  "hsl": {
    "h": 206.182,
    "s": 87.302,
    "l": 12.353
  },
  "oklch": {
    "l": 0.24818,
    "c": 0.05799,
    "h": 246.1
  },
  "luminance": 0.01544
}

Semantic roles & 50–950 ramp

primary

#04233B

secondary

#7D471E

accent

#862AFD

background

#F4F5F6

surface

#E7E9EC

border

#C3C5C7

text

#020407

muted

#78797A

Preview Lab

Preview with #04233B

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

Preview Lab → · Contrast checker → · Palette generator →