#04252C#04252C

#04252C is a very dark, muted cyan. Relative luminance 0.015; OKLCH L 24.5% C 0.039 H 214.9°. Best body text is #FFFFFF at 16.08:1 contrast (WCAG AA passes).

Color values

HEX	#04252C
RGB	rgb(4, 37, 44)
HSL	hsl(191, 83%, 9%)
HSV	hsv(191, 91%, 17%)
CMYK	cmyk(90.9%, 15.9%, 0%, 82.7%)
CIE-LAB	lab(12.80, -8.83, -8.06)
CIE-LCH	lch(12.80, 11.95, 222.38°)
OKLab	oklab(24.48% -0.0323 -0.0225)
OKLCH	oklch(24.48% 0.039 214.9)
XYZ	xyz(1.1661, 1.5307, 2.6164)
Luminance	0.0153 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04252C #2C0B04

analogous

#042C1F #04252C #04112C

triadic

#04252C #2C0425 #252C04

tetradic

#04252C #1F042C #2C0B04 #112C04

square

#04252C #1F042C #2C0B04 #112C04

split-complementary

#04252C #2C0411 #2C1F04

monochromatic

#03181C #03181C #04252C #095464 #0E839C

Accessibility & contrast

On white

16.08

#04252C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#04252C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04252C

16.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04252C	#FFFFFF	#000000	##FFFFFF
##04252C	1.00	16.08	1.31	16.08
#FFFFFF	16.08	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#20232C

Deuteranopia (green-blind)

#1A1F2C

Tritanopia (blue-blind)

#002827

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #04252c;
/* rgb */ color: rgb(4, 37, 44);
/* oklch */ color: oklch(24.5% 0.039 214.9);

Tailwind

colors: {
  custom: {
    50: '#4b5f65',
    500: '#04252c',
    950: '#000000',
  },
}

SCSS

$custom: #04252c;
$custom-light: #4b5f65;
$custom-dark: #000000;

JSON

{
  "hex": "#04252c",
  "rgb": {
    "r": 4,
    "g": 37,
    "b": 44
  },
  "hsl": {
    "h": 190.5,
    "s": 83.333,
    "l": 9.412
  },
  "oklch": {
    "l": 0.24478,
    "c": 0.03934,
    "h": 214.9
  },
  "luminance": 0.01531
}

Semantic roles & 50–950 ramp

primary

#04252C

secondary

#6F2B1D

accent

#522EFA

background

#F4F5F6

surface

#E7E9EB

border

#C3C5C6

text

#010405

muted

#77797A

Preview Lab

Preview with #04252C

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

Preview Lab → · Contrast checker → · Palette generator →