#04253A#04253A

#04253A is a dark, muted cyan. Relative luminance 0.017; OKLCH L 25.3% C 0.054 H 241.5°. Best body text is #FFFFFF at 15.78:1 contrast (WCAG AA passes).

Color values

HEX	#04253A
RGB	rgb(4, 37, 58)
HSL	hsl(203, 87%, 12%)
HSV	hsv(203, 93%, 23%)
CMYK	cmyk(93.1%, 36.2%, 0%, 77.3%)
CIE-LAB	lab(13.56, -2.68, -16.85)
CIE-LCH	lch(13.56, 17.06, 260.95°)
OKLab	oklab(25.33% -0.026 -0.0478)
OKLCH	oklch(25.33% 0.054 241.5)
XYZ	xyz(1.4751, 1.6543, 4.2437)
Luminance	0.0165 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04253A #3A1904

analogous

#043A34 #04253A #040A3A

triadic

#04253A #3A0425 #253A04

tetradic

#04253A #34043A #3A1904 #0A3A04

square

#04253A #34043A #3A1904 #0A3A04

split-complementary

#04253A #3A040A #3A3404

monochromatic

#02121D #02121D #04253A #084A73 #0C6EAD

Accessibility & contrast

On white

15.78

#04253A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#04253A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04253A

15.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04253A	#FFFFFF	#000000	##FFFFFF
##04253A	1.00	15.78	1.33	15.78
#FFFFFF	15.78	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B253B

Deuteranopia (green-blind)

#13203A

Tritanopia (blue-blind)

#002A2C

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #04253a;
/* rgb */ color: rgb(4, 37, 58);
/* oklch */ color: oklch(25.3% 0.054 241.5);

Tailwind

colors: {
  custom: {
    50: '#4e5f70',
    500: '#04253a',
    950: '#000000',
  },
}

SCSS

$custom: #04253a;
$custom-light: #4e5f70;
$custom-dark: #000000;

JSON

{
  "hex": "#04253a",
  "rgb": {
    "r": 4,
    "g": 37,
    "b": 58
  },
  "hsl": {
    "h": 203.333,
    "s": 87.097,
    "l": 12.157
  },
  "oklch": {
    "l": 0.25331,
    "c": 0.05442,
    "h": 241.5
  },
  "luminance": 0.01654
}

Semantic roles & 50–950 ramp

primary

#04253A

secondary

#7C421E

accent

#7C2BFD

background

#F4F5F6

surface

#E7E9EC

border

#C3C5C7

text

#020407

muted

#78797A

Preview Lab

Preview with #04253A

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

Preview Lab → · Contrast checker → · Palette generator →