#04283A#04283A

#04283A is a dark, muted cyan. Relative luminance 0.018; OKLCH L 26.2% C 0.052 H 235.5°. Best body text is #FFFFFF at 15.33:1 contrast (WCAG AA passes).

Color values

HEX	#04283A
RGB	rgb(4, 40, 58)
HSL	hsl(200, 87%, 12%)
HSV	hsv(200, 93%, 23%)
CMYK	cmyk(93.1%, 31%, 0%, 77.3%)
CIE-LAB	lab(14.67, -4.81, -15.10)
CIE-LCH	lch(14.67, 15.85, 252.33°)
OKLab	oklab(26.22% -0.0293 -0.0427)
OKLCH	oklch(26.22% 0.052 235.5)
XYZ	xyz(1.5723, 1.8487, 4.2761)
Luminance	0.0185 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04283A #3A1604

analogous

#043A31 #04283A #040D3A

triadic

#04283A #3A0428 #283A04

tetradic

#04283A #31043A #3A1604 #0D3A04

square

#04283A #31043A #3A1604 #0D3A04

split-complementary

#04283A #3A040D #3A3104

monochromatic

#02141D #02141D #04283A #084F73 #0C77AD

Accessibility & contrast

On white

15.33

#04283A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#04283A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04283A

15.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04283A	#FFFFFF	#000000	##FFFFFF
##04283A	1.00	15.33	1.37	15.33
#FFFFFF	15.33	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F283B

Deuteranopia (green-blind)

#18233A

Tritanopia (blue-blind)

#002D2E

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #04283a;
/* rgb */ color: rgb(4, 40, 58);
/* oklch */ color: oklch(26.2% 0.052 235.5);

Tailwind

colors: {
  custom: {
    50: '#4e6170',
    500: '#04283a',
    950: '#000000',
  },
}

SCSS

$custom: #04283a;
$custom-light: #4e6170;
$custom-dark: #000000;

JSON

{
  "hex": "#04283a",
  "rgb": {
    "r": 4,
    "g": 40,
    "b": 58
  },
  "hsl": {
    "h": 200,
    "s": 87.097,
    "l": 12.157
  },
  "oklch": {
    "l": 0.26217,
    "c": 0.05176,
    "h": 235.5
  },
  "luminance": 0.01849
}

Semantic roles & 50–950 ramp

primary

#04283A

secondary

#7C3D1E

accent

#712BFD

background

#F4F5F6

surface

#E7E9EC

border

#C3C5C7

text

#020507

muted

#78797A

Preview Lab

Preview with #04283A

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

Preview Lab → · Contrast checker → · Palette generator →