#12303D#12303D

#12303D is a dark, muted cyan. Relative luminance 0.026; OKLCH L 29.3% C 0.043 H 229.1°. Best body text is #FFFFFF at 13.85:1 contrast (WCAG AA passes).

Color values

HEX	#12303D
RGB	rgb(18, 48, 61)
HSL	hsl(198, 54%, 15%)
HSV	hsv(198, 70%, 24%)
CMYK	cmyk(70.5%, 21.3%, 0%, 76.1%)
CIE-LAB	lab(18.27, -6.36, -11.55)
CIE-LCH	lch(18.27, 13.19, 241.18°)
OKLab	oklab(29.28% -0.0279 -0.0323)
OKLCH	oklch(29.28% 0.043 229.1)
XYZ	xyz(2.1484, 2.5792, 4.7986)
Luminance	0.0258 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12303D #3D1F12

analogous

#123D34 #12303D #121A3D

triadic

#12303D #3D1230 #303D12

tetradic

#12303D #34123D #3D1F12 #1A3D12

square

#12303D #34123D #3D1F12 #1A3D12

split-complementary

#12303D #3D121A #3D3412

monochromatic

#071318 #071318 #12303D #20556C #2E7A9C

Accessibility & contrast

On white

13.85

#12303D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#12303D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12303D

13.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12303D	#FFFFFF	#000000	##FFFFFF
##12303D	1.00	13.85	1.52	13.85
#FFFFFF	13.85	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#292F3E

Deuteranopia (green-blind)

#232B3D

Tritanopia (blue-blind)

#003434

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #12303d;
/* rgb */ color: rgb(18, 48, 61);
/* oklch */ color: oklch(29.3% 0.043 229.1);

Tailwind

colors: {
  custom: {
    50: '#556872',
    500: '#12303d',
    950: '#000000',
  },
}

SCSS

$custom: #12303d;
$custom-light: #556872;
$custom-dark: #000000;

JSON

{
  "hex": "#12303d",
  "rgb": {
    "r": 18,
    "g": 48,
    "b": 61
  },
  "hsl": {
    "h": 198.14,
    "s": 54.43,
    "l": 15.49
  },
  "oklch": {
    "l": 0.2928,
    "c": 0.04266,
    "h": 229.1
  },
  "luminance": 0.02579
}

Semantic roles & 50–950 ramp

primary

#12303D

secondary

#764935

accent

#774ADE

background

#F5F6F6

surface

#E9EBEC

border

#C5C6C7

text

#030608

muted

#787A7B

Preview Lab

Preview with #12303D

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

Preview Lab → · Contrast checker → · Palette generator →