#12303A#12303A

#12303A is a dark, muted cyan. Relative luminance 0.025; OKLCH L 29.1% C 0.040 H 222.7°. Best body text is #FFFFFF at 13.91:1 contrast (WCAG AA passes).

Color values

HEX	#12303A
RGB	rgb(18, 48, 58)
HSL	hsl(195, 53%, 15%)
HSV	hsv(195, 69%, 23%)
CMYK	cmyk(69%, 17.2%, 0%, 77.3%)
CIE-LAB	lab(18.13, -7.50, -9.70)
CIE-LCH	lch(18.13, 12.26, 232.29°)
OKLab	oklab(29.12% -0.0293 -0.027)
OKLCH	oklch(29.12% 0.04 222.7)
XYZ	xyz(2.0698, 2.5478, 4.3849)
Luminance	0.0255 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12303A #3A1C12

analogous

#123A30 #12303A #121C3A

triadic

#12303A #3A1230 #303A12

tetradic

#12303A #30123A #3A1C12 #1C3A12

square

#12303A #30123A #3A1C12 #1C3A12

split-complementary

#12303A #3A121C #3A3012

monochromatic

#071317 #071317 #12303A #205769 #2F7D97

Accessibility & contrast

On white

13.91

#12303A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#12303A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12303A

13.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12303A	#FFFFFF	#000000	##FFFFFF
##12303A	1.00	13.91	1.51	13.91
#FFFFFF	13.91	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A2F3B

Deuteranopia (green-blind)

#242A3A

Tritanopia (blue-blind)

#003333

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #12303a;
/* rgb */ color: rgb(18, 48, 58);
/* oklch */ color: oklch(29.1% 0.040 222.7);

Tailwind

colors: {
  custom: {
    50: '#556870',
    500: '#12303a',
    950: '#000000',
  },
}

SCSS

$custom: #12303a;
$custom-light: #556870;
$custom-dark: #000000;

JSON

{
  "hex": "#12303a",
  "rgb": {
    "r": 18,
    "g": 48,
    "b": 58
  },
  "hsl": {
    "h": 195,
    "s": 52.632,
    "l": 14.902
  },
  "oklch": {
    "l": 0.29122,
    "c": 0.03984,
    "h": 222.7
  },
  "luminance": 0.02548
}

Semantic roles & 50–950 ramp

primary

#12303A

secondary

#734435

accent

#704CDC

background

#F5F6F6

surface

#E9EBEC

border

#C5C6C7

text

#030607

muted

#787A7A

Preview Lab

Preview with #12303A

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

Preview Lab → · Contrast checker → · Palette generator →