#121D3D#121D3D

#121D3D is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 24.0% C 0.063 H 267.3°. Best body text is #FFFFFF at 16.55:1 contrast (WCAG AA passes).

Color values

HEX	#121D3D
RGB	rgb(18, 29, 61)
HSL	hsl(225, 54%, 15%)
HSV	hsv(225, 70%, 24%)
CMYK	cmyk(70.5%, 52.5%, 0%, 76.1%)
CIE-LAB	lab(11.58, 7.39, -22.07)
CIE-LCH	lch(11.58, 23.27, 288.51°)
OKLab	oklab(24.04% -0.003 -0.063)
OKLCH	oklch(24.04% 0.063 267.3)
XYZ	xyz(1.5308, 1.3441, 4.5927)
Luminance	0.0134 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121D3D #3D3212

analogous

#12323D #121D3D #1C123D

triadic

#121D3D #3D121D #1D3D12

tetradic

#121D3D #3D1232 #3D3212 #123D1C

square

#121D3D #3D1232 #3D3212 #123D1C

split-complementary

#121D3D #3D1C12 #323D12

monochromatic

#070B18 #070B18 #121D3D #20336C #2E4A9C

Accessibility & contrast

On white

16.55

#121D3D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#121D3D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121D3D

16.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121D3D	#FFFFFF	#000000	##FFFFFF
##121D3D	1.00	16.55	1.27	16.55
#FFFFFF	16.55	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E213E

Deuteranopia (green-blind)

#071D3C

Tritanopia (blue-blind)

#00242A

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #121d3d;
/* rgb */ color: rgb(18, 29, 61);
/* oklch */ color: oklch(24.0% 0.063 267.3);

Tailwind

colors: {
  custom: {
    50: '#555873',
    500: '#121d3d',
    950: '#000000',
  },
}

SCSS

$custom: #121d3d;
$custom-light: #555873;
$custom-dark: #000000;

JSON

{
  "hex": "#121d3d",
  "rgb": {
    "r": 18,
    "g": 29,
    "b": 61
  },
  "hsl": {
    "h": 224.651,
    "s": 54.43,
    "l": 15.49
  },
  "oklch": {
    "l": 0.24039,
    "c": 0.06307,
    "h": 267.3
  },
  "luminance": 0.01344
}

Semantic roles & 50–950 ramp

primary

#121D3D

secondary

#766535

accent

#B84ADE

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#030308

muted

#78787B

Preview Lab

Preview with #121D3D

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

Preview Lab → · Contrast checker → · Palette generator →