#121D3E#121D3E

#121D3E is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 24.1% C 0.065 H 267.5°. Best body text is #FFFFFF at 16.52:1 contrast (WCAG AA passes).

Color values

HEX	#121D3E
RGB	rgb(18, 29, 62)
HSL	hsl(225, 55%, 16%)
HSV	hsv(225, 71%, 24%)
CMYK	cmyk(71%, 53.2%, 0%, 75.7%)
CIE-LAB	lab(11.65, 7.81, -22.66)
CIE-LCH	lch(11.65, 23.96, 289.02°)
OKLab	oklab(24.12% -0.0028 -0.0647)
OKLCH	oklch(24.12% 0.065 267.5)
XYZ	xyz(1.5580, 1.3550, 4.7359)
Luminance	0.0135 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121D3E #3E3312

analogous

#12333E #121D3E #1D123E

triadic

#121D3E #3E121D #1D3E12

tetradic

#121D3E #3E1233 #3E3312 #123E1D

square

#121D3E #3E1233 #3E3312 #123E1D

split-complementary

#121D3E #3E1D12 #333E12

monochromatic

#070B18 #070B18 #121D3E #20336D #2E499D

Accessibility & contrast

On white

16.52

#121D3E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#121D3E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121D3E

16.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121D3E	#FFFFFF	#000000	##FFFFFF
##121D3E	1.00	16.52	1.27	16.52
#FFFFFF	16.52	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D213F

Deuteranopia (green-blind)

#061D3D

Tritanopia (blue-blind)

#00252A

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #121d3e;
/* rgb */ color: rgb(18, 29, 62);
/* oklch */ color: oklch(24.1% 0.065 267.5);

Tailwind

colors: {
  custom: {
    50: '#555873',
    500: '#121d3e',
    950: '#000000',
  },
}

SCSS

$custom: #121d3e;
$custom-light: #555873;
$custom-dark: #000000;

JSON

{
  "hex": "#121d3e",
  "rgb": {
    "r": 18,
    "g": 29,
    "b": 62
  },
  "hsl": {
    "h": 225,
    "s": 55,
    "l": 15.686
  },
  "oklch": {
    "l": 0.2412,
    "c": 0.06479,
    "h": 267.5
  },
  "luminance": 0.01355
}

Semantic roles & 50–950 ramp

primary

#121D3E

secondary

#776635

accent

#B949DE

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030308

muted

#78787B

Preview Lab

Preview with #121D3E

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

Preview Lab → · Contrast checker → · Palette generator →