#121D2D#121D2D

#121D2D is a very dark, muted blue. Relative luminance 0.012; OKLCH L 22.9% C 0.035 H 257.7°. Best body text is #FFFFFF at 16.94:1 contrast (WCAG AA passes).

Color values

HEX	#121D2D
RGB	rgb(18, 29, 45)
HSL	hsl(216, 43%, 12%)
HSV	hsv(216, 60%, 18%)
CMYK	cmyk(60%, 35.6%, 0%, 82.4%)
CIE-LAB	lab(10.53, 0.83, -12.23)
CIE-LCH	lch(10.53, 12.25, 273.87°)
OKLab	oklab(22.89% -0.0075 -0.0343)
OKLCH	oklch(22.89% 0.035 257.7)
XYZ	xyz(1.1623, 1.1967, 2.6519)
Luminance	0.0120 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121D2D #2D2212

analogous

#122A2D #121D2D #15122D

triadic

#121D2D #2D121D #1D2D12

tetradic

#121D2D #2D122A #2D2212 #122D15

square

#121D2D #2D122A #2D2212 #122D15

split-complementary

#121D2D #2D1512 #2A2D12

monochromatic

#090E16 #090E16 #121D2D #233959 #355584

Accessibility & contrast

On white

16.94

#121D2D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#121D2D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121D2D

16.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121D2D	#FFFFFF	#000000	##FFFFFF
##121D2D	1.00	16.94	1.24	16.94
#FFFFFF	16.94	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#171E2E

Deuteranopia (green-blind)

#141B2D

Tritanopia (blue-blind)

#062123

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #121d2d;
/* rgb */ color: rgb(18, 29, 45);
/* oklch */ color: oklch(22.9% 0.035 257.7);

Tailwind

colors: {
  custom: {
    50: '#525866',
    500: '#121d2d',
    950: '#000000',
  },
}

SCSS

$custom: #121d2d;
$custom-light: #525866;
$custom-dark: #000000;

JSON

{
  "hex": "#121d2d",
  "rgb": {
    "r": 18,
    "g": 29,
    "b": 45
  },
  "hsl": {
    "h": 215.556,
    "s": 42.857,
    "l": 12.353
  },
  "oklch": {
    "l": 0.22887,
    "c": 0.03508,
    "h": 257.7
  },
  "luminance": 0.01197
}

Semantic roles & 50–950 ramp

primary

#121D2D

secondary

#655236

accent

#A055D3

background

#F4F5F6

surface

#E7E9EB

border

#C3C5C6

text

#020305

muted

#78787A

Preview Lab

Preview with #121D2D

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

Preview Lab → · Contrast checker → · Palette generator →