#121F3D#121F3D

#121F3D is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 24.6% C 0.060 H 264.7°. Best body text is #FFFFFF at 16.29:1 contrast (WCAG AA passes).

Color values

HEX	#121F3D
RGB	rgb(18, 31, 61)
HSL	hsl(222, 54%, 15%)
HSV	hsv(222, 70%, 24%)
CMYK	cmyk(70.5%, 49.2%, 0%, 76.1%)
CIE-LAB	lab(12.26, 5.85, -20.99)
CIE-LCH	lch(12.26, 21.79, 285.58°)
OKLab	oklab(24.56% -0.0055 -0.0598)
OKLCH	oklch(24.56% 0.06 264.7)
XYZ	xyz(1.5815, 1.4454, 4.6096)
Luminance	0.0144 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121F3D #3D3012

analogous

#12343D #121F3D #1A123D

triadic

#121F3D #3D121F #1F3D12

tetradic

#121F3D #3D1234 #3D3012 #123D1A

square

#121F3D #3D1234 #3D3012 #123D1A

split-complementary

#121F3D #3D1A12 #343D12

monochromatic

#070C18 #070C18 #121F3D #20376C #2E4F9C

Accessibility & contrast

On white

16.29

#121F3D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#121F3D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121F3D

16.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121F3D	#FFFFFF	#000000	##FFFFFF
##121F3D	1.00	16.29	1.29	16.29
#FFFFFF	16.29	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#11223E

Deuteranopia (green-blind)

#0B1E3C

Tritanopia (blue-blind)

#00262B

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #121f3d;
/* rgb */ color: rgb(18, 31, 61);
/* oklch */ color: oklch(24.6% 0.060 264.7);

Tailwind

colors: {
  custom: {
    50: '#555a72',
    500: '#121f3d',
    950: '#000000',
  },
}

SCSS

$custom: #121f3d;
$custom-light: #555a72;
$custom-dark: #000000;

JSON

{
  "hex": "#121f3d",
  "rgb": {
    "r": 18,
    "g": 31,
    "b": 61
  },
  "hsl": {
    "h": 221.86,
    "s": 54.43,
    "l": 15.49
  },
  "oklch": {
    "l": 0.24557,
    "c": 0.06006,
    "h": 264.7
  },
  "luminance": 0.01445
}

Semantic roles & 50–950 ramp

primary

#121F3D

secondary

#766235

accent

#B14ADE

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#030308

muted

#78787B

Preview Lab

Preview with #121F3D

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

Preview Lab → · Contrast checker → · Palette generator →