#121F3E#121F3E

#121F3E is a very dark, moderate blue. Relative luminance 0.015; OKLCH L 24.6% C 0.062 H 265.1°. Best body text is #FFFFFF at 16.26:1 contrast (WCAG AA passes).

Color values

HEX	#121F3E
RGB	rgb(18, 31, 62)
HSL	hsl(222, 55%, 16%)
HSV	hsv(222, 71%, 24%)
CMYK	cmyk(71%, 50%, 0%, 75.7%)
CIE-LAB	lab(12.33, 6.27, -21.58)
CIE-LCH	lch(12.33, 22.47, 286.21°)
OKLab	oklab(24.64% -0.0053 -0.0615)
OKLCH	oklch(24.64% 0.062 265.1)
XYZ	xyz(1.6086, 1.4562, 4.7528)
Luminance	0.0146 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121F3E #3E3112

analogous

#12353E #121F3E #1B123E

triadic

#121F3E #3E121F #1F3E12

tetradic

#121F3E #3E1235 #3E3112 #123E1B

square

#121F3E #3E1235 #3E3112 #123E1B

split-complementary

#121F3E #3E1B12 #353E12

monochromatic

#070C18 #070C18 #121F3E #20376D #2E4E9D

Accessibility & contrast

On white

16.26

#121F3E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#121F3E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121F3E

16.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121F3E	#FFFFFF	#000000	##FFFFFF
##121F3E	1.00	16.26	1.29	16.26
#FFFFFF	16.26	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#11223F

Deuteranopia (green-blind)

#0A1E3D

Tritanopia (blue-blind)

#00262B

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #121f3e;
/* rgb */ color: rgb(18, 31, 62);
/* oklch */ color: oklch(24.6% 0.062 265.1);

Tailwind

colors: {
  custom: {
    50: '#555a73',
    500: '#121f3e',
    950: '#000000',
  },
}

SCSS

$custom: #121f3e;
$custom-light: #555a73;
$custom-dark: #000000;

JSON

{
  "hex": "#121f3e",
  "rgb": {
    "r": 18,
    "g": 31,
    "b": 62
  },
  "hsl": {
    "h": 222.273,
    "s": 55,
    "l": 15.686
  },
  "oklch": {
    "l": 0.24635,
    "c": 0.06177,
    "h": 265.1
  },
  "luminance": 0.01456
}

Semantic roles & 50–950 ramp

primary

#121F3E

secondary

#776335

accent

#B249DE

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030308

muted

#78787B

Preview Lab

Preview with #121F3E

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

Preview Lab → · Contrast checker → · Palette generator →