#121C39#121C39

#121C39 is a very dark, muted blue. Relative luminance 0.013; OKLCH L 23.5% C 0.058 H 267.5°. Best body text is #FFFFFF at 16.79:1 contrast (WCAG AA passes).

Color values

HEX	#121C39
RGB	rgb(18, 28, 57)
HSL	hsl(225, 52%, 15%)
HSV	hsv(225, 68%, 22%)
CMYK	cmyk(68.4%, 50.9%, 0%, 77.6%)
CIE-LAB	lab(10.95, 6.48, -20.23)
CIE-LCH	lch(10.95, 21.24, 287.76°)
OKLab	oklab(23.46% -0.0025 -0.0576)
OKLCH	oklch(23.46% 0.058 267.5)
XYZ	xyz(1.4030, 1.2544, 4.0383)
Luminance	0.0126 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121C39 #392F12

analogous

#123039 #121C39 #1B1239

triadic

#121C39 #39121C #1C3912

tetradic

#121C39 #391230 #392F12 #12391B

square

#121C39 #391230 #392F12 #12391B

split-complementary

#121C39 #391B12 #303912

monochromatic

#070B17 #070B17 #121C39 #213368 #2F4A96

Accessibility & contrast

On white

16.79

#121C39 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#121C39 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121C39

16.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121C39	#FFFFFF	#000000	##FFFFFF
##121C39	1.00	16.79	1.25	16.79
#FFFFFF	16.79	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F1F3A

Deuteranopia (green-blind)

#0A1C38

Tritanopia (blue-blind)

#002227

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #121c39;
/* rgb */ color: rgb(18, 28, 57);
/* oklch */ color: oklch(23.5% 0.058 267.5);

Tailwind

colors: {
  custom: {
    50: '#54576f',
    500: '#121c39',
    950: '#000000',
  },
}

SCSS

$custom: #121c39;
$custom-light: #54576f;
$custom-dark: #000000;

JSON

{
  "hex": "#121c39",
  "rgb": {
    "r": 18,
    "g": 28,
    "b": 57
  },
  "hsl": {
    "h": 224.615,
    "s": 52,
    "l": 14.706
  },
  "oklch": {
    "l": 0.23464,
    "c": 0.05766,
    "h": 267.5
  },
  "luminance": 0.01255
}

Semantic roles & 50–950 ramp

primary

#121C39

secondary

#726235

accent

#B74CDB

background

#F5F5F6

surface

#E8E9EC

border

#C4C5C7

text

#030307

muted

#78787A

Preview Lab

Preview with #121C39

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

Preview Lab → · Contrast checker → · Palette generator →