#121D39#121D39

#121D39 is a very dark, muted blue. Relative luminance 0.013; OKLCH L 23.7% C 0.056 H 266.1°. Best body text is #FFFFFF at 16.66:1 contrast (WCAG AA passes).

Color values

HEX	#121D39
RGB	rgb(18, 29, 57)
HSL	hsl(223, 52%, 15%)
HSV	hsv(223, 68%, 22%)
CMYK	cmyk(68.4%, 49.1%, 0%, 77.6%)
CIE-LAB	lab(11.29, 5.71, -19.68)
CIE-LCH	lch(11.29, 20.49, 286.17°)
OKLab	oklab(23.73% -0.0038 -0.056)
OKLCH	oklch(23.73% 0.056 266.1)
XYZ	xyz(1.4271, 1.3026, 4.0463)
Luminance	0.0130 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121D39 #392E12

analogous

#123139 #121D39 #1B1239

triadic

#121D39 #39121D #1D3912

tetradic

#121D39 #391231 #392E12 #12391B

square

#121D39 #391231 #392E12 #12391B

split-complementary

#121D39 #391B12 #313912

monochromatic

#070C17 #070C17 #121D39 #213568 #2F4C96

Accessibility & contrast

On white

16.66

#121D39 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#121D39 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121D39

16.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121D39	#FFFFFF	#000000	##FFFFFF
##121D39	1.00	16.66	1.26	16.66
#FFFFFF	16.66	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#11203A

Deuteranopia (green-blind)

#0B1C38

Tritanopia (blue-blind)

#002328

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #121d39;
/* rgb */ color: rgb(18, 29, 57);
/* oklch */ color: oklch(23.7% 0.056 266.1);

Tailwind

colors: {
  custom: {
    50: '#54586f',
    500: '#121d39',
    950: '#000000',
  },
}

SCSS

$custom: #121d39;
$custom-light: #54586f;
$custom-dark: #000000;

JSON

{
  "hex": "#121d39",
  "rgb": {
    "r": 18,
    "g": 29,
    "b": 57
  },
  "hsl": {
    "h": 223.077,
    "s": 52,
    "l": 14.706
  },
  "oklch": {
    "l": 0.23726,
    "c": 0.05613,
    "h": 266.1
  },
  "luminance": 0.01303
}

Semantic roles & 50–950 ramp

primary

#121D39

secondary

#726135

accent

#B34CDB

background

#F5F5F6

surface

#E8E9EC

border

#C4C5C7

text

#030307

muted

#78787A

Preview Lab

Preview with #121D39

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

Preview Lab → · Contrast checker → · Palette generator →