#121F39#121F39

#121F39 is a very dark, muted blue. Relative luminance 0.014; OKLCH L 24.3% C 0.053 H 263.0°. Best body text is #FFFFFF at 16.40:1 contrast (WCAG AA passes).

Color values

HEX	#121F39
RGB	rgb(18, 31, 57)
HSL	hsl(220, 52%, 15%)
HSV	hsv(220, 68%, 22%)
CMYK	cmyk(68.4%, 45.6%, 0%, 77.6%)
CIE-LAB	lab(11.98, 4.17, -18.59)
CIE-LCH	lch(11.98, 19.05, 282.65°)
OKLab	oklab(24.26% -0.0065 -0.0528)
OKLCH	oklch(24.26% 0.053 263)
XYZ	xyz(1.4777, 1.4039, 4.0632)
Luminance	0.0140 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121F39 #392C12

analogous

#123339 #121F39 #191239

triadic

#121F39 #39121F #1F3912

tetradic

#121F39 #391233 #392C12 #123919

square

#121F39 #391233 #392C12 #123919

split-complementary

#121F39 #391912 #333912

monochromatic

#070D17 #070D17 #121F39 #213868 #2F5296

Accessibility & contrast

On white

16.40

#121F39 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.28

#121F39 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121F39

16.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121F39	#FFFFFF	#000000	##FFFFFF
##121F39	1.00	16.40	1.28	16.40
#FFFFFF	16.40	1.00	21.00	1.00
#000000	1.28	21.00	1.00	21.00
##FFFFFF	16.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#14213A

Deuteranopia (green-blind)

#0F1E38

Tritanopia (blue-blind)

#002529

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #121f39;
/* rgb */ color: rgb(18, 31, 57);
/* oklch */ color: oklch(24.3% 0.053 263.0);

Tailwind

colors: {
  custom: {
    50: '#545a6f',
    500: '#121f39',
    950: '#000000',
  },
}

SCSS

$custom: #121f39;
$custom-light: #545a6f;
$custom-dark: #000000;

JSON

{
  "hex": "#121f39",
  "rgb": {
    "r": 18,
    "g": 31,
    "b": 57
  },
  "hsl": {
    "h": 220,
    "s": 52,
    "l": 14.706
  },
  "oklch": {
    "l": 0.24258,
    "c": 0.05317,
    "h": 263
  },
  "luminance": 0.01404
}

Semantic roles & 50–950 ramp

primary

#121F39

secondary

#725E35

accent

#AC4CDB

background

#F4F5F6

surface

#E8E9EC

border

#C4C5C7

text

#030307

muted

#78787A

Preview Lab

Preview with #121F39

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

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