#121E3D#121E3D

#121E3D is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 24.3% C 0.062 H 266.0°. Best body text is #FFFFFF at 16.42:1 contrast (WCAG AA passes).

Color values

HEX	#121E3D
RGB	rgb(18, 30, 61)
HSL	hsl(223, 54%, 15%)
HSV	hsv(223, 70%, 24%)
CMYK	cmyk(70.5%, 50.8%, 0%, 76.1%)
CIE-LAB	lab(11.92, 6.62, -21.53)
CIE-LCH	lch(11.92, 22.52, 287.09°)
OKLab	oklab(24.3% -0.0042 -0.0614)
OKLCH	oklch(24.3% 0.062 266)
XYZ	xyz(1.5557, 1.3939, 4.6010)
Luminance	0.0139 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121E3D #3D3112

analogous

#12333D #121E3D #1B123D

triadic

#121E3D #3D121E #1E3D12

tetradic

#121E3D #3D1233 #3D3112 #123D1B

square

#121E3D #3D1233 #3D3112 #123D1B

split-complementary

#121E3D #3D1B12 #333D12

monochromatic

#070C18 #070C18 #121E3D #20356C #2E4C9C

Accessibility & contrast

On white

16.42

#121E3D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.28

#121E3D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121E3D

16.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121E3D	#FFFFFF	#000000	##FFFFFF
##121E3D	1.00	16.42	1.28	16.42
#FFFFFF	16.42	1.00	21.00	1.00
#000000	1.28	21.00	1.00	21.00
##FFFFFF	16.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#10213E

Deuteranopia (green-blind)

#091E3C

Tritanopia (blue-blind)

#00252A

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #121e3d;
/* rgb */ color: rgb(18, 30, 61);
/* oklch */ color: oklch(24.3% 0.062 266.0);

Tailwind

colors: {
  custom: {
    50: '#555973',
    500: '#121e3d',
    950: '#000000',
  },
}

SCSS

$custom: #121e3d;
$custom-light: #555973;
$custom-dark: #000000;

JSON

{
  "hex": "#121e3d",
  "rgb": {
    "r": 18,
    "g": 30,
    "b": 61
  },
  "hsl": {
    "h": 223.256,
    "s": 54.43,
    "l": 15.49
  },
  "oklch": {
    "l": 0.24297,
    "c": 0.06156,
    "h": 266
  },
  "luminance": 0.01394
}

Semantic roles & 50–950 ramp

primary

#121E3D

secondary

#766435

accent

#B54ADE

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#030308

muted

#78787B

Preview Lab

Preview with #121E3D

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

Preview Lab → · Contrast checker → · Palette generator →