#121C3E#121C3E

#121C3E is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 23.9% C 0.066 H 268.7°. Best body text is #FFFFFF at 16.65:1 contrast (WCAG AA passes).

Color values

HEX	#121C3E
RGB	rgb(18, 28, 62)
HSL	hsl(226, 55%, 16%)
HSV	hsv(226, 71%, 24%)
CMYK	cmyk(71%, 54.8%, 0%, 75.7%)
CIE-LAB	lab(11.32, 8.58, -23.19)
CIE-LCH	lch(11.32, 24.73, 290.31°)
OKLab	oklab(23.87% -0.0015 -0.0663)
OKLCH	oklch(23.87% 0.066 268.7)
XYZ	xyz(1.5339, 1.3068, 4.7279)
Luminance	0.0131 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121C3E #3E3412

analogous

#12323E #121C3E #1E123E

triadic

#121C3E #3E121C #1C3E12

tetradic

#121C3E #3E1232 #3E3412 #123E1E

square

#121C3E #3E1232 #3E3412 #123E1E

split-complementary

#121C3E #3E1E12 #323E12

monochromatic

#070B18 #070B18 #121C3E #20316D #2E479D

Accessibility & contrast

On white

16.65

#121C3E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#121C3E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121C3E

16.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121C3E	#FFFFFF	#000000	##FFFFFF
##121C3E	1.00	16.65	1.26	16.65
#FFFFFF	16.65	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B203F

Deuteranopia (green-blind)

#041C3D

Tritanopia (blue-blind)

#00242A

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #121c3e;
/* rgb */ color: rgb(18, 28, 62);
/* oklch */ color: oklch(23.9% 0.066 268.7);

Tailwind

colors: {
  custom: {
    50: '#555773',
    500: '#121c3e',
    950: '#000000',
  },
}

SCSS

$custom: #121c3e;
$custom-light: #555773;
$custom-dark: #000000;

JSON

{
  "hex": "#121c3e",
  "rgb": {
    "r": 18,
    "g": 28,
    "b": 62
  },
  "hsl": {
    "h": 226.364,
    "s": 55,
    "l": 15.686
  },
  "oklch": {
    "l": 0.23866,
    "c": 0.06633,
    "h": 268.7
  },
  "luminance": 0.01307
}

Semantic roles & 50–950 ramp

primary

#121C3E

secondary

#776835

accent

#BD49DE

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030308

muted

#78787B

Preview Lab

Preview with #121C3E

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

Preview Lab → · Contrast checker → · Palette generator →