#121C2B#121C2B

#121C2B is a very dark, muted blue. Relative luminance 0.011; OKLCH L 22.5% C 0.033 H 258.3°. Best body text is #FFFFFF at 17.12:1 contrast (WCAG AA passes).

Color values

HEX	#121C2B
RGB	rgb(18, 28, 43)
HSL	hsl(216, 41%, 12%)
HSV	hsv(216, 58%, 17%)
CMYK	cmyk(58.1%, 34.9%, 0%, 83.1%)
CIE-LAB	lab(10.06, 0.80, -11.50)
CIE-LCH	lch(10.06, 11.53, 273.99°)
OKLab	oklab(22.48% -0.0067 -0.0322)
OKLCH	oklch(22.48% 0.033 258.3)
XYZ	xyz(1.1006, 1.1335, 2.4458)
Luminance	0.0113 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121C2B #2B2112

analogous

#12292B #121C2B #15122B

triadic

#121C2B #2B121C #1C2B12

tetradic

#121C2B #2B1229 #2B2112 #122B15

square

#121C2B #2B1229 #2B2112 #122B15

split-complementary

#121C2B #2B1512 #292B12

monochromatic

#090E16 #090E16 #121C2B #243856 #365481

Accessibility & contrast

On white

17.12

#121C2B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#121C2B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121C2B

17.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121C2B	#FFFFFF	#000000	##FFFFFF
##121C2B	1.00	17.12	1.23	17.12
#FFFFFF	17.12	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#161D2C

Deuteranopia (green-blind)

#131B2B

Tritanopia (blue-blind)

#081F21

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #121c2b;
/* rgb */ color: rgb(18, 28, 43);
/* oklch */ color: oklch(22.5% 0.033 258.3);

Tailwind

colors: {
  custom: {
    50: '#515764',
    500: '#121c2b',
    950: '#000000',
  },
}

SCSS

$custom: #121c2b;
$custom-light: #515764;
$custom-dark: #000000;

JSON

{
  "hex": "#121c2b",
  "rgb": {
    "r": 18,
    "g": 28,
    "b": 43
  },
  "hsl": {
    "h": 216,
    "s": 40.984,
    "l": 11.961
  },
  "oklch": {
    "l": 0.22478,
    "c": 0.03287,
    "h": 258.3
  },
  "luminance": 0.01134
}

Semantic roles & 50–950 ramp

primary

#121C2B

secondary

#625136

accent

#A057D1

background

#F4F5F5

surface

#E7E9EA

border

#C3C5C6

text

#020305

muted

#787879

Preview Lab

Preview with #121C2B

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

Preview Lab → · Contrast checker → · Palette generator →