#121C3C#121C3C

#121C3C is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 23.7% C 0.063 H 268.3°. Best body text is #FFFFFF at 16.71:1 contrast (WCAG AA passes).

Color values

HEX	#121C3C
RGB	rgb(18, 28, 60)
HSL	hsl(226, 54%, 15%)
HSV	hsv(226, 70%, 24%)
CMYK	cmyk(70%, 53.3%, 0%, 76.5%)
CIE-LAB	lab(11.17, 7.74, -22.01)
CIE-LCH	lch(11.17, 23.33, 289.37°)
OKLab	oklab(23.7% -0.0019 -0.0629)
OKLCH	oklch(23.7% 0.063 268.3)
XYZ	xyz(1.4800, 1.2852, 4.4442)
Luminance	0.0129 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121C3C #3C3212

analogous

#12313C #121C3C #1D123C

triadic

#121C3C #3C121C #1C3C12

tetradic

#121C3C #3C1231 #3C3212 #123C1D

square

#121C3C #3C1231 #3C3212 #123C1D

split-complementary

#121C3C #3C1D12 #313C12

monochromatic

#070B18 #070B18 #121C3C #20326B #2E489A

Accessibility & contrast

On white

16.71

#121C3C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#121C3C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121C3C

16.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121C3C	#FFFFFF	#000000	##FFFFFF
##121C3C	1.00	16.71	1.26	16.71
#FFFFFF	16.71	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D203D

Deuteranopia (green-blind)

#061C3B

Tritanopia (blue-blind)

#002329

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #121c3c;
/* rgb */ color: rgb(18, 28, 60);
/* oklch */ color: oklch(23.7% 0.063 268.3);

Tailwind

colors: {
  custom: {
    50: '#555772',
    500: '#121c3c',
    950: '#000000',
  },
}

SCSS

$custom: #121c3c;
$custom-light: #555772;
$custom-dark: #000000;

JSON

{
  "hex": "#121c3c",
  "rgb": {
    "r": 18,
    "g": 28,
    "b": 60
  },
  "hsl": {
    "h": 225.714,
    "s": 53.846,
    "l": 15.294
  },
  "oklch": {
    "l": 0.23702,
    "c": 0.06289,
    "h": 268.3
  },
  "luminance": 0.01285
}

Semantic roles & 50–950 ramp

primary

#121C3C

secondary

#756635

accent

#BA4BDD

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#030308

muted

#78787B

Preview Lab

Preview with #121C3C

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

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