#12153B#12153B

#12153B is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 21.9% C 0.072 H 275.3°. Best body text is #FFFFFF at 17.56:1 contrast (WCAG AA passes).

Color values

HEX	#12153B
RGB	rgb(18, 21, 59)
HSL	hsl(236, 53%, 15%)
HSV	hsv(236, 69%, 23%)
CMYK	cmyk(69.5%, 64.4%, 0%, 76.9%)
CIE-LAB	lab(8.83, 12.76, -25.07)
CIE-LCH	lch(8.83, 28.13, 296.98°)
OKLab	oklab(21.91% 0.0067 -0.072)
OKLCH	oklch(21.91% 0.072 275.3)
XYZ	xyz(1.3068, 0.9806, 4.2572)
Luminance	0.0098 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12153B #3B3812

analogous

#12293B #12153B #24123B

triadic

#12153B #3B1215 #153B12

tetradic

#12153B #3B1229 #3B3812 #123B24

square

#12153B #3B1229 #3B3812 #123B24

split-complementary

#12153B #3B2412 #293B12

monochromatic

#070817 #070817 #12153B #20266A #2F3699

Accessibility & contrast

On white

17.56

#12153B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#12153B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12153B

17.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12153B	#FFFFFF	#000000	##FFFFFF
##12153B	1.00	17.56	1.20	17.56
#FFFFFF	17.56	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001B3C

Deuteranopia (green-blind)

#00173A

Tritanopia (blue-blind)

#001E25

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #12153b;
/* rgb */ color: rgb(18, 21, 59);
/* oklch */ color: oklch(21.9% 0.072 275.3);

Tailwind

colors: {
  custom: {
    50: '#555271',
    500: '#12153b',
    950: '#000000',
  },
}

SCSS

$custom: #12153b;
$custom-light: #555271;
$custom-dark: #000000;

JSON

{
  "hex": "#12153b",
  "rgb": {
    "r": 18,
    "g": 21,
    "b": 59
  },
  "hsl": {
    "h": 235.61,
    "s": 53.247,
    "l": 15.098
  },
  "oklch": {
    "l": 0.21907,
    "c": 0.07227,
    "h": 275.3
  },
  "luminance": 0.00981
}

Semantic roles & 50–950 ramp

primary

#12153B

secondary

#746F35

accent

#D24BDD

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#030208

muted

#78787B

Preview Lab

Preview with #12153B

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

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