#12133B#12133B

#12133B is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 21.5% C 0.075 H 276.9°. Best body text is #FFFFFF at 17.77:1 contrast (WCAG AA passes).

Color values

HEX	#12133B
RGB	rgb(18, 19, 59)
HSL	hsl(239, 53%, 15%)
HSV	hsv(239, 69%, 23%)
CMYK	cmyk(69.5%, 67.8%, 0%, 76.9%)
CIE-LAB	lab(8.22, 14.31, -26.06)
CIE-LCH	lch(8.22, 29.73, 298.76°)
OKLab	oklab(21.45% 0.009 -0.0749)
OKLCH	oklch(21.45% 0.075 276.9)
XYZ	xyz(1.2715, 0.9100, 4.2455)
Luminance	0.0091 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12133B #3B3A12

analogous

#12273B #12133B #26123B

triadic

#12133B #3B1213 #133B12

tetradic

#12133B #3B1227 #3B3A12 #123B26

square

#12133B #3B1227 #3B3A12 #123B26

split-complementary

#12133B #3B2612 #273B12

monochromatic

#070817 #070817 #12133B #20226A #2F3199

Accessibility & contrast

On white

17.77

#12133B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#12133B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12133B

17.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12133B	#FFFFFF	#000000	##FFFFFF
##12133B	1.00	17.77	1.18	17.77
#FFFFFF	17.77	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001A3C

Deuteranopia (green-blind)

#00163A

Tritanopia (blue-blind)

#001D24

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #12133b;
/* rgb */ color: rgb(18, 19, 59);
/* oklch */ color: oklch(21.5% 0.075 276.9);

Tailwind

colors: {
  custom: {
    50: '#555071',
    500: '#12133b',
    950: '#000000',
  },
}

SCSS

$custom: #12133b;
$custom-light: #555071;
$custom-dark: #000000;

JSON

{
  "hex": "#12133b",
  "rgb": {
    "r": 18,
    "g": 19,
    "b": 59
  },
  "hsl": {
    "h": 238.537,
    "s": 53.247,
    "l": 15.098
  },
  "oklch": {
    "l": 0.21453,
    "c": 0.07544,
    "h": 276.9
  },
  "luminance": 0.0091
}

Semantic roles & 50–950 ramp

primary

#12133B

secondary

#747235

accent

#D94BDD

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#030208

muted

#78787B

Preview Lab

Preview with #12133B

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

Preview Lab → · Contrast checker → · Palette generator →