#12243B#12243B

#12243B is a dark, muted cyan. Relative luminance 0.017; OKLCH L 25.8% C 0.050 H 255.3°. Best body text is #FFFFFF at 15.66:1 contrast (WCAG AA passes).

Color values

HEX	#12243B
RGB	rgb(18, 36, 59)
HSL	hsl(214, 53%, 15%)
HSV	hsv(214, 69%, 23%)
CMYK	cmyk(69.5%, 39%, 0%, 76.9%)
CIE-LAB	lab(13.86, 1.26, -17.03)
CIE-LCH	lch(13.86, 17.08, 274.22°)
OKLab	oklab(25.76% -0.0127 -0.0482)
OKLCH	oklch(25.76% 0.05 255.3)
XYZ	xyz(1.6695, 1.7060, 4.3781)
Luminance	0.0171 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12243B #3B2912

analogous

#12383B #12243B #15123B

triadic

#12243B #3B1224 #243B12

tetradic

#12243B #3B1238 #3B2912 #123B15

square

#12243B #3B1238 #3B2912 #123B15

split-complementary

#12243B #3B1512 #383B12

monochromatic

#070E17 #070E17 #12243B #20416A #2F5D99

Accessibility & contrast

On white

15.66

#12243B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#12243B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12243B

15.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12243B	#FFFFFF	#000000	##FFFFFF
##12243B	1.00	15.66	1.34	15.66
#FFFFFF	15.66	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A253C

Deuteranopia (green-blind)

#15223B

Tritanopia (blue-blind)

#00292C

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #12243b;
/* rgb */ color: rgb(18, 36, 59);
/* oklch */ color: oklch(25.8% 0.050 255.3);

Tailwind

colors: {
  custom: {
    50: '#545e71',
    500: '#12243b',
    950: '#000000',
  },
}

SCSS

$custom: #12243b;
$custom-light: #545e71;
$custom-dark: #000000;

JSON

{
  "hex": "#12243b",
  "rgb": {
    "r": 18,
    "g": 36,
    "b": 59
  },
  "hsl": {
    "h": 213.659,
    "s": 53.247,
    "l": 15.098
  },
  "oklch": {
    "l": 0.2576,
    "c": 0.0498,
    "h": 255.3
  },
  "luminance": 0.01706
}

Semantic roles & 50–950 ramp

primary

#12243B

secondary

#745835

accent

#9D4BDD

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#030407

muted

#78797A

Preview Lab

Preview with #12243B

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

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