#12233B#12233B

#12233B is a dark, muted blue. Relative luminance 0.016; OKLCH L 25.5% C 0.051 H 257.2°. Best body text is #FFFFFF at 15.80:1 contrast (WCAG AA passes).

Color values

HEX	#12233B
RGB	rgb(18, 35, 59)
HSL	hsl(215, 53%, 15%)
HSV	hsv(215, 69%, 23%)
CMYK	cmyk(69.5%, 40.7%, 0%, 76.9%)
CIE-LAB	lab(13.51, 2.00, -17.59)
CIE-LCH	lch(13.51, 17.70, 276.48°)
OKLab	oklab(25.49% -0.0113 -0.0498)
OKLCH	oklch(25.49% 0.051 257.2)
XYZ	xyz(1.6396, 1.6463, 4.3682)
Luminance	0.0165 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12233B #3B2A12

analogous

#12373B #12233B #15123B

triadic

#12233B #3B1223 #233B12

tetradic

#12233B #3B1237 #3B2A12 #123B15

square

#12233B #3B1237 #3B2A12 #123B15

split-complementary

#12233B #3B1512 #373B12

monochromatic

#070E17 #070E17 #12233B #203F6A #2F5B99

Accessibility & contrast

On white

15.80

#12233B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#12233B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12233B

15.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12233B	#FFFFFF	#000000	##FFFFFF
##12233B	1.00	15.80	1.33	15.80
#FFFFFF	15.80	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#19253C

Deuteranopia (green-blind)

#13213B

Tritanopia (blue-blind)

#00282C

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #12233b;
/* rgb */ color: rgb(18, 35, 59);
/* oklch */ color: oklch(25.5% 0.051 257.2);

Tailwind

colors: {
  custom: {
    50: '#545d71',
    500: '#12233b',
    950: '#000000',
  },
}

SCSS

$custom: #12233b;
$custom-light: #545d71;
$custom-dark: #000000;

JSON

{
  "hex": "#12233b",
  "rgb": {
    "r": 18,
    "g": 35,
    "b": 59
  },
  "hsl": {
    "h": 215.122,
    "s": 53.247,
    "l": 15.098
  },
  "oklch": {
    "l": 0.25485,
    "c": 0.05106,
    "h": 257.2
  },
  "luminance": 0.01646
}

Semantic roles & 50–950 ramp

primary

#12233B

secondary

#745A35

accent

#A04BDD

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#030407

muted

#78797A

Preview Lab

Preview with #12233B

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

Preview Lab → · Contrast checker → · Palette generator →