#12237E#12237E

#12237E is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.7% C 0.153 H 267.4°. Best body text is #FFFFFF at 13.40:1 contrast (WCAG AA passes).

Color values

HEX	#12237E
RGB	rgb(18, 35, 126)
HSL	hsl(231, 75%, 28%)
HSV	hsv(231, 86%, 49%)
CMYK	cmyk(85.7%, 72.2%, 0%, 50.6%)
CIE-LAB	lab(19.38, 29.92, -52.77)
CIE-LCH	lch(19.38, 60.66, 299.56°)
OKLab	oklab(31.7% -0.007 -0.1529)
OKLCH	oklch(31.7% 0.153 267.4)
XYZ	xyz(4.6151, 2.8365, 20.0389)
Luminance	0.0284 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12237E #7E6D12

analogous

#12597E #12237E #37127E

triadic

#12237E #7E1223 #237E12

tetradic

#12237E #7E1259 #7E6D12 #127E37

square

#12237E #7E1259 #7E6D12 #127E37

split-complementary

#12237E #7E3712 #597E12

monochromatic

#04071B #0A1448 #12237E #1A32B4 #2A47E1

Accessibility & contrast

On white

13.40

#12237E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#12237E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12237E

13.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12237E	#FFFFFF	#000000	##FFFFFF
##12237E	1.00	13.40	1.57	13.40
#FFFFFF	13.40	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003481

Deuteranopia (green-blind)

#002A7C

Tritanopia (blue-blind)

#003D4D

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #12237e;
/* rgb */ color: rgb(18, 35, 126);
/* oklch */ color: oklch(31.7% 0.153 267.4);

Tailwind

colors: {
  custom: {
    50: '#675ea4',
    500: '#12237e',
    950: '#000000',
  },
}

SCSS

$custom: #12237e;
$custom-light: #675ea4;
$custom-dark: #000000;

JSON

{
  "hex": "#12237e",
  "rgb": {
    "r": 18,
    "g": 35,
    "b": 126
  },
  "hsl": {
    "h": 230.556,
    "s": 75,
    "l": 28.235
  },
  "oklch": {
    "l": 0.317,
    "c": 0.15309,
    "h": 267.4
  },
  "luminance": 0.02837
}

Semantic roles & 50–950 ramp

primary

#12237E

secondary

#B4A038

accent

#D436F2

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #12237E

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

Preview Lab → · Contrast checker → · Palette generator →