#12337D#12337D

#12337D is a dark, vivid blue. Relative luminance 0.040; OKLCH L 34.8% C 0.132 H 263.1°. Best body text is #FFFFFF at 11.70:1 contrast (WCAG AA passes).

Color values

HEX	#12337D
RGB	rgb(18, 51, 125)
HSL	hsl(221, 75%, 28%)
HSV	hsv(221, 86%, 49%)
CMYK	cmyk(85.6%, 59.2%, 0%, 51%)
CIE-LAB	lab(23.59, 18.34, -45.23)
CIE-LCH	lch(23.59, 48.80, 292.08°)
OKLab	oklab(34.79% -0.0157 -0.1307)
OKLCH	oklch(34.79% 0.132 263.1)
XYZ	xyz(5.1336, 3.9763, 19.8950)
Luminance	0.0398 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12337D #7D5C12

analogous

#12687D #12337D #26127D

triadic

#12337D #7D1233 #337D12

tetradic

#12337D #7D1268 #7D5C12 #127D26

square

#12337D #7D1268 #7D5C12 #127D26

split-complementary

#12337D #7D2612 #687D12

monochromatic

#040B1B #0A1D48 #12337D #1A49B2 #2962E0

Accessibility & contrast

On white

11.70

#12337D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#12337D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12337D

11.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12337D	#FFFFFF	#000000	##FFFFFF
##12337D	1.00	11.70	1.80	11.70
#FFFFFF	11.70	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D80

Deuteranopia (green-blind)

#00337C

Tritanopia (blue-blind)

#004652

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #12337d;
/* rgb */ color: rgb(18, 51, 125);
/* oklch */ color: oklch(34.8% 0.132 263.1);

Tailwind

colors: {
  custom: {
    50: '#656aa3',
    500: '#12337d',
    950: '#000000',
  },
}

SCSS

$custom: #12337d;
$custom-light: #656aa3;
$custom-dark: #000000;

JSON

{
  "hex": "#12337d",
  "rgb": {
    "r": 18,
    "g": 51,
    "b": 125
  },
  "hsl": {
    "h": 221.495,
    "s": 74.825,
    "l": 28.039
  },
  "oklch": {
    "l": 0.34789,
    "c": 0.13163,
    "h": 263.1
  },
  "luminance": 0.03977
}

Semantic roles & 50–950 ramp

primary

#12337D

secondary

#B38D38

accent

#B836F1

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #12337D

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

Preview Lab → · Contrast checker → · Palette generator →