#12387D#12387D

#12387D is a dark, vivid blue. Relative luminance 0.044; OKLCH L 35.9% C 0.125 H 261.2°. Best body text is #FFFFFF at 11.13:1 contrast (WCAG AA passes).

Color values

HEX	#12387D
RGB	rgb(18, 56, 125)
HSL	hsl(219, 75%, 28%)
HSV	hsv(219, 86%, 49%)
CMYK	cmyk(85.6%, 55.2%, 0%, 51%)
CIE-LAB	lab(25.07, 14.78, -42.83)
CIE-LCH	lch(25.07, 45.31, 289.03°)
OKLab	oklab(35.9% -0.0192 -0.1235)
OKLCH	oklch(35.9% 0.125 261.2)
XYZ	xyz(5.3640, 4.4370, 19.9718)
Luminance	0.0444 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12387D #7D5712

analogous

#126D7D #12387D #22127D

triadic

#12387D #7D1238 #387D12

tetradic

#12387D #7D126D #7D5712 #127D22

square

#12387D #7D126D #7D5712 #127D22

split-complementary

#12387D #7D2212 #6D7D12

monochromatic

#040C1B #0A2048 #12387D #1A50B2 #296AE0

Accessibility & contrast

On white

11.13

#12387D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#12387D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12387D

11.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12387D	#FFFFFF	#000000	##FFFFFF
##12387D	1.00	11.13	1.89	11.13
#FFFFFF	11.13	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#02417F

Deuteranopia (green-blind)

#00377C

Tritanopia (blue-blind)

#004954

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #12387d;
/* rgb */ color: rgb(18, 56, 125);
/* oklch */ color: oklch(35.9% 0.125 261.2);

Tailwind

colors: {
  custom: {
    50: '#656ea3',
    500: '#12387d',
    950: '#000000',
  },
}

SCSS

$custom: #12387d;
$custom-light: #656ea3;
$custom-dark: #000000;

JSON

{
  "hex": "#12387d",
  "rgb": {
    "r": 18,
    "g": 56,
    "b": 125
  },
  "hsl": {
    "h": 218.692,
    "s": 74.825,
    "l": 28.039
  },
  "oklch": {
    "l": 0.35904,
    "c": 0.12503,
    "h": 261.2
  },
  "luminance": 0.04438
}

Semantic roles & 50–950 ramp

primary

#12387D

secondary

#B38738

accent

#AF36F1

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#06070F

muted

#7A7A7F

Preview Lab

Preview with #12387D

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

Preview Lab → · Contrast checker → · Palette generator →