#12397F#12397F

#12397F is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.3% C 0.127 H 261.0°. Best body text is #FFFFFF at 10.95:1 contrast (WCAG AA passes).

Color values

HEX	#12397F
RGB	rgb(18, 57, 127)
HSL	hsl(219, 75%, 28%)
HSV	hsv(219, 86%, 50%)
CMYK	cmyk(85.8%, 55.1%, 0%, 50.2%)
CIE-LAB	lab(25.52, 14.91, -43.35)
CIE-LCH	lch(25.52, 45.84, 288.98°)
OKLab	oklab(36.3% -0.0197 -0.125)
OKLCH	oklch(36.3% 0.127 261)
XYZ	xyz(5.5420, 4.5865, 20.6677)
Luminance	0.0459 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12397F #7F5812

analogous

#126F7F #12397F #21127F

triadic

#12397F #7F1239 #397F12

tetradic

#12397F #7F126F #7F5812 #127F21

square

#12397F #7F126F #7F5812 #127F21

split-complementary

#12397F #7F2112 #6F7F12

monochromatic

#040C1B #0A2149 #12397F #1A51B5 #2B6CE1

Accessibility & contrast

On white

10.95

#12397F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#12397F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12397F

10.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12397F	#FFFFFF	#000000	##FFFFFF
##12397F	1.00	10.95	1.92	10.95
#FFFFFF	10.95	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#024281

Deuteranopia (green-blind)

#00387E

Tritanopia (blue-blind)

#004A56

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #12397f;
/* rgb */ color: rgb(18, 57, 127);
/* oklch */ color: oklch(36.3% 0.127 261.0);

Tailwind

colors: {
  custom: {
    50: '#656ea5',
    500: '#12397f',
    950: '#000000',
  },
}

SCSS

$custom: #12397f;
$custom-light: #656ea5;
$custom-dark: #000000;

JSON

{
  "hex": "#12397f",
  "rgb": {
    "r": 18,
    "g": 57,
    "b": 127
  },
  "hsl": {
    "h": 218.532,
    "s": 75.172,
    "l": 28.431
  },
  "oklch": {
    "l": 0.36301,
    "c": 0.12659,
    "h": 261
  },
  "luminance": 0.04587
}

Semantic roles & 50–950 ramp

primary

#12397F

secondary

#B58838

accent

#AF36F2

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #12397F

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

Preview Lab → · Contrast checker → · Palette generator →