#12377C#12377C

#12377C is a dark, vivid blue. Relative luminance 0.043; OKLCH L 35.6% C 0.125 H 261.4°. Best body text is #FFFFFF at 11.27:1 contrast (WCAG AA passes).

Color values

HEX	#12377C
RGB	rgb(18, 55, 124)
HSL	hsl(219, 75%, 28%)
HSV	hsv(219, 85%, 49%)
CMYK	cmyk(85.5%, 55.6%, 0%, 51.4%)
CIE-LAB	lab(24.69, 15.07, -42.81)
CIE-LCH	lch(24.69, 45.39, 289.39°)
OKLab	oklab(35.59% -0.0186 -0.1235)
OKLCH	oklch(35.59% 0.125 261.4)
XYZ	xyz(5.2524, 4.3156, 19.6210)
Luminance	0.0432 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12377C #7C5712

analogous

#126C7C #12377C #22127C

triadic

#12377C #7C1237 #377C12

tetradic

#12377C #7C126C #7C5712 #127C22

square

#12377C #7C126C #7C5712 #127C22

split-complementary

#12377C #7C2212 #6C7C12

monochromatic

#040C1B #0A1F47 #12377C #1A4FB1 #2969E0

Accessibility & contrast

On white

11.27

#12377C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#12377C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12377C

11.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12377C	#FFFFFF	#000000	##FFFFFF
##12377C	1.00	11.27	1.86	11.27
#FFFFFF	11.27	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00407E

Deuteranopia (green-blind)

#00367B

Tritanopia (blue-blind)

#004854

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #12377c;
/* rgb */ color: rgb(18, 55, 124);
/* oklch */ color: oklch(35.6% 0.125 261.4);

Tailwind

colors: {
  custom: {
    50: '#646da2',
    500: '#12377c',
    950: '#000000',
  },
}

SCSS

$custom: #12377c;
$custom-light: #646da2;
$custom-dark: #000000;

JSON

{
  "hex": "#12377c",
  "rgb": {
    "r": 18,
    "g": 55,
    "b": 124
  },
  "hsl": {
    "h": 219.057,
    "s": 74.648,
    "l": 27.843
  },
  "oklch": {
    "l": 0.35592,
    "c": 0.12491,
    "h": 261.4
  },
  "luminance": 0.04316
}

Semantic roles & 50–950 ramp

primary

#12377C

secondary

#B28738

accent

#B037F1

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#06070F

muted

#7A7A7F

Preview Lab

Preview with #12377C

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

Preview Lab → · Contrast checker → · Palette generator →