#12387F#12387F

#12387F is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.1% C 0.128 H 261.5°. Best body text is #FFFFFF at 11.07:1 contrast (WCAG AA passes).

Color values

HEX	#12387F
RGB	rgb(18, 56, 127)
HSL	hsl(219, 75%, 28%)
HSV	hsv(219, 86%, 50%)
CMYK	cmyk(85.8%, 55.9%, 0%, 50.2%)
CIE-LAB	lab(25.23, 15.62, -43.83)
CIE-LCH	lch(25.23, 46.53, 289.61°)
OKLab	oklab(36.08% -0.019 -0.1265)
OKLCH	oklch(36.08% 0.128 261.5)
XYZ	xyz(5.4930, 4.4886, 20.6514)
Luminance	0.0449 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12387F #7F5912

analogous

#126E7F #12387F #23127F

triadic

#12387F #7F1238 #387F12

tetradic

#12387F #7F126E #7F5912 #127F23

square

#12387F #7F126E #7F5912 #127F23

split-complementary

#12387F #7F2312 #6E7F12

monochromatic

#040C1B #0A2049 #12387F #1A50B5 #2B6AE1

Accessibility & contrast

On white

11.07

#12387F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#12387F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12387F

11.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12387F	#FFFFFF	#000000	##FFFFFF
##12387F	1.00	11.07	1.90	11.07
#FFFFFF	11.07	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004181

Deuteranopia (green-blind)

#00377E

Tritanopia (blue-blind)

#004A55

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #12387f;
/* rgb */ color: rgb(18, 56, 127);
/* oklch */ color: oklch(36.1% 0.128 261.5);

Tailwind

colors: {
  custom: {
    50: '#656ea5',
    500: '#12387f',
    950: '#000000',
  },
}

SCSS

$custom: #12387f;
$custom-light: #656ea5;
$custom-dark: #000000;

JSON

{
  "hex": "#12387f",
  "rgb": {
    "r": 18,
    "g": 56,
    "b": 127
  },
  "hsl": {
    "h": 219.083,
    "s": 75.172,
    "l": 28.431
  },
  "oklch": {
    "l": 0.36075,
    "c": 0.12792,
    "h": 261.5
  },
  "luminance": 0.04489
}

Semantic roles & 50–950 ramp

primary

#12387F

secondary

#B58938

accent

#B036F2

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #12387F

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

Preview Lab → · Contrast checker → · Palette generator →