#12387E#12387E

#12387E is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.0% C 0.126 H 261.3°. Best body text is #FFFFFF at 11.10:1 contrast (WCAG AA passes).

Color values

HEX	#12387E
RGB	rgb(18, 56, 126)
HSL	hsl(219, 75%, 28%)
HSV	hsv(219, 86%, 49%)
CMYK	cmyk(85.7%, 55.6%, 0%, 50.6%)
CIE-LAB	lab(25.15, 15.20, -43.33)
CIE-LCH	lch(25.15, 45.92, 289.33°)
OKLab	oklab(35.99% -0.0191 -0.125)
OKLCH	oklch(35.99% 0.126 261.3)
XYZ	xyz(5.4282, 4.4626, 20.3099)
Luminance	0.0446 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12387E #7E5812

analogous

#126E7E #12387E #22127E

triadic

#12387E #7E1238 #387E12

tetradic

#12387E #7E126E #7E5812 #127E22

square

#12387E #7E126E #7E5812 #127E22

split-complementary

#12387E #7E2212 #6E7E12

monochromatic

#040C1B #0A2048 #12387E #1A50B4 #2A6AE1

Accessibility & contrast

On white

11.10

#12387E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#12387E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12387E

11.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12387E	#FFFFFF	#000000	##FFFFFF
##12387E	1.00	11.10	1.89	11.10
#FFFFFF	11.10	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004180

Deuteranopia (green-blind)

#00377D

Tritanopia (blue-blind)

#004955

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #12387e;
/* rgb */ color: rgb(18, 56, 126);
/* oklch */ color: oklch(36.0% 0.126 261.3);

Tailwind

colors: {
  custom: {
    50: '#656ea4',
    500: '#12387e',
    950: '#000000',
  },
}

SCSS

$custom: #12387e;
$custom-light: #656ea4;
$custom-dark: #000000;

JSON

{
  "hex": "#12387e",
  "rgb": {
    "r": 18,
    "g": 56,
    "b": 126
  },
  "hsl": {
    "h": 218.889,
    "s": 75,
    "l": 28.235
  },
  "oklch": {
    "l": 0.35989,
    "c": 0.12648,
    "h": 261.3
  },
  "luminance": 0.04463
}

Semantic roles & 50–950 ramp

primary

#12387E

secondary

#B48838

accent

#B036F2

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #12387E

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

Preview Lab → · Contrast checker → · Palette generator →