#15287C#15287C

#15287C is a dark, vivid blue. Relative luminance 0.031; OKLCH L 32.5% C 0.144 H 267.3°. Best body text is #FFFFFF at 12.91:1 contrast (WCAG AA passes).

Color values

HEX	#15287C
RGB	rgb(21, 40, 124)
HSL	hsl(229, 71%, 28%)
HSV	hsv(229, 83%, 49%)
CMYK	cmyk(83.1%, 67.7%, 0%, 51.4%)
CIE-LAB	lab(20.56, 25.98, -49.54)
CIE-LCH	lch(20.56, 55.94, 297.68°)
OKLab	oklab(32.54% -0.0067 -0.1434)
OKLCH	oklch(32.54% 0.144 267.3)
XYZ	xyz(4.7049, 3.1317, 19.4214)
Luminance	0.0313 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#15287C #7C6915

analogous

#155B7C #15287C #35157C

triadic

#15287C #7C1528 #287C15

tetradic

#15287C #7C155B #7C6915 #157C35

square

#15287C #7C155B #7C6915 #157C35

split-complementary

#15287C #7C3515 #5B7C15

monochromatic

#04081A #0C1748 #15287C #1E39B0 #304FDC

Accessibility & contrast

On white

12.91

#15287C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#15287C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #15287C

12.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##15287C	#FFFFFF	#000000	##FFFFFF
##15287C	1.00	12.91	1.63	12.91
#FFFFFF	12.91	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00367F

Deuteranopia (green-blind)

#002D7A

Tritanopia (blue-blind)

#003E4E

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #15287c;
/* rgb */ color: rgb(21, 40, 124);
/* oklch */ color: oklch(32.5% 0.144 267.3);

Tailwind

colors: {
  custom: {
    50: '#6661a3',
    500: '#15287c',
    950: '#000000',
  },
}

SCSS

$custom: #15287c;
$custom-light: #6661a3;
$custom-dark: #000000;

JSON

{
  "hex": "#15287c",
  "rgb": {
    "r": 21,
    "g": 40,
    "b": 124
  },
  "hsl": {
    "h": 228.932,
    "s": 71.034,
    "l": 28.431
  },
  "oklch": {
    "l": 0.32538,
    "c": 0.1436,
    "h": 267.3
  },
  "luminance": 0.03132
}

Semantic roles & 50–950 ramp

primary

#15287C

secondary

#B19C3C

accent

#CD3AEE

background

#F6F5FA

surface

#EBEAF4

border

#C6C6CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #15287C

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

Preview Lab → · Contrast checker → · Palette generator →