#17288D#17288D

#17288D is a dark, vivid blue. Relative luminance 0.036; OKLCH L 34.4% C 0.166 H 267.9°. Best body text is #FFFFFF at 12.18:1 contrast (WCAG AA passes).

Color values

HEX	#17288D
RGB	rgb(23, 40, 141)
HSL	hsl(231, 72%, 32%)
HSV	hsv(231, 84%, 55%)
CMYK	cmyk(83.7%, 71.6%, 0%, 44.7%)
CIE-LAB	lab(22.38, 32.74, -57.24)
CIE-LCH	lch(22.38, 65.94, 299.77°)
OKLab	oklab(34.41% -0.0061 -0.1659)
OKLCH	oklch(34.41% 0.166 267.9)
XYZ	xyz(5.9182, 3.6221, 25.5814)
Luminance	0.0362 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17288D #8D7C17

analogous

#17638D #17288D #41178D

triadic

#17288D #8D1728 #288D17

tetradic

#17288D #8D1763 #8D7C17 #178D41

square

#17288D #8D1763 #8D7C17 #178D41

split-complementary

#17288D #8D4117 #638D17

monochromatic

#060A24 #0E1958 #17288D #2037C2 #3F56E0

Accessibility & contrast

On white

12.18

#17288D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#17288D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17288D

12.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17288D	#FFFFFF	#000000	##FFFFFF
##17288D	1.00	12.18	1.72	12.18
#FFFFFF	12.18	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B90

Deuteranopia (green-blind)

#00308B

Tritanopia (blue-blind)

#004457

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #17288d;
/* rgb */ color: rgb(23, 40, 141);
/* oklch */ color: oklch(34.4% 0.166 267.9);

Tailwind

colors: {
  custom: {
    50: '#6c62af',
    500: '#17288d',
    950: '#000000',
  },
}

SCSS

$custom: #17288d;
$custom-light: #6c62af;
$custom-dark: #000000;

JSON

{
  "hex": "#17288d",
  "rgb": {
    "r": 23,
    "g": 40,
    "b": 141
  },
  "hsl": {
    "h": 231.356,
    "s": 71.951,
    "l": 32.157
  },
  "oklch": {
    "l": 0.34409,
    "c": 0.16597,
    "h": 267.9
  },
  "luminance": 0.03623
}

Semantic roles & 50–950 ramp

primary

#17288D

secondary

#C0AD40

accent

#D539EF

background

#F7F5FA

surface

#EDEAF5

border

#C8C6CF

text

#080511

muted

#7B7980

Preview Lab

Preview with #17288D

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

Preview Lab → · Contrast checker → · Palette generator →