#23179E#23179E

#23179E is a dark, vivid blue. Relative luminance 0.034; OKLCH L 34.7% C 0.199 H 272.7°. Best body text is #FFFFFF at 12.44:1 contrast (WCAG AA passes).

Color values

HEX	#23179E
RGB	rgb(35, 23, 158)
HSL	hsl(245, 75%, 35%)
HSV	hsv(245, 85%, 62%)
CMYK	cmyk(77.8%, 85.4%, 0%, 38%)
CIE-LAB	lab(21.72, 48.67, -68.80)
CIE-LCH	lch(21.72, 84.28, 305.28°)
OKLab	oklab(34.69% 0.0093 -0.199)
OKLCH	oklch(34.69% 0.199 272.7)
XYZ	xyz(7.1690, 3.4380, 32.6269)
Luminance	0.0344 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#23179E #929E17

analogous

#174F9E #23179E #66179E

triadic

#23179E #9E2317 #179E23

tetradic

#23179E #9E174F #929E17 #179E66

square

#23179E #9E174F #929E17 #179E66

split-complementary

#23179E #9E6617 #4F9E17

monochromatic

#0B0733 #170F69 #23179E #2F1FD3 #584BE5

Accessibility & contrast

On white

12.44

#23179E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#23179E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #23179E

12.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##23179E	#FFFFFF	#000000	##FFFFFF
##23179E	1.00	12.44	1.69	12.44
#FFFFFF	12.44	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003AA2

Deuteranopia (green-blind)

#002D9C

Tritanopia (blue-blind)

#00445D

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #23179e;
/* rgb */ color: rgb(35, 23, 158);
/* oklch */ color: oklch(34.7% 0.199 272.7);

Tailwind

colors: {
  custom: {
    50: '#755abc',
    500: '#23179e',
    950: '#000000',
  },
}

SCSS

$custom: #23179e;
$custom-light: #755abc;
$custom-dark: #000000;

JSON

{
  "hex": "#23179e",
  "rgb": {
    "r": 35,
    "g": 23,
    "b": 158
  },
  "hsl": {
    "h": 245.333,
    "s": 74.586,
    "l": 35.49
  },
  "oklch": {
    "l": 0.34688,
    "c": 0.19921,
    "h": 272.7
  },
  "luminance": 0.03439
}

Semantic roles & 50–950 ramp

primary

#23179E

secondary

#BBC64A

accent

#F137E1

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #23179E

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

Preview Lab → · Contrast checker → · Palette generator →