#23178A#23178A

#23178A is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.3% C 0.176 H 274.9°. Best body text is #FFFFFF at 13.45:1 contrast (WCAG AA passes).

Color values

HEX	#23178A
RGB	rgb(35, 23, 138)
HSL	hsl(246, 71%, 32%)
HSV	hsv(246, 83%, 54%)
CMYK	cmyk(74.6%, 83.3%, 0%, 45.9%)
CIE-LAB	lab(19.24, 42.48, -60.53)
CIE-LCH	lch(19.24, 73.95, 305.06°)
OKLab	oklab(32.27% 0.0149 -0.175)
OKLCH	oklch(32.27% 0.176 274.9)
XYZ	xyz(5.5855, 2.8045, 24.2868)
Luminance	0.0280 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#23178A #7E8A17

analogous

#17458A #23178A #5D178A

triadic

#23178A #8A2317 #178A23

tetradic

#23178A #8A1745 #7E8A17 #178A5D

square

#23178A #8A1745 #7E8A17 #178A5D

split-complementary

#23178A #8A5D17 #458A17

monochromatic

#080621 #160E56 #23178A #3020BE #4E3DDF

Accessibility & contrast

On white

13.45

#23178A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#23178A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #23178A

13.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##23178A	#FFFFFF	#000000	##FFFFFF
##23178A	1.00	13.45	1.56	13.45
#FFFFFF	13.45	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00348D

Deuteranopia (green-blind)

#002988

Tritanopia (blue-blind)

#003B51

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #23178a;
/* rgb */ color: rgb(35, 23, 138);
/* oklch */ color: oklch(32.3% 0.176 274.9);

Tailwind

colors: {
  custom: {
    50: '#7058ad',
    500: '#23178a',
    950: '#000000',
  },
}

SCSS

$custom: #23178a;
$custom-light: #7058ad;
$custom-dark: #000000;

JSON

{
  "hex": "#23178a",
  "rgb": {
    "r": 35,
    "g": 23,
    "b": 138
  },
  "hsl": {
    "h": 246.261,
    "s": 71.429,
    "l": 31.569
  },
  "oklch": {
    "l": 0.32269,
    "c": 0.17564,
    "h": 274.9
  },
  "luminance": 0.02805
}

Semantic roles & 50–950 ramp

primary

#23178A

secondary

#B0BE3F

accent

#EE3ADB

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090310

muted

#7B787F

Preview Lab

Preview with #23178A

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

Preview Lab → · Contrast checker → · Palette generator →