#23178B#23178B

#23178B is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.4% C 0.177 H 274.7°. Best body text is #FFFFFF at 13.40:1 contrast (WCAG AA passes).

Color values

HEX	#23178B
RGB	rgb(35, 23, 139)
HSL	hsl(246, 72%, 32%)
HSV	hsv(246, 83%, 55%)
CMYK	cmyk(74.8%, 83.5%, 0%, 45.5%)
CIE-LAB	lab(19.36, 42.80, -60.95)
CIE-LCH	lch(19.36, 74.48, 305.07°)
OKLab	oklab(32.39% 0.0146 -0.1762)
OKLCH	oklch(32.39% 0.177 274.7)
XYZ	xyz(5.6582, 2.8336, 24.6698)
Luminance	0.0283 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#23178B #7F8B17

analogous

#17458B #23178B #5D178B

triadic

#23178B #8B2317 #178B23

tetradic

#23178B #8B1745 #7F8B17 #178B5D

square

#23178B #8B1745 #7F8B17 #178B5D

split-complementary

#23178B #8B5D17 #458B17

monochromatic

#090622 #160E56 #23178B #3020C0 #4E3DDF

Accessibility & contrast

On white

13.40

#23178B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#23178B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #23178B

13.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##23178B	#FFFFFF	#000000	##FFFFFF
##23178B	1.00	13.40	1.57	13.40
#FFFFFF	13.40	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00348E

Deuteranopia (green-blind)

#002A89

Tritanopia (blue-blind)

#003C52

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #23178b;
/* rgb */ color: rgb(35, 23, 139);
/* oklch */ color: oklch(32.4% 0.177 274.7);

Tailwind

colors: {
  custom: {
    50: '#7158ae',
    500: '#23178b',
    950: '#000000',
  },
}

SCSS

$custom: #23178b;
$custom-light: #7158ae;
$custom-dark: #000000;

JSON

{
  "hex": "#23178b",
  "rgb": {
    "r": 35,
    "g": 23,
    "b": 139
  },
  "hsl": {
    "h": 246.207,
    "s": 71.605,
    "l": 31.765
  },
  "oklch": {
    "l": 0.32388,
    "c": 0.17686,
    "h": 274.7
  },
  "luminance": 0.02834
}

Semantic roles & 50–950 ramp

primary

#23178B

secondary

#B1BF3F

accent

#EE39DC

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#090310

muted

#7B787F

Preview Lab

Preview with #23178B

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

Preview Lab → · Contrast checker → · Palette generator →