#25178A#25178A

#25178A is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.4% C 0.175 H 275.8°. Best body text is #FFFFFF at 13.39:1 contrast (WCAG AA passes).

Color values

HEX	#25178A
RGB	rgb(37, 23, 138)
HSL	hsl(247, 71%, 32%)
HSV	hsv(247, 83%, 54%)
CMYK	cmyk(73.2%, 83.3%, 0%, 45.9%)
CIE-LAB	lab(19.39, 42.64, -60.27)
CIE-LCH	lch(19.39, 73.83, 305.28°)
OKLab	oklab(32.41% 0.0178 -0.1742)
OKLCH	oklch(32.41% 0.175 275.8)
XYZ	xyz(5.6553, 2.8405, 24.2901)
Luminance	0.0284 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#25178A #7C8A17

analogous

#17438A #25178A #5F178A

triadic

#25178A #8A2517 #178A25

tetradic

#25178A #8A1743 #7C8A17 #178A5F

square

#25178A #8A1743 #7C8A17 #178A5F

split-complementary

#25178A #8A5F17 #438A17

monochromatic

#090621 #170E56 #25178A #3320BE #503DDF

Accessibility & contrast

On white

13.39

#25178A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#25178A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #25178A

13.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##25178A	#FFFFFF	#000000	##FFFFFF
##25178A	1.00	13.39	1.57	13.39
#FFFFFF	13.39	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00348D

Deuteranopia (green-blind)

#002A88

Tritanopia (blue-blind)

#003B51

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #25178a;
/* rgb */ color: rgb(37, 23, 138);
/* oklch */ color: oklch(32.4% 0.175 275.8);

Tailwind

colors: {
  custom: {
    50: '#7158ad',
    500: '#25178a',
    950: '#000000',
  },
}

SCSS

$custom: #25178a;
$custom-light: #7158ad;
$custom-dark: #000000;

JSON

{
  "hex": "#25178a",
  "rgb": {
    "r": 37,
    "g": 23,
    "b": 138
  },
  "hsl": {
    "h": 247.304,
    "s": 71.429,
    "l": 31.569
  },
  "oklch": {
    "l": 0.32411,
    "c": 0.17513,
    "h": 275.8
  },
  "luminance": 0.02841
}

Semantic roles & 50–950 ramp

primary

#25178A

secondary

#AEBE3F

accent

#EE3AD8

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090310

muted

#7B787F

Preview Lab

Preview with #25178A

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

Preview Lab → · Contrast checker → · Palette generator →