#25178B#25178B

#25178B is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.5% C 0.176 H 275.7°. Best body text is #FFFFFF at 13.34:1 contrast (WCAG AA passes).

Color values

HEX	#25178B
RGB	rgb(37, 23, 139)
HSL	hsl(247, 72%, 32%)
HSV	hsv(247, 83%, 55%)
CMYK	cmyk(73.4%, 83.5%, 0%, 45.5%)
CIE-LAB	lab(19.51, 42.95, -60.70)
CIE-LCH	lch(19.51, 74.36, 305.28°)
OKLab	oklab(32.53% 0.0175 -0.1755)
OKLCH	oklch(32.53% 0.176 275.7)
XYZ	xyz(5.7280, 2.8696, 24.6731)
Luminance	0.0287 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#25178B #7D8B17

analogous

#17438B #25178B #5F178B

triadic

#25178B #8B2517 #178B25

tetradic

#25178B #8B1743 #7D8B17 #178B5F

square

#25178B #8B1743 #7D8B17 #178B5F

split-complementary

#25178B #8B5F17 #438B17

monochromatic

#090622 #170E56 #25178B #3320C0 #513DDF

Accessibility & contrast

On white

13.34

#25178B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#25178B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #25178B

13.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##25178B	#FFFFFF	#000000	##FFFFFF
##25178B	1.00	13.34	1.57	13.34
#FFFFFF	13.34	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.34	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: #25178b;
/* rgb */ color: rgb(37, 23, 139);
/* oklch */ color: oklch(32.5% 0.176 275.7);

Tailwind

colors: {
  custom: {
    50: '#7158ae',
    500: '#25178b',
    950: '#000000',
  },
}

SCSS

$custom: #25178b;
$custom-light: #7158ae;
$custom-dark: #000000;

JSON

{
  "hex": "#25178b",
  "rgb": {
    "r": 37,
    "g": 23,
    "b": 139
  },
  "hsl": {
    "h": 247.241,
    "s": 71.605,
    "l": 31.765
  },
  "oklch": {
    "l": 0.3253,
    "c": 0.17634,
    "h": 275.7
  },
  "luminance": 0.0287
}

Semantic roles & 50–950 ramp

primary

#25178B

secondary

#AFBF3F

accent

#EE39D9

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#090310

muted

#7B787F

Preview Lab

Preview with #25178B

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

Preview Lab → · Contrast checker → · Palette generator →