#25378B#25378B

#25378B is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.7% C 0.141 H 269.2°. Best body text is #FFFFFF at 10.51:1 contrast (WCAG AA passes).

Color values

HEX	#25378B
RGB	rgb(37, 55, 139)
HSL	hsl(229, 58%, 35%)
HSV	hsv(229, 73%, 55%)
CMYK	cmyk(73.4%, 60.4%, 0%, 45.5%)
CIE-LAB	lab(26.70, 23.38, -48.88)
CIE-LCH	lch(26.70, 54.19, 295.56°)
OKLab	oklab(37.71% -0.0019 -0.141)
OKLCH	oklch(37.71% 0.141 269.2)
XYZ	xyz(6.7877, 4.9891, 25.0264)
Luminance	0.0499 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#25378B #8B7925

analogous

#256A8B #25378B #46258B

triadic

#25378B #8B2537 #378B25

tetradic

#25378B #8B256A #8B7925 #258B46

square

#25378B #8B256A #8B7925 #258B46

split-complementary

#25378B #8B4625 #6A8B25

monochromatic

#0B112A #18245B #25378B #324ABB #586ED3

Accessibility & contrast

On white

10.51

#25378B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#25378B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #25378B

10.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##25378B	#FFFFFF	#000000	##FFFFFF
##25378B	1.00	10.51	2.00	10.51
#FFFFFF	10.51	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00448E

Deuteranopia (green-blind)

#003B89

Tritanopia (blue-blind)

#004C5B

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #25378b;
/* rgb */ color: rgb(37, 55, 139);
/* oklch */ color: oklch(37.7% 0.141 269.2);

Tailwind

colors: {
  custom: {
    50: '#6e6dae',
    500: '#25378b',
    950: '#000000',
  },
}

SCSS

$custom: #25378b;
$custom-light: #6e6dae;
$custom-dark: #000000;

JSON

{
  "hex": "#25378b",
  "rgb": {
    "r": 37,
    "g": 55,
    "b": 139
  },
  "hsl": {
    "h": 229.412,
    "s": 57.955,
    "l": 34.51
  },
  "oklch": {
    "l": 0.37711,
    "c": 0.14102,
    "h": 269.2
  },
  "luminance": 0.0499
}

Semantic roles & 50–950 ramp

primary

#25378B

secondary

#B7A655

accent

#C647E1

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #25378B

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

Preview Lab → · Contrast checker → · Palette generator →