#25289B#25289B

#25289B is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.6% C 0.180 H 272.0°. Best body text is #FFFFFF at 11.32:1 contrast (WCAG AA passes).

Color values

HEX	#25289B
RGB	rgb(37, 40, 155)
HSL	hsl(238, 61%, 38%)
HSV	hsv(238, 76%, 61%)
CMYK	cmyk(76.1%, 74.2%, 0%, 39.2%)
CIE-LAB	lab(24.57, 39.00, -62.25)
CIE-LCH	lch(24.57, 73.45, 302.07°)
OKLab	oklab(36.61% 0.0064 -0.1802)
OKLCH	oklch(36.61% 0.18 272)
XYZ	xyz(7.4361, 4.2767, 31.4376)
Luminance	0.0428 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#25289B #9B9825

analogous

#25639B #25289B #5D259B

triadic

#25289B #9B2528 #289B25

tetradic

#25289B #9B2563 #9B9825 #259B5D

square

#25289B #9B2563 #9B9825 #259B5D

split-complementary

#25289B #9B5D25 #639B25

monochromatic

#0D0E38 #191B6A #25289B #3135CC #6164D9

Accessibility & contrast

On white

11.32

#25289B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#25289B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #25289B

11.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##25289B	#FFFFFF	#000000	##FFFFFF
##25289B	1.00	11.32	1.86	11.32
#FFFFFF	11.32	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00409E

Deuteranopia (green-blind)

#003599

Tritanopia (blue-blind)

#00495F

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #25289b;
/* rgb */ color: rgb(37, 40, 155);
/* oklch */ color: oklch(36.6% 0.180 272.0);

Tailwind

colors: {
  custom: {
    50: '#7463ba',
    500: '#25289b',
    950: '#000000',
  },
}

SCSS

$custom: #25289b;
$custom-light: #7463ba;
$custom-dark: #000000;

JSON

{
  "hex": "#25289b",
  "rgb": {
    "r": 37,
    "g": 40,
    "b": 155
  },
  "hsl": {
    "h": 238.475,
    "s": 61.458,
    "l": 37.647
  },
  "oklch": {
    "l": 0.36613,
    "c": 0.18027,
    "h": 272
  },
  "luminance": 0.04277
}

Semantic roles & 50–950 ramp

primary

#25289B

secondary

#BFBC5D

accent

#E043E5

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0512

muted

#7C7A81

Preview Lab

Preview with #25289B

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

Preview Lab → · Contrast checker → · Palette generator →