#25309B#25309B

#25309B is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.9% C 0.172 H 270.7°. Best body text is #FFFFFF at 10.63:1 contrast (WCAG AA passes).

Color values

HEX	#25309B
RGB	rgb(37, 48, 155)
HSL	hsl(234, 61%, 38%)
HSV	hsv(234, 76%, 61%)
CMYK	cmyk(76.1%, 69%, 0%, 39.2%)
CIE-LAB	lab(26.37, 34.04, -59.28)
CIE-LCH	lch(26.37, 68.36, 299.87°)
OKLab	oklab(37.91% 0.0022 -0.1715)
OKLCH	oklch(37.91% 0.172 270.7)
XYZ	xyz(7.7343, 4.8730, 31.5369)
Luminance	0.0487 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#25309B #9B9025

analogous

#256B9B #25309B #55259B

triadic

#25309B #9B2530 #309B25

tetradic

#25309B #9B256B #9B9025 #259B55

square

#25309B #9B256B #9B9025 #259B55

split-complementary

#25309B #9B5525 #6B9B25

monochromatic

#0D1138 #19216A #25309B #313FCC #616CD9

Accessibility & contrast

On white

10.63

#25309B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#25309B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #25309B

10.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##25309B	#FFFFFF	#000000	##FFFFFF
##25309B	1.00	10.63	1.97	10.63
#FFFFFF	10.63	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00449E

Deuteranopia (green-blind)

#003999

Tritanopia (blue-blind)

#004D61

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #25309b;
/* rgb */ color: rgb(37, 48, 155);
/* oklch */ color: oklch(37.9% 0.172 270.7);

Tailwind

colors: {
  custom: {
    50: '#7368ba',
    500: '#25309b',
    950: '#000000',
  },
}

SCSS

$custom: #25309b;
$custom-light: #7368ba;
$custom-dark: #000000;

JSON

{
  "hex": "#25309b",
  "rgb": {
    "r": 37,
    "g": 48,
    "b": 155
  },
  "hsl": {
    "h": 234.407,
    "s": 61.458,
    "l": 37.647
  },
  "oklch": {
    "l": 0.37911,
    "c": 0.17152,
    "h": 270.7
  },
  "luminance": 0.04874
}

Semantic roles & 50–950 ramp

primary

#25309B

secondary

#BFB55D

accent

#D643E5

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#090612

muted

#7B7A81

Preview Lab

Preview with #25309B

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

Preview Lab → · Contrast checker → · Palette generator →