#253B9B#253B9B

#253B9B is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.9% C 0.158 H 268.3°. Best body text is #FFFFFF at 9.64:1 contrast (WCAG AA passes).

Color values

HEX	#253B9B
RGB	rgb(37, 59, 155)
HSL	hsl(229, 61%, 38%)
HSV	hsv(229, 76%, 61%)
CMYK	cmyk(76.1%, 61.9%, 0%, 39.2%)
CIE-LAB	lab(29.13, 26.80, -54.76)
CIE-LCH	lch(29.13, 60.97, 296.08°)
OKLab	oklab(39.93% -0.0048 -0.1582)
OKLCH	oklch(39.93% 0.158 268.3)
XYZ	xyz(8.2413, 5.8869, 31.7059)
Luminance	0.0589 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253B9B #9B8525

analogous

#25769B #253B9B #4A259B

triadic

#253B9B #9B253B #3B9B25

tetradic

#253B9B #9B2576 #9B8525 #259B4A

square

#253B9B #9B2576 #9B8525 #259B4A

split-complementary

#253B9B #9B4A25 #769B25

monochromatic

#0D1538 #19286A #253B9B #314ECC #6178D9

Accessibility & contrast

On white

9.64

#253B9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#253B9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253B9B

9.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253B9B	#FFFFFF	#000000	##FFFFFF
##253B9B	1.00	9.64	2.18	9.64
#FFFFFF	9.64	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A9E

Deuteranopia (green-blind)

#003F99

Tritanopia (blue-blind)

#005465

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #253b9b;
/* rgb */ color: rgb(37, 59, 155);
/* oklch */ color: oklch(39.9% 0.158 268.3);

Tailwind

colors: {
  custom: {
    50: '#7270b9',
    500: '#253b9b',
    950: '#000000',
  },
}

SCSS

$custom: #253b9b;
$custom-light: #7270b9;
$custom-dark: #000000;

JSON

{
  "hex": "#253b9b",
  "rgb": {
    "r": 37,
    "g": 59,
    "b": 155
  },
  "hsl": {
    "h": 228.814,
    "s": 61.458,
    "l": 37.647
  },
  "oklch": {
    "l": 0.39933,
    "c": 0.15828,
    "h": 268.3
  },
  "luminance": 0.05888
}

Semantic roles & 50–950 ramp

primary

#253B9B

secondary

#BFAC5D

accent

#C643E5

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #253B9B

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

Preview Lab → · Contrast checker → · Palette generator →