#253B9F#253B9F

#253B9F is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.3% C 0.164 H 268.3°. Best body text is #FFFFFF at 9.52:1 contrast (WCAG AA passes).

Color values

HEX	#253B9F
RGB	rgb(37, 59, 159)
HSL	hsl(229, 62%, 38%)
HSV	hsv(229, 77%, 62%)
CMYK	cmyk(76.7%, 62.9%, 0%, 37.6%)
CIE-LAB	lab(29.47, 28.32, -56.62)
CIE-LCH	lch(29.47, 63.31, 296.57°)
OKLab	oklab(40.3% -0.0048 -0.1637)
OKLCH	oklch(40.3% 0.164 268.3)
XYZ	xyz(8.5828, 6.0235, 33.5045)
Luminance	0.0602 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253B9F #9F8925

analogous

#25789F #253B9F #4C259F

triadic

#253B9F #9F253B #3B9F25

tetradic

#253B9F #9F2578 #9F8925 #259F4C

square

#253B9F #9F2578 #9F8925 #259F4C

split-complementary

#253B9F #9F4C25 #789F25

monochromatic

#0E163C #19296D #253B9F #324ECF #6479DB

Accessibility & contrast

On white

9.52

#253B9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#253B9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253B9F

9.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253B9F	#FFFFFF	#000000	##FFFFFF
##253B9F	1.00	9.52	2.20	9.52
#FFFFFF	9.52	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA2

Deuteranopia (green-blind)

#00409D

Tritanopia (blue-blind)

#005567

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #253b9f;
/* rgb */ color: rgb(37, 59, 159);
/* oklch */ color: oklch(40.3% 0.164 268.3);

Tailwind

colors: {
  custom: {
    50: '#7370bc',
    500: '#253b9f',
    950: '#000000',
  },
}

SCSS

$custom: #253b9f;
$custom-light: #7370bc;
$custom-dark: #000000;

JSON

{
  "hex": "#253b9f",
  "rgb": {
    "r": 37,
    "g": 59,
    "b": 159
  },
  "hsl": {
    "h": 229.18,
    "s": 62.245,
    "l": 38.431
  },
  "oklch": {
    "l": 0.40297,
    "c": 0.16374,
    "h": 268.3
  },
  "luminance": 0.06024
}

Semantic roles & 50–950 ramp

primary

#253B9F

secondary

#C0AF5F

accent

#C842E5

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #253B9F

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

Preview Lab → · Contrast checker → · Palette generator →