#253F9F#253F9F

#253F9F is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.1% C 0.159 H 267.3°. Best body text is #FFFFFF at 9.17:1 contrast (WCAG AA passes).

Color values

HEX	#253F9F
RGB	rgb(37, 63, 159)
HSL	hsl(227, 62%, 38%)
HSV	hsv(227, 77%, 62%)
CMYK	cmyk(76.7%, 60.4%, 0%, 37.6%)
CIE-LAB	lab(30.52, 25.64, -54.91)
CIE-LCH	lch(30.52, 60.60, 295.03°)
OKLab	oklab(41.08% -0.0076 -0.1586)
OKLCH	oklch(41.08% 0.159 267.3)
XYZ	xyz(8.7963, 6.4506, 33.5757)
Luminance	0.0645 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253F9F #9F8525

analogous

#257C9F #253F9F #48259F

triadic

#253F9F #9F253F #3F9F25

tetradic

#253F9F #9F257C #9F8525 #259F48

square

#253F9F #9F257C #9F8525 #259F48

split-complementary

#253F9F #9F4825 #7C9F25

monochromatic

#0E183C #192B6D #253F9F #3253CF #647DDB

Accessibility & contrast

On white

9.17

#253F9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#253F9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253F9F

9.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253F9F	#FFFFFF	#000000	##FFFFFF
##253F9F	1.00	9.17	2.29	9.17
#FFFFFF	9.17	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA2

Deuteranopia (green-blind)

#00429D

Tritanopia (blue-blind)

#005768

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #253f9f;
/* rgb */ color: rgb(37, 63, 159);
/* oklch */ color: oklch(41.1% 0.159 267.3);

Tailwind

colors: {
  custom: {
    50: '#7373bc',
    500: '#253f9f',
    950: '#000000',
  },
}

SCSS

$custom: #253f9f;
$custom-light: #7373bc;
$custom-dark: #000000;

JSON

{
  "hex": "#253f9f",
  "rgb": {
    "r": 37,
    "g": 63,
    "b": 159
  },
  "hsl": {
    "h": 227.213,
    "s": 62.245,
    "l": 38.431
  },
  "oklch": {
    "l": 0.41077,
    "c": 0.15877,
    "h": 267.3
  },
  "luminance": 0.06452
}

Semantic roles & 50–950 ramp

primary

#253F9F

secondary

#C0AC5F

accent

#C342E5

background

#F7F7FB

surface

#EEEDF6

border

#C9C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #253F9F

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

Preview Lab → · Contrast checker → · Palette generator →