#253F8F#253F8F

#253F8F is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.7% C 0.136 H 266.5°. Best body text is #FFFFFF at 9.61:1 contrast (WCAG AA passes).

Color values

HEX	#253F8F
RGB	rgb(37, 63, 143)
HSL	hsl(225, 59%, 35%)
HSV	hsv(225, 74%, 56%)
CMYK	cmyk(74.1%, 55.9%, 0%, 43.9%)
CIE-LAB	lab(29.24, 19.44, -47.24)
CIE-LCH	lch(29.24, 51.08, 292.37°)
OKLab	oklab(39.71% -0.0083 -0.136)
OKLCH	oklch(39.71% 0.136 266.5)
XYZ	xyz(7.4967, 5.9307, 26.7309)
Luminance	0.0593 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253F8F #8F7525

analogous

#25748F #253F8F #40258F

triadic

#253F8F #8F253F #3F8F25

tetradic

#253F8F #8F2574 #8F7525 #258F40

square

#253F8F #8F2574 #8F7525 #258F40

split-complementary

#253F8F #8F4025 #748F25

monochromatic

#0C142E #182A5E #253F8F #3254C0 #5A78D4

Accessibility & contrast

On white

9.61

#253F8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#253F8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253F8F

9.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253F8F	#FFFFFF	#000000	##FFFFFF
##253F8F	1.00	9.61	2.19	9.61
#FFFFFF	9.61	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A92

Deuteranopia (green-blind)

#00408D

Tritanopia (blue-blind)

#005260

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #253f8f;
/* rgb */ color: rgb(37, 63, 143);
/* oklch */ color: oklch(39.7% 0.136 266.5);

Tailwind

colors: {
  custom: {
    50: '#6f73b0',
    500: '#253f8f',
    950: '#000000',
  },
}

SCSS

$custom: #253f8f;
$custom-light: #6f73b0;
$custom-dark: #000000;

JSON

{
  "hex": "#253f8f",
  "rgb": {
    "r": 37,
    "g": 63,
    "b": 143
  },
  "hsl": {
    "h": 225.283,
    "s": 58.889,
    "l": 35.294
  },
  "oklch": {
    "l": 0.39711,
    "c": 0.1363,
    "h": 266.5
  },
  "luminance": 0.05931
}

Semantic roles & 50–950 ramp

primary

#253F8F

secondary

#B9A157

accent

#BC46E2

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080811

muted

#7B7B80

Preview Lab

Preview with #253F8F

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

Preview Lab → · Contrast checker → · Palette generator →