#253F91#253F91

#253F91 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 39.9% C 0.139 H 266.7°. Best body text is #FFFFFF at 9.55:1 contrast (WCAG AA passes).

Color values

HEX	#253F91
RGB	rgb(37, 63, 145)
HSL	hsl(226, 59%, 36%)
HSV	hsv(226, 74%, 57%)
CMYK	cmyk(74.5%, 56.6%, 0%, 43.1%)
CIE-LAB	lab(29.39, 20.22, -48.21)
CIE-LCH	lch(29.39, 52.28, 292.75°)
OKLab	oklab(39.88% -0.0081 -0.1389)
OKLCH	oklch(39.88% 0.139 266.7)
XYZ	xyz(7.6495, 5.9919, 27.5360)
Luminance	0.0599 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253F91 #917725

analogous

#257591 #253F91 #412591

triadic

#253F91 #91253F #3F9125

tetradic

#253F91 #912575 #917725 #259141

square

#253F91 #912575 #917725 #259141

split-complementary

#253F91 #914125 #759125

monochromatic

#0C152F #192A60 #253F91 #3154C2 #5B79D5

Accessibility & contrast

On white

9.55

#253F91 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#253F91 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253F91

9.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253F91	#FFFFFF	#000000	##FFFFFF
##253F91	1.00	9.55	2.20	9.55
#FFFFFF	9.55	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A94

Deuteranopia (green-blind)

#00408F

Tritanopia (blue-blind)

#005361

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #253f91;
/* rgb */ color: rgb(37, 63, 145);
/* oklch */ color: oklch(39.9% 0.139 266.7);

Tailwind

colors: {
  custom: {
    50: '#6f73b2',
    500: '#253f91',
    950: '#000000',
  },
}

SCSS

$custom: #253f91;
$custom-light: #6f73b2;
$custom-dark: #000000;

JSON

{
  "hex": "#253f91",
  "rgb": {
    "r": 37,
    "g": 63,
    "b": 145
  },
  "hsl": {
    "h": 225.556,
    "s": 59.341,
    "l": 35.686
  },
  "oklch": {
    "l": 0.39877,
    "c": 0.13916,
    "h": 266.7
  },
  "luminance": 0.05993
}

Semantic roles & 50–950 ramp

primary

#253F91

secondary

#BAA258

accent

#BD45E3

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #253F91

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

Preview Lab → · Contrast checker → · Palette generator →