#253B91#253B91

#253B91 is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.0% C 0.144 H 268.0°. Best body text is #FFFFFF at 9.94:1 contrast (WCAG AA passes).

Color values

HEX	#253B91
RGB	rgb(37, 59, 145)
HSL	hsl(228, 59%, 36%)
HSV	hsv(228, 74%, 57%)
CMYK	cmyk(74.5%, 59.3%, 0%, 43.1%)
CIE-LAB	lab(28.29, 22.96, -50.01)
CIE-LCH	lch(28.29, 55.03, 294.66°)
OKLab	oklab(39.05% -0.0049 -0.1443)
OKLCH	oklch(39.05% 0.144 268)
XYZ	xyz(7.4360, 5.5648, 27.4648)
Luminance	0.0557 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253B91 #917B25

analogous

#257191 #253B91 #452591

triadic

#253B91 #91253B #3B9125

tetradic

#253B91 #912571 #917B25 #259145

square

#253B91 #912571 #917B25 #259145

split-complementary

#253B91 #914525 #719125

monochromatic

#0C132F #192760 #253B91 #314FC2 #5B74D5

Accessibility & contrast

On white

9.94

#253B91 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#253B91 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253B91

9.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253B91	#FFFFFF	#000000	##FFFFFF
##253B91	1.00	9.94	2.11	9.94
#FFFFFF	9.94	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004894

Deuteranopia (green-blind)

#003E8F

Tritanopia (blue-blind)

#005060

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #253b91;
/* rgb */ color: rgb(37, 59, 145);
/* oklch */ color: oklch(39.0% 0.144 268.0);

Tailwind

colors: {
  custom: {
    50: '#7070b2',
    500: '#253b91',
    950: '#000000',
  },
}

SCSS

$custom: #253b91;
$custom-light: #7070b2;
$custom-dark: #000000;

JSON

{
  "hex": "#253b91",
  "rgb": {
    "r": 37,
    "g": 59,
    "b": 145
  },
  "hsl": {
    "h": 227.778,
    "s": 59.341,
    "l": 35.686
  },
  "oklch": {
    "l": 0.39048,
    "c": 0.14434,
    "h": 268
  },
  "luminance": 0.05566
}

Semantic roles & 50–950 ramp

primary

#253B91

secondary

#BAA658

accent

#C245E3

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #253B91

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

Preview Lab → · Contrast checker → · Palette generator →