#253FA1#253FA1

#253FA1 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.3% C 0.162 H 267.3°. Best body text is #FFFFFF at 9.11:1 contrast (WCAG AA passes).

Color values

HEX	#253FA1
RGB	rgb(37, 63, 161)
HSL	hsl(227, 63%, 39%)
HSV	hsv(227, 77%, 63%)
CMYK	cmyk(77%, 60.9%, 0%, 36.9%)
CIE-LAB	lab(30.69, 26.41, -55.85)
CIE-LCH	lch(30.69, 61.77, 295.31°)
OKLab	oklab(41.25% -0.0075 -0.1613)
OKLCH	oklch(41.25% 0.162 267.3)
XYZ	xyz(8.9712, 6.5205, 34.4971)
Luminance	0.0652 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253FA1 #A18725

analogous

#257DA1 #253FA1 #4925A1

triadic

#253FA1 #A1253F #3FA125

tetradic

#253FA1 #A1257D #A18725 #25A149

square

#253FA1 #A1257D #A18725 #25A149

split-complementary

#253FA1 #A14925 #7DA125

monochromatic

#0E183D #1A2C6F #253FA1 #3354D0 #657EDC

Accessibility & contrast

On white

9.11

#253FA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#253FA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253FA1

9.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253FA1	#FFFFFF	#000000	##FFFFFF
##253FA1	1.00	9.11	2.30	9.11
#FFFFFF	9.11	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA4

Deuteranopia (green-blind)

#00439F

Tritanopia (blue-blind)

#00586A

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #253fa1;
/* rgb */ color: rgb(37, 63, 161);
/* oklch */ color: oklch(41.3% 0.162 267.3);

Tailwind

colors: {
  custom: {
    50: '#7373be',
    500: '#253fa1',
    950: '#000000',
  },
}

SCSS

$custom: #253fa1;
$custom-light: #7373be;
$custom-dark: #000000;

JSON

{
  "hex": "#253fa1",
  "rgb": {
    "r": 37,
    "g": 63,
    "b": 161
  },
  "hsl": {
    "h": 227.419,
    "s": 62.626,
    "l": 38.824
  },
  "oklch": {
    "l": 0.41254,
    "c": 0.16152,
    "h": 267.3
  },
  "luminance": 0.06522
}

Semantic roles & 50–950 ramp

primary

#253FA1

secondary

#C1AD61

accent

#C342E6

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #253FA1

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

Preview Lab → · Contrast checker → · Palette generator →