#253DAF#253DAF

#253DAF is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.2% C 0.183 H 267.9°. Best body text is #FFFFFF at 8.88:1 contrast (WCAG AA passes).

Color values

HEX	#253DAF
RGB	rgb(37, 61, 175)
HSL	hsl(230, 65%, 42%)
HSV	hsv(230, 79%, 69%)
CMYK	cmyk(78.9%, 65.1%, 0%, 31.4%)
CIE-LAB	lab(31.40, 33.02, -63.08)
CIE-LCH	lch(31.40, 71.20, 297.63°)
OKLab	oklab(42.16% -0.0065 -0.1825)
OKLCH	oklch(42.16% 0.183 267.9)
XYZ	xyz(10.1669, 6.8248, 41.3306)
Luminance	0.0683 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253DAF #AF9725

analogous

#2582AF #253DAF #5225AF

triadic

#253DAF #AF253D #3DAF25

tetradic

#253DAF #AF2582 #AF9725 #25AF52

square

#253DAF #AF2582 #AF9725 #25AF52

split-complementary

#253DAF #AF5225 #82AF25

monochromatic

#101A4A #1A2B7C #253DAF #3C56D6 #6E82E0

Accessibility & contrast

On white

8.88

#253DAF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#253DAF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253DAF

8.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253DAF	#FFFFFF	#000000	##FFFFFF
##253DAF	1.00	8.88	2.37	8.88
#FFFFFF	8.88	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B3

Deuteranopia (green-blind)

#0043AD

Tritanopia (blue-blind)

#005B70

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #253daf;
/* rgb */ color: rgb(37, 61, 175);
/* oklch */ color: oklch(42.2% 0.183 267.9);

Tailwind

colors: {
  custom: {
    50: '#7772c8',
    500: '#253daf',
    950: '#000000',
  },
}

SCSS

$custom: #253daf;
$custom-light: #7772c8;
$custom-dark: #000000;

JSON

{
  "hex": "#253daf",
  "rgb": {
    "r": 37,
    "g": 61,
    "b": 175
  },
  "hsl": {
    "h": 229.565,
    "s": 65.094,
    "l": 41.569
  },
  "oklch": {
    "l": 0.42161,
    "c": 0.18267,
    "h": 267.9
  },
  "luminance": 0.06826
}

Semantic roles & 50–950 ramp

primary

#253DAF

secondary

#C7B769

accent

#CB40E8

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #253DAF

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

Preview Lab → · Contrast checker → · Palette generator →