#253FAF#253FAF

#253FAF is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.5% C 0.180 H 267.6°. Best body text is #FFFFFF at 8.72:1 contrast (WCAG AA passes).

Color values

HEX	#253FAF
RGB	rgb(37, 63, 175)
HSL	hsl(229, 65%, 42%)
HSV	hsv(229, 79%, 69%)
CMYK	cmyk(78.9%, 64%, 0%, 31.4%)
CIE-LAB	lab(31.90, 31.71, -62.26)
CIE-LCH	lch(31.90, 69.87, 296.99°)
OKLab	oklab(42.53% -0.0077 -0.1801)
OKLCH	oklch(42.53% 0.18 267.6)
XYZ	xyz(10.2756, 7.0423, 41.3669)
Luminance	0.0704 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253FAF #AF9525

analogous

#2584AF #253FAF #5025AF

triadic

#253FAF #AF253F #3FAF25

tetradic

#253FAF #AF2584 #AF9525 #25AF50

square

#253FAF #AF2584 #AF9525 #25AF50

split-complementary

#253FAF #AF5025 #84AF25

monochromatic

#101B4A #1A2D7C #253FAF #3C59D6 #6E84E0

Accessibility & contrast

On white

8.72

#253FAF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#253FAF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253FAF

8.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253FAF	#FFFFFF	#000000	##FFFFFF
##253FAF	1.00	8.72	2.41	8.72
#FFFFFF	8.72	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B3

Deuteranopia (green-blind)

#0045AD

Tritanopia (blue-blind)

#005C71

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #253faf;
/* rgb */ color: rgb(37, 63, 175);
/* oklch */ color: oklch(42.5% 0.180 267.6);

Tailwind

colors: {
  custom: {
    50: '#7774c8',
    500: '#253faf',
    950: '#000000',
  },
}

SCSS

$custom: #253faf;
$custom-light: #7774c8;
$custom-dark: #000000;

JSON

{
  "hex": "#253faf",
  "rgb": {
    "r": 37,
    "g": 63,
    "b": 175
  },
  "hsl": {
    "h": 228.696,
    "s": 65.094,
    "l": 41.569
  },
  "oklch": {
    "l": 0.42528,
    "c": 0.18031,
    "h": 267.6
  },
  "luminance": 0.07043
}

Semantic roles & 50–950 ramp

primary

#253FAF

secondary

#C7B569

accent

#C840E8

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #253FAF

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

Preview Lab → · Contrast checker → · Palette generator →