#253F78#253F78

#253F78 is a dark, moderate blue. Relative luminance 0.053; OKLCH L 37.9% C 0.102 H 263.8°. Best body text is #FFFFFF at 10.19:1 contrast (WCAG AA passes).

Color values

HEX	#253F78
RGB	rgb(37, 63, 120)
HSL	hsl(221, 53%, 31%)
HSV	hsv(221, 69%, 47%)
CMYK	cmyk(69.2%, 47.5%, 0%, 52.9%)
CIE-LAB	lab(27.58, 10.44, -35.58)
CIE-LCH	lch(27.58, 37.08, 286.36°)
OKLab	oklab(37.93% -0.0111 -0.1018)
OKLCH	oklch(37.93% 0.102 263.8)
XYZ	xyz(5.9294, 5.3038, 18.4769)
Luminance	0.0530 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253F78 #785E25

analogous

#256878 #253F78 #342578

triadic

#253F78 #78253F #3F7825

tetradic

#253F78 #782568 #785E25 #257834

square

#253F78 #782568 #785E25 #257834

split-complementary

#253F78 #783425 #687825

monochromatic

#080E1A #172649 #253F78 #3358A7 #4F75C9

Accessibility & contrast

On white

10.19

#253F78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#253F78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253F78

10.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253F78	#FFFFFF	#000000	##FFFFFF
##253F78	1.00	10.19	2.06	10.19
#FFFFFF	10.19	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#23457A

Deuteranopia (green-blind)

#143E77

Tritanopia (blue-blind)

#004C55

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #253f78;
/* rgb */ color: rgb(37, 63, 120);
/* oklch */ color: oklch(37.9% 0.102 263.8);

Tailwind

colors: {
  custom: {
    50: '#6a739f',
    500: '#253f78',
    950: '#000000',
  },
}

SCSS

$custom: #253f78;
$custom-light: #6a739f;
$custom-dark: #000000;

JSON

{
  "hex": "#253f78",
  "rgb": {
    "r": 37,
    "g": 63,
    "b": 120
  },
  "hsl": {
    "h": 221.205,
    "s": 52.866,
    "l": 30.784
  },
  "oklch": {
    "l": 0.37926,
    "c": 0.10236,
    "h": 263.8
  },
  "luminance": 0.05304
}

Semantic roles & 50–950 ramp

primary

#253F78

secondary

#AA8E4E

accent

#AF4CDC

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07080E

muted

#7A7B7E

Preview Lab

Preview with #253F78

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

Preview Lab → · Contrast checker → · Palette generator →