#253B66#253B66

#253B66 is a dark, moderate blue. Relative luminance 0.045; OKLCH L 35.7% C 0.080 H 262.6°. Best body text is #FFFFFF at 11.07:1 contrast (WCAG AA passes).

Color values

HEX	#253B66
RGB	rgb(37, 59, 102)
HSL	hsl(220, 47%, 27%)
HSV	hsv(220, 64%, 40%)
CMYK	cmyk(63.7%, 42.2%, 0%, 60%)
CIE-LAB	lab(25.20, 6.26, -27.91)
CIE-LCH	lch(25.20, 28.60, 282.64°)
OKLab	oklab(35.72% -0.0103 -0.0793)
OKLCH	oklch(35.72% 0.08 262.6)
XYZ	xyz(4.7244, 4.4801, 13.1836)
Luminance	0.0448 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253B66 #665025

analogous

#255C66 #253B66 #2F2566

triadic

#253B66 #66253B #3B6625

tetradic

#253B66 #66255C #665025 #25662F

square

#253B66 #66255C #665025 #25662F

split-complementary

#253B66 #662F25 #5C6625

monochromatic

#080D16 #152139 #253B66 #355593 #4970BD

Accessibility & contrast

On white

11.07

#253B66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#253B66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253B66

11.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253B66	#FFFFFF	#000000	##FFFFFF
##253B66	1.00	11.07	1.90	11.07
#FFFFFF	11.07	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#283F68

Deuteranopia (green-blind)

#203965

Tritanopia (blue-blind)

#00454B

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #253b66;
/* rgb */ color: rgb(37, 59, 102);
/* oklch */ color: oklch(35.7% 0.080 262.6);

Tailwind

colors: {
  custom: {
    50: '#667092',
    500: '#253b66',
    950: '#000000',
  },
}

SCSS

$custom: #253b66;
$custom-light: #667092;
$custom-dark: #000000;

JSON

{
  "hex": "#253b66",
  "rgb": {
    "r": 37,
    "g": 59,
    "b": 102
  },
  "hsl": {
    "h": 219.692,
    "s": 46.763,
    "l": 27.255
  },
  "oklch": {
    "l": 0.35717,
    "c": 0.07997,
    "h": 262.6
  },
  "luminance": 0.04481
}

Semantic roles & 50–950 ramp

primary

#253B66

secondary

#99804E

accent

#A951D6

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #253B66

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

Preview Lab → · Contrast checker → · Palette generator →