#253F7B#253F7B

#253F7B is a dark, moderate blue. Relative luminance 0.054; OKLCH L 38.1% C 0.107 H 264.3°. Best body text is #FFFFFF at 10.12:1 contrast (WCAG AA passes).

Color values

HEX	#253F7B
RGB	rgb(37, 63, 123)
HSL	hsl(222, 54%, 31%)
HSV	hsv(222, 70%, 48%)
CMYK	cmyk(69.9%, 48.8%, 0%, 51.8%)
CIE-LAB	lab(27.79, 11.61, -37.15)
CIE-LCH	lch(27.79, 38.92, 287.36°)
OKLab	oklab(38.15% -0.0106 -0.1064)
OKLCH	oklch(38.15% 0.107 264.3)
XYZ	xyz(6.1144, 5.3778, 19.4508)
Luminance	0.0538 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253F7B #7B6125

analogous

#256A7B #253F7B #36257B

triadic

#253F7B #7B253F #3F7B25

tetradic

#253F7B #7B256A #7B6125 #257B36

square

#253F7B #7B256A #7B6125 #257B36

split-complementary

#253F7B #7B3625 #6A7B25

monochromatic

#090F1D #17274C #253F7B #3357AA #5075CA

Accessibility & contrast

On white

10.12

#253F7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#253F7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253F7B

10.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253F7B	#FFFFFF	#000000	##FFFFFF
##253F7B	1.00	10.12	2.08	10.12
#FFFFFF	10.12	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#20467D

Deuteranopia (green-blind)

#0E3E7A

Tritanopia (blue-blind)

#004D57

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #253f7b;
/* rgb */ color: rgb(37, 63, 123);
/* oklch */ color: oklch(38.1% 0.107 264.3);

Tailwind

colors: {
  custom: {
    50: '#6a73a2',
    500: '#253f7b',
    950: '#000000',
  },
}

SCSS

$custom: #253f7b;
$custom-light: #6a73a2;
$custom-dark: #000000;

JSON

{
  "hex": "#253f7b",
  "rgb": {
    "r": 37,
    "g": 63,
    "b": 123
  },
  "hsl": {
    "h": 221.86,
    "s": 53.75,
    "l": 31.373
  },
  "oklch": {
    "l": 0.38145,
    "c": 0.10689,
    "h": 264.3
  },
  "luminance": 0.05378
}

Semantic roles & 50–950 ramp

primary

#253F7B

secondary

#AD914F

accent

#B14BDD

background

#F6F6FA

surface

#ECECF3

border

#C7C7CD

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #253F7B

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

Preview Lab → · Contrast checker → · Palette generator →