#253E7B#253E7B

#253E7B is a dark, moderate blue. Relative luminance 0.053; OKLCH L 37.9% C 0.108 H 264.9°. Best body text is #FFFFFF at 10.22:1 contrast (WCAG AA passes).

Color values

HEX	#253E7B
RGB	rgb(37, 62, 123)
HSL	hsl(223, 54%, 31%)
HSV	hsv(223, 70%, 48%)
CMYK	cmyk(69.9%, 49.6%, 0%, 51.8%)
CIE-LAB	lab(27.48, 12.31, -37.63)
CIE-LCH	lch(27.48, 39.59, 288.11°)
OKLab	oklab(37.92% -0.0096 -0.1078)
OKLCH	oklch(37.92% 0.108 264.9)
XYZ	xyz(6.0595, 5.2680, 19.4325)
Luminance	0.0527 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253E7B #7B6225

analogous

#25697B #253E7B #37257B

triadic

#253E7B #7B253E #3E7B25

tetradic

#253E7B #7B2569 #7B6225 #257B37

square

#253E7B #7B2569 #7B6225 #257B37

split-complementary

#253E7B #7B3725 #697B25

monochromatic

#090F1D #17264C #253E7B #3356AA #5074CA

Accessibility & contrast

On white

10.22

#253E7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#253E7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253E7B

10.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253E7B	#FFFFFF	#000000	##FFFFFF
##253E7B	1.00	10.22	2.05	10.22
#FFFFFF	10.22	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E457D

Deuteranopia (green-blind)

#0A3D7A

Tritanopia (blue-blind)

#004C56

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #253e7b;
/* rgb */ color: rgb(37, 62, 123);
/* oklch */ color: oklch(37.9% 0.108 264.9);

Tailwind

colors: {
  custom: {
    50: '#6a72a2',
    500: '#253e7b',
    950: '#000000',
  },
}

SCSS

$custom: #253e7b;
$custom-light: #6a72a2;
$custom-dark: #000000;

JSON

{
  "hex": "#253e7b",
  "rgb": {
    "r": 37,
    "g": 62,
    "b": 123
  },
  "hsl": {
    "h": 222.558,
    "s": 53.75,
    "l": 31.373
  },
  "oklch": {
    "l": 0.37916,
    "c": 0.10822,
    "h": 264.9
  },
  "luminance": 0.05269
}

Semantic roles & 50–950 ramp

primary

#253E7B

secondary

#AD924F

accent

#B34BDD

background

#F6F6FA

surface

#ECECF3

border

#C7C7CD

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #253E7B

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

Preview Lab → · Contrast checker → · Palette generator →