#253E9B#253E9B

#253E9B is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.5% C 0.155 H 267.4°. Best body text is #FFFFFF at 9.37:1 contrast (WCAG AA passes).

Color values

HEX	#253E9B
RGB	rgb(37, 62, 155)
HSL	hsl(227, 61%, 38%)
HSV	hsv(227, 76%, 61%)
CMYK	cmyk(76.1%, 60%, 0%, 39.2%)
CIE-LAB	lab(29.92, 24.78, -53.46)
CIE-LCH	lch(29.92, 58.92, 294.86°)
OKLab	oklab(40.53% -0.0069 -0.1544)
OKLCH	oklch(40.53% 0.155 267.4)
XYZ	xyz(8.3999, 6.2042, 31.7588)
Luminance	0.0621 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253E9B #9B8225

analogous

#25799B #253E9B #47259B

triadic

#253E9B #9B253E #3E9B25

tetradic

#253E9B #9B2579 #9B8225 #259B47

square

#253E9B #9B2579 #9B8225 #259B47

split-complementary

#253E9B #9B4725 #799B25

monochromatic

#0D1638 #192A6A #253E9B #3152CC #617BD9

Accessibility & contrast

On white

9.37

#253E9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#253E9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253E9B

9.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253E9B	#FFFFFF	#000000	##FFFFFF
##253E9B	1.00	9.37	2.24	9.37
#FFFFFF	9.37	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004C9E

Deuteranopia (green-blind)

#004199

Tritanopia (blue-blind)

#005566

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #253e9b;
/* rgb */ color: rgb(37, 62, 155);
/* oklch */ color: oklch(40.5% 0.155 267.4);

Tailwind

colors: {
  custom: {
    50: '#7272b9',
    500: '#253e9b',
    950: '#000000',
  },
}

SCSS

$custom: #253e9b;
$custom-light: #7272b9;
$custom-dark: #000000;

JSON

{
  "hex": "#253e9b",
  "rgb": {
    "r": 37,
    "g": 62,
    "b": 155
  },
  "hsl": {
    "h": 227.288,
    "s": 61.458,
    "l": 37.647
  },
  "oklch": {
    "l": 0.40526,
    "c": 0.15452,
    "h": 267.4
  },
  "luminance": 0.06205
}

Semantic roles & 50–950 ramp

primary

#253E9B

secondary

#BFAA5D

accent

#C243E5

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #253E9B

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

Preview Lab → · Contrast checker → · Palette generator →