#253F9A#253F9A

#253F9A is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.6% C 0.152 H 267.1°. Best body text is #FFFFFF at 9.31:1 contrast (WCAG AA passes).

Color values

HEX	#253F9A
RGB	rgb(37, 63, 154)
HSL	hsl(227, 61%, 37%)
HSV	hsv(227, 76%, 60%)
CMYK	cmyk(76%, 59.1%, 0%, 39.6%)
CIE-LAB	lab(30.11, 23.71, -52.55)
CIE-LCH	lch(30.11, 57.65, 294.29°)
OKLab	oklab(40.64% -0.0077 -0.1517)
OKLCH	oklch(40.64% 0.152 267.1)
XYZ	xyz(8.3712, 6.2805, 31.3367)
Luminance	0.0628 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253F9A #9A8025

analogous

#25799A #253F9A #46259A

triadic

#253F9A #9A253F #3F9A25

tetradic

#253F9A #9A2579 #9A8025 #259A46

square

#253F9A #9A2579 #9A8025 #259A46

split-complementary

#253F9A #9A4625 #799A25

monochromatic

#0D1737 #192B69 #253F9A #3153CB #607BD9

Accessibility & contrast

On white

9.31

#253F9A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#253F9A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253F9A

9.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253F9A	#FFFFFF	#000000	##FFFFFF
##253F9A	1.00	9.31	2.26	9.31
#FFFFFF	9.31	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004D9D

Deuteranopia (green-blind)

#004298

Tritanopia (blue-blind)

#005666

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #253f9a;
/* rgb */ color: rgb(37, 63, 154);
/* oklch */ color: oklch(40.6% 0.152 267.1);

Tailwind

colors: {
  custom: {
    50: '#7173b9',
    500: '#253f9a',
    950: '#000000',
  },
}

SCSS

$custom: #253f9a;
$custom-light: #7173b9;
$custom-dark: #000000;

JSON

{
  "hex": "#253f9a",
  "rgb": {
    "r": 37,
    "g": 63,
    "b": 154
  },
  "hsl": {
    "h": 226.667,
    "s": 61.257,
    "l": 37.451
  },
  "oklch": {
    "l": 0.4064,
    "c": 0.15186,
    "h": 267.1
  },
  "luminance": 0.06281
}

Semantic roles & 50–950 ramp

primary

#253F9A

secondary

#BEA85D

accent

#C143E4

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090811

muted

#7B7B80

Preview Lab

Preview with #253F9A

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

Preview Lab → · Contrast checker → · Palette generator →