#2537A9#2537A9

#2537A9 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.5% C 0.182 H 269.1°. Best body text is #FFFFFF at 9.55:1 contrast (WCAG AA passes).

Color values

HEX	#2537A9
RGB	rgb(37, 55, 169)
HSL	hsl(232, 64%, 40%)
HSV	hsv(232, 78%, 66%)
CMYK	cmyk(78.1%, 67.5%, 0%, 33.7%)
CIE-LAB	lab(29.39, 34.68, -62.80)
CIE-LCH	lch(29.39, 71.74, 298.91°)
OKLab	oklab(40.51% -0.0029 -0.1818)
OKLCH	oklch(40.51% 0.182 269.1)
XYZ	xyz(9.2881, 5.9892, 38.1949)
Luminance	0.0599 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2537A9 #A99725

analogous

#2579A9 #2537A9 #5525A9

triadic

#2537A9 #A92537 #37A925

tetradic

#2537A9 #A92579 #A99725 #25A955

square

#2537A9 #A92579 #A99725 #25A955

split-complementary

#2537A9 #A95525 #79A925

monochromatic

#0F1645 #1A2777 #2537A9 #384DD3 #6A7ADE

Accessibility & contrast

On white

9.55

#2537A9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#2537A9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2537A9

9.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2537A9	#FFFFFF	#000000	##FFFFFF
##2537A9	1.00	9.55	2.20	9.55
#FFFFFF	9.55	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CAD

Deuteranopia (green-blind)

#003FA7

Tritanopia (blue-blind)

#00566B

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #2537a9;
/* rgb */ color: rgb(37, 55, 169);
/* oklch */ color: oklch(40.5% 0.182 269.1);

Tailwind

colors: {
  custom: {
    50: '#766ec4',
    500: '#2537a9',
    950: '#000000',
  },
}

SCSS

$custom: #2537a9;
$custom-light: #766ec4;
$custom-dark: #000000;

JSON

{
  "hex": "#2537a9",
  "rgb": {
    "r": 37,
    "g": 55,
    "b": 169
  },
  "hsl": {
    "h": 231.818,
    "s": 64.078,
    "l": 40.392
  },
  "oklch": {
    "l": 0.40513,
    "c": 0.1818,
    "h": 269.1
  },
  "luminance": 0.0599
}

Semantic roles & 50–950 ramp

primary

#2537A9

secondary

#C4B865

accent

#D041E7

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #2537A9

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

Preview Lab → · Contrast checker → · Palette generator →