#2537A2#2537A2

#2537A2 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.8% C 0.173 H 269.2°. Best body text is #FFFFFF at 9.78:1 contrast (WCAG AA passes).

Color values

HEX	#2537A2
RGB	rgb(37, 55, 162)
HSL	hsl(231, 63%, 39%)
HSV	hsv(231, 77%, 64%)
CMYK	cmyk(77.2%, 66%, 0%, 36.5%)
CIE-LAB	lab(28.73, 32.09, -59.66)
CIE-LCH	lch(28.73, 67.74, 298.28°)
OKLab	oklab(39.83% -0.0024 -0.1726)
OKLCH	oklch(39.83% 0.173 269.2)
XYZ	xyz(8.6485, 5.7334, 34.8263)
Luminance	0.0573 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2537A2 #A29025

analogous

#2576A2 #2537A2 #5225A2

triadic

#2537A2 #A22537 #37A225

tetradic

#2537A2 #A22576 #A29025 #25A252

square

#2537A2 #A22576 #A29025 #25A252

split-complementary

#2537A2 #A25225 #76A225

monochromatic

#0E153E #1A2670 #2537A2 #344AD1 #6577DC

Accessibility & contrast

On white

9.78

#2537A2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#2537A2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2537A2

9.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2537A2	#FFFFFF	#000000	##FFFFFF
##2537A2	1.00	9.78	2.15	9.78
#FFFFFF	9.78	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AA5

Deuteranopia (green-blind)

#003EA0

Tritanopia (blue-blind)

#005367

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #2537a2;
/* rgb */ color: rgb(37, 55, 162);
/* oklch */ color: oklch(39.8% 0.173 269.2);

Tailwind

colors: {
  custom: {
    50: '#746ebf',
    500: '#2537a2',
    950: '#000000',
  },
}

SCSS

$custom: #2537a2;
$custom-light: #746ebf;
$custom-dark: #000000;

JSON

{
  "hex": "#2537a2",
  "rgb": {
    "r": 37,
    "g": 55,
    "b": 162
  },
  "hsl": {
    "h": 231.36,
    "s": 62.814,
    "l": 39.02
  },
  "oklch": {
    "l": 0.39834,
    "c": 0.17261,
    "h": 269.2
  },
  "luminance": 0.05734
}

Semantic roles & 50–950 ramp

primary

#2537A2

secondary

#C2B461

accent

#CE42E6

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #2537A2

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

Preview Lab → · Contrast checker → · Palette generator →