#2B37B0#2B37B0

#2B37B0 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.5% C 0.189 H 270.7°. Best body text is #FFFFFF at 9.23:1 contrast (WCAG AA passes).

Color values

HEX	#2B37B0
RGB	rgb(43, 55, 176)
HSL	hsl(235, 61%, 43%)
HSV	hsv(235, 76%, 69%)
CMYK	cmyk(75.6%, 68.8%, 0%, 31%)
CIE-LAB	lab(30.35, 37.79, -65.40)
CIE-LCH	lch(30.35, 75.53, 300.02°)
OKLab	oklab(41.5% 0.0025 -0.1892)
OKLCH	oklch(41.5% 0.189 270.7)
XYZ	xyz(10.1963, 6.3795, 41.7599)
Luminance	0.0638 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B37B0 #B0A42B

analogous

#2B7AB0 #2B37B0 #612BB0

triadic

#2B37B0 #B02B37 #37B02B

tetradic

#2B37B0 #B02B7A #B0A42B #2BB061

square

#2B37B0 #B02B7A #B0A42B #2BB061

split-complementary

#2B37B0 #B0612B #7AB02B

monochromatic

#13184E #1F287F #2B37B0 #4653D2 #7881DE

Accessibility & contrast

On white

9.23

#2B37B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#2B37B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B37B0

9.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B37B0	#FFFFFF	#000000	##FFFFFF
##2B37B0	1.00	9.23	2.28	9.23
#FFFFFF	9.23	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EB4

Deuteranopia (green-blind)

#0041AE

Tritanopia (blue-blind)

#00586F

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #2b37b0;
/* rgb */ color: rgb(43, 55, 176);
/* oklch */ color: oklch(41.5% 0.189 270.7);

Tailwind

colors: {
  custom: {
    50: '#7a6ec9',
    500: '#2b37b0',
    950: '#000000',
  },
}

SCSS

$custom: #2b37b0;
$custom-light: #7a6ec9;
$custom-dark: #000000;

JSON

{
  "hex": "#2b37b0",
  "rgb": {
    "r": 43,
    "g": 55,
    "b": 176
  },
  "hsl": {
    "h": 234.586,
    "s": 60.731,
    "l": 42.941
  },
  "oklch": {
    "l": 0.41499,
    "c": 0.18926,
    "h": 270.7
  },
  "luminance": 0.06381
}

Semantic roles & 50–950 ramp

primary

#2B37B0

secondary

#C6BE71

accent

#D544E4

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #2B37B0

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

Preview Lab → · Contrast checker → · Palette generator →