#2B37A3#2B37A3

#2B37A3 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.2% C 0.172 H 271.2°. Best body text is #FFFFFF at 9.64:1 contrast (WCAG AA passes).

Color values

HEX	#2B37A3
RGB	rgb(43, 55, 163)
HSL	hsl(234, 58%, 40%)
HSV	hsv(234, 74%, 64%)
CMYK	cmyk(73.6%, 66.3%, 0%, 36.1%)
CIE-LAB	lab(29.13, 33.12, -59.59)
CIE-LCH	lch(29.13, 68.18, 299.06°)
OKLab	oklab(40.24% 0.0036 -0.1723)
OKLCH	oklch(40.24% 0.172 271.2)
XYZ	xyz(8.9711, 5.8894, 35.3072)
Luminance	0.0589 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B37A3 #A3972B

analogous

#2B73A3 #2B37A3 #5B2BA3

triadic

#2B37A3 #A32B37 #37A32B

tetradic

#2B37A3 #A32B73 #A3972B #2BA35B

square

#2B37A3 #A32B73 #A3972B #2BA35B

split-complementary

#2B37A3 #A35B2B #73A32B

monochromatic

#111642 #1E2773 #2B37A3 #3F4DCC #6F7AD9

Accessibility & contrast

On white

9.64

#2B37A3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#2B37A3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B37A3

9.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B37A3	#FFFFFF	#000000	##FFFFFF
##2B37A3	1.00	9.64	2.18	9.64
#FFFFFF	9.64	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AA6

Deuteranopia (green-blind)

#003FA1

Tritanopia (blue-blind)

#005468

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #2b37a3;
/* rgb */ color: rgb(43, 55, 163);
/* oklch */ color: oklch(40.2% 0.172 271.2);

Tailwind

colors: {
  custom: {
    50: '#766ebf',
    500: '#2b37a3',
    950: '#000000',
  },
}

SCSS

$custom: #2b37a3;
$custom-light: #766ebf;
$custom-dark: #000000;

JSON

{
  "hex": "#2b37a3",
  "rgb": {
    "r": 43,
    "g": 55,
    "b": 163
  },
  "hsl": {
    "h": 234,
    "s": 58.252,
    "l": 40.392
  },
  "oklch": {
    "l": 0.40241,
    "c": 0.1723,
    "h": 271.2
  },
  "luminance": 0.0589
}

Semantic roles & 50–950 ramp

primary

#2B37A3

secondary

#C0B86A

accent

#D246E1

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #2B37A3

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

Preview Lab → · Contrast checker → · Palette generator →