#2B31AD#2B31AD

#2B31AD is a dark, vivid blue. Relative luminance 0.057; OKLCH L 40.2% C 0.192 H 271.8°. Best body text is #FFFFFF at 9.79:1 contrast (WCAG AA passes).

Color values

HEX	#2B31AD
RGB	rgb(43, 49, 173)
HSL	hsl(237, 60%, 42%)
HSV	hsv(237, 75%, 68%)
CMYK	cmyk(75.1%, 71.7%, 0%, 32.2%)
CIE-LAB	lab(28.71, 40.41, -66.30)
CIE-LCH	lch(28.71, 77.65, 301.36°)
OKLab	oklab(40.23% 0.006 -0.1919)
OKLCH	oklch(40.23% 0.192 271.8)
XYZ	xyz(9.6349, 5.7263, 40.1246)
Luminance	0.0573 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.57

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B31AD #ADA72B

analogous

#2B72AD #2B31AD #662BAD

triadic

#2B31AD #AD2B31 #31AD2B

tetradic

#2B31AD #AD2B72 #ADA72B #2BAD66

square

#2B31AD #AD2B72 #ADA72B #2BAD66

split-complementary

#2B31AD #AD662B #72AD2B

monochromatic

#13154B #1F237C #2B31AD #454BD1 #767ADD

Accessibility & contrast

On white

9.79

#2B31AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#2B31AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B31AD

9.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B31AD	#FFFFFF	#000000	##FFFFFF
##2B31AD	1.00	9.79	2.15	9.79
#FFFFFF	9.79	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AB1

Deuteranopia (green-blind)

#003DAB

Tritanopia (blue-blind)

#00546B

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #2b31ad;
/* rgb */ color: rgb(43, 49, 173);
/* oklch */ color: oklch(40.2% 0.192 271.8);

Tailwind

colors: {
  custom: {
    50: '#796ac7',
    500: '#2b31ad',
    950: '#000000',
  },
}

SCSS

$custom: #2b31ad;
$custom-light: #796ac7;
$custom-dark: #000000;

JSON

{
  "hex": "#2b31ad",
  "rgb": {
    "r": 43,
    "g": 49,
    "b": 173
  },
  "hsl": {
    "h": 237.231,
    "s": 60.185,
    "l": 42.353
  },
  "oklch": {
    "l": 0.40228,
    "c": 0.19196,
    "h": 271.8
  },
  "luminance": 0.05727
}

Semantic roles & 50–950 ramp

primary

#2B31AD

secondary

#C4C16F

accent

#DC44E3

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #2B31AD

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

Preview Lab → · Contrast checker → · Palette generator →