#2B31A5#2B31A5

#2B31A5 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 39.4% C 0.182 H 272.2°. Best body text is #FFFFFF at 10.07:1 contrast (WCAG AA passes).

Color values

HEX	#2B31A5
RGB	rgb(43, 49, 165)
HSL	hsl(237, 59%, 41%)
HSV	hsv(237, 74%, 65%)
CMYK	cmyk(73.9%, 70.3%, 0%, 35.3%)
CIE-LAB	lab(27.92, 37.62, -62.80)
CIE-LCH	lch(27.92, 73.20, 300.93°)
OKLab	oklab(39.42% 0.0071 -0.1816)
OKLCH	oklch(39.42% 0.182 272.2)
XYZ	xyz(8.8838, 5.4259, 36.1691)
Luminance	0.0543 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B31A5 #A59F2B

analogous

#2B6EA5 #2B31A5 #622BA5

triadic

#2B31A5 #A52B31 #31A52B

tetradic

#2B31A5 #A52B6E #A59F2B #2BA562

square

#2B31A5 #A52B6E #A59F2B #2BA562

split-complementary

#2B31A5 #A5622B #6EA52B

monochromatic

#121444 #1E2374 #2B31A5 #4047CD #7176DA

Accessibility & contrast

On white

10.07

#2B31A5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#2B31A5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B31A5

10.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B31A5	#FFFFFF	#000000	##FFFFFF
##2B31A5	1.00	10.07	2.09	10.07
#FFFFFF	10.07	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048A9

Deuteranopia (green-blind)

#003CA3

Tritanopia (blue-blind)

#005167

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #2b31a5;
/* rgb */ color: rgb(43, 49, 165);
/* oklch */ color: oklch(39.4% 0.182 272.2);

Tailwind

colors: {
  custom: {
    50: '#786ac1',
    500: '#2b31a5',
    950: '#000000',
  },
}

SCSS

$custom: #2b31a5;
$custom-light: #786ac1;
$custom-dark: #000000;

JSON

{
  "hex": "#2b31a5",
  "rgb": {
    "r": 43,
    "g": 49,
    "b": 165
  },
  "hsl": {
    "h": 237.049,
    "s": 58.654,
    "l": 40.784
  },
  "oklch": {
    "l": 0.39416,
    "c": 0.18179,
    "h": 272.2
  },
  "luminance": 0.05427
}

Semantic roles & 50–950 ramp

primary

#2B31A5

secondary

#C1BD6B

accent

#DA46E2

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #2B31A5

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

Preview Lab → · Contrast checker → · Palette generator →