#2B31AE#2B31AE

#2B31AE is a dark, vivid blue. Relative luminance 0.058; OKLCH L 40.3% C 0.193 H 271.7°. Best body text is #FFFFFF at 9.75:1 contrast (WCAG AA passes).

Color values

HEX	#2B31AE
RGB	rgb(43, 49, 174)
HSL	hsl(237, 60%, 43%)
HSV	hsv(237, 75%, 68%)
CMYK	cmyk(75.3%, 71.8%, 0%, 31.8%)
CIE-LAB	lab(28.81, 40.76, -66.73)
CIE-LCH	lch(28.81, 78.20, 301.42°)
OKLab	oklab(40.33% 0.0059 -0.1931)
OKLCH	oklch(40.33% 0.193 271.7)
XYZ	xyz(9.7320, 5.7652, 40.6361)
Luminance	0.0577 (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

#2B31AE #AEA82B

analogous

#2B72AE #2B31AE #672BAE

triadic

#2B31AE #AE2B31 #31AE2B

tetradic

#2B31AE #AE2B72 #AEA82B #2BAE67

square

#2B31AE #AE2B72 #AEA82B #2BAE67

split-complementary

#2B31AE #AE672B #72AE2B

monochromatic

#13154C #1F237D #2B31AE #454CD1 #767BDD

Accessibility & contrast

On white

9.75

#2B31AE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#2B31AE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B31AE

9.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B31AE	#FFFFFF	#000000	##FFFFFF
##2B31AE	1.00	9.75	2.15	9.75
#FFFFFF	9.75	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AB2

Deuteranopia (green-blind)

#003EAC

Tritanopia (blue-blind)

#00546C

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #2b31ae;
/* rgb */ color: rgb(43, 49, 174);
/* oklch */ color: oklch(40.3% 0.193 271.7);

Tailwind

colors: {
  custom: {
    50: '#7a6ac7',
    500: '#2b31ae',
    950: '#000000',
  },
}

SCSS

$custom: #2b31ae;
$custom-light: #7a6ac7;
$custom-dark: #000000;

JSON

{
  "hex": "#2b31ae",
  "rgb": {
    "r": 43,
    "g": 49,
    "b": 174
  },
  "hsl": {
    "h": 237.252,
    "s": 60.369,
    "l": 42.549
  },
  "oklch": {
    "l": 0.4033,
    "c": 0.19322,
    "h": 271.7
  },
  "luminance": 0.05766
}

Semantic roles & 50–950 ramp

primary

#2B31AE

secondary

#C5C170

accent

#DC44E4

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #2B31AE

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

Preview Lab → · Contrast checker → · Palette generator →