#2B31AC#2B31AC

#2B31AC is a dark, vivid blue. Relative luminance 0.057; OKLCH L 40.1% C 0.191 H 271.8°. Best body text is #FFFFFF at 9.82:1 contrast (WCAG AA passes).

Color values

HEX	#2B31AC
RGB	rgb(43, 49, 172)
HSL	hsl(237, 60%, 42%)
HSV	hsv(237, 75%, 67%)
CMYK	cmyk(75%, 71.5%, 0%, 32.5%)
CIE-LAB	lab(28.61, 40.07, -65.87)
CIE-LCH	lch(28.61, 77.09, 301.31°)
OKLab	oklab(40.13% 0.0061 -0.1906)
OKLCH	oklch(40.13% 0.191 271.8)
XYZ	xyz(9.5385, 5.6878, 39.6169)
Luminance	0.0569 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.67

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B31AC #ACA62B

analogous

#2B72AC #2B31AC #652BAC

triadic

#2B31AC #AC2B31 #31AC2B

tetradic

#2B31AC #AC2B72 #ACA62B #2BAC65

square

#2B31AC #AC2B72 #ACA62B #2BAC65

split-complementary

#2B31AC #AC652B #72AC2B

monochromatic

#13154A #1F237B #2B31AC #444AD0 #757ADC

Accessibility & contrast

On white

9.82

#2B31AC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#2B31AC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B31AC

9.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B31AC	#FFFFFF	#000000	##FFFFFF
##2B31AC	1.00	9.82	2.14	9.82
#FFFFFF	9.82	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AB0

Deuteranopia (green-blind)

#003DAA

Tritanopia (blue-blind)

#00546B

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #2b31ac;
/* rgb */ color: rgb(43, 49, 172);
/* oklch */ color: oklch(40.1% 0.191 271.8);

Tailwind

colors: {
  custom: {
    50: '#796ac6',
    500: '#2b31ac',
    950: '#000000',
  },
}

SCSS

$custom: #2b31ac;
$custom-light: #796ac6;
$custom-dark: #000000;

JSON

{
  "hex": "#2b31ac",
  "rgb": {
    "r": 43,
    "g": 49,
    "b": 172
  },
  "hsl": {
    "h": 237.209,
    "s": 60,
    "l": 42.157
  },
  "oklch": {
    "l": 0.40125,
    "c": 0.19071,
    "h": 271.8
  },
  "luminance": 0.05689
}

Semantic roles & 50–950 ramp

primary

#2B31AC

secondary

#C4C06F

accent

#DC45E3

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #2B31AC

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

Preview Lab → · Contrast checker → · Palette generator →