#2B31B8#2B31B8

#2B31B8 is a dark, highly saturated blue. Relative luminance 0.062; OKLCH L 41.4% C 0.206 H 271.2°. Best body text is #FFFFFF at 9.40:1 contrast (WCAG AA passes).

Color values

HEX	#2B31B8
RGB	rgb(43, 49, 184)
HSL	hsl(237, 62%, 45%)
HSV	hsv(237, 77%, 72%)
CMYK	cmyk(76.6%, 73.4%, 0%, 27.8%)
CIE-LAB	lab(29.84, 44.18, -71.00)
CIE-LCH	lch(29.84, 83.63, 301.89°)
OKLab	oklab(41.37% 0.0044 -0.2056)
OKLCH	oklch(41.37% 0.206 271.2)
XYZ	xyz(10.7434, 6.1697, 45.9628)
Luminance	0.0617 (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

#2B31B8 #B8B22B

analogous

#2B78B8 #2B31B8 #6C2BB8

triadic

#2B31B8 #B82B31 #31B82B

tetradic

#2B31B8 #B82B78 #B8B22B #2BB86C

square

#2B31B8 #B82B78 #B8B22B #2BB86C

split-complementary

#2B31B8 #B86C2B #78B82B

monochromatic

#141755 #1F2486 #2B31B8 #4B51D5 #7D81E1

Accessibility & contrast

On white

9.40

#2B31B8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#2B31B8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B31B8

9.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B31B8	#FFFFFF	#000000	##FFFFFF
##2B31B8	1.00	9.40	2.23	9.40
#FFFFFF	9.40	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DBC

Deuteranopia (green-blind)

#003FB6

Tritanopia (blue-blind)

#005872

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #2b31b8;
/* rgb */ color: rgb(43, 49, 184);
/* oklch */ color: oklch(41.4% 0.206 271.2);

Tailwind

colors: {
  custom: {
    50: '#7c6acf',
    500: '#2b31b8',
    950: '#000000',
  },
}

SCSS

$custom: #2b31b8;
$custom-light: #7c6acf;
$custom-dark: #000000;

JSON

{
  "hex": "#2b31b8",
  "rgb": {
    "r": 43,
    "g": 49,
    "b": 184
  },
  "hsl": {
    "h": 237.447,
    "s": 62.115,
    "l": 44.51
  },
  "oklch": {
    "l": 0.41369,
    "c": 0.20561,
    "h": 271.2
  },
  "luminance": 0.06171
}

Semantic roles & 50–950 ramp

primary

#2B31B8

secondary

#C9C576

accent

#DE43E5

background

#F8F6FC

surface

#EFEBF9

border

#CAC6D2

text

#0B0614

muted

#7C7A82

Preview Lab

Preview with #2B31B8

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

Preview Lab → · Contrast checker → · Palette generator →