#2831C4#2831C4

#2831C4 is a dark, highly saturated blue. Relative luminance 0.066; OKLCH L 42.5% C 0.221 H 269.8°. Best body text is #FFFFFF at 9.03:1 contrast (WCAG AA passes).

Color values

HEX	#2831C4
RGB	rgb(40, 49, 196)
HSL	hsl(237, 66%, 46%)
HSV	hsv(237, 80%, 77%)
CMYK	cmyk(79.6%, 75%, 0%, 23.1%)
CIE-LAB	lab(30.95, 47.98, -76.24)
CIE-LCH	lch(30.95, 90.08, 302.19°)
OKLab	oklab(42.5% -0.0006 -0.2208)
OKLCH	oklch(42.5% 0.221 269.8)
XYZ	xyz(11.9338, 6.6319, 52.8650)
Luminance	0.0663 (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

#2831C4 #C4BB28

analogous

#287FC4 #2831C4 #6D28C4

triadic

#2831C4 #C42831 #31C428

tetradic

#2831C4 #C4287F #C4BB28 #28C46D

square

#2831C4 #C4287F #C4BB28 #28C46D

split-complementary

#2831C4 #C46D28 #7FC428

monochromatic

#13185E #1E2491 #2831C4 #4E56DB #8187E5

Accessibility & contrast

On white

9.03

#2831C4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#2831C4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2831C4

9.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2831C4	#FFFFFF	#000000	##FFFFFF
##2831C4	1.00	9.03	2.33	9.03
#FFFFFF	9.03	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051C8

Deuteranopia (green-blind)

#0041C1

Tritanopia (blue-blind)

#005D78

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #2831c4;
/* rgb */ color: rgb(40, 49, 196);
/* oklch */ color: oklch(42.5% 0.221 269.8);

Tailwind

colors: {
  custom: {
    50: '#7e6bd7',
    500: '#2831c4',
    950: '#000000',
  },
}

SCSS

$custom: #2831c4;
$custom-light: #7e6bd7;
$custom-dark: #000000;

JSON

{
  "hex": "#2831c4",
  "rgb": {
    "r": 40,
    "g": 49,
    "b": 196
  },
  "hsl": {
    "h": 236.538,
    "s": 66.102,
    "l": 46.275
  },
  "oklch": {
    "l": 0.42498,
    "c": 0.22084,
    "h": 269.8
  },
  "luminance": 0.06633
}

Semantic roles & 50–950 ramp

primary

#2831C4

secondary

#CEC97A

accent

#DF3FE9

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0C0715

muted

#7D7A83

Preview Lab

Preview with #2831C4

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

Preview Lab → · Contrast checker → · Palette generator →