#2831AC#2831AC

#2831AC is a dark, vivid blue. Relative luminance 0.056; OKLCH L 40.0% C 0.192 H 270.9°. Best body text is #FFFFFF at 9.88:1 contrast (WCAG AA passes).

Color values

HEX	#2831AC
RGB	rgb(40, 49, 172)
HSL	hsl(236, 62%, 42%)
HSV	hsv(236, 77%, 67%)
CMYK	cmyk(76.7%, 71.5%, 0%, 32.5%)
CIE-LAB	lab(28.45, 39.78, -66.14)
CIE-LCH	lch(28.45, 77.19, 301.03°)
OKLab	oklab(39.96% 0.0029 -0.1915)
OKLCH	oklch(39.96% 0.192 270.9)
XYZ	xyz(9.4172, 5.6253, 39.6112)
Luminance	0.0563 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2831AC #ACA328

analogous

#2873AC #2831AC #6128AC

triadic

#2831AC #AC2831 #31AC28

tetradic

#2831AC #AC2873 #ACA328 #28AC61

square

#2831AC #AC2873 #ACA328 #28AC61

split-complementary

#2831AC #AC6128 #73AC28

monochromatic

#111549 #1C237A #2831AC #3F49D2 #7178DE

Accessibility & contrast

On white

9.88

#2831AC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#2831AC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2831AC

9.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2831AC	#FFFFFF	#000000	##FFFFFF
##2831AC	1.00	9.88	2.13	9.88
#FFFFFF	9.88	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049B0

Deuteranopia (green-blind)

#003DAA

Tritanopia (blue-blind)

#00546B

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #2831ac;
/* rgb */ color: rgb(40, 49, 172);
/* oklch */ color: oklch(40.0% 0.192 270.9);

Tailwind

colors: {
  custom: {
    50: '#786ac6',
    500: '#2831ac',
    950: '#000000',
  },
}

SCSS

$custom: #2831ac;
$custom-light: #786ac6;
$custom-dark: #000000;

JSON

{
  "hex": "#2831ac",
  "rgb": {
    "r": 40,
    "g": 49,
    "b": 172
  },
  "hsl": {
    "h": 235.909,
    "s": 62.264,
    "l": 41.569
  },
  "oklch": {
    "l": 0.39963,
    "c": 0.1915,
    "h": 270.9
  },
  "luminance": 0.05626
}

Semantic roles & 50–950 ramp

primary

#2831AC

secondary

#C5BF6B

accent

#DA42E5

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #2831AC

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

Preview Lab → · Contrast checker → · Palette generator →