#2831AD#2831AD

#2831AD is a dark, vivid blue. Relative luminance 0.057; OKLCH L 40.1% C 0.193 H 270.8°. Best body text is #FFFFFF at 9.85:1 contrast (WCAG AA passes).

Color values

HEX	#2831AD
RGB	rgb(40, 49, 173)
HSL	hsl(236, 62%, 42%)
HSV	hsv(236, 77%, 68%)
CMYK	cmyk(76.9%, 71.7%, 0%, 32.2%)
CIE-LAB	lab(28.55, 40.13, -66.57)
CIE-LCH	lch(28.55, 77.74, 301.08°)
OKLab	oklab(40.07% 0.0027 -0.1927)
OKLCH	oklch(40.07% 0.193 270.8)
XYZ	xyz(9.5136, 5.6638, 40.1189)
Luminance	0.0566 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2831AD #ADA428

analogous

#2874AD #2831AD #6228AD

triadic

#2831AD #AD2831 #31AD28

tetradic

#2831AD #AD2874 #ADA428 #28AD62

square

#2831AD #AD2874 #ADA428 #28AD62

split-complementary

#2831AD #AD6228 #74AD28

monochromatic

#11154A #1D237B #2831AD #3F49D3 #7179DE

Accessibility & contrast

On white

9.85

#2831AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#2831AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2831AD

9.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2831AD	#FFFFFF	#000000	##FFFFFF
##2831AD	1.00	9.85	2.13	9.85
#FFFFFF	9.85	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AB1

Deuteranopia (green-blind)

#003DAB

Tritanopia (blue-blind)

#00546B

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #2831ad;
/* rgb */ color: rgb(40, 49, 173);
/* oklch */ color: oklch(40.1% 0.193 270.8);

Tailwind

colors: {
  custom: {
    50: '#786ac7',
    500: '#2831ad',
    950: '#000000',
  },
}

SCSS

$custom: #2831ad;
$custom-light: #786ac7;
$custom-dark: #000000;

JSON

{
  "hex": "#2831ad",
  "rgb": {
    "r": 40,
    "g": 49,
    "b": 173
  },
  "hsl": {
    "h": 235.94,
    "s": 62.441,
    "l": 41.765
  },
  "oklch": {
    "l": 0.40067,
    "c": 0.19276,
    "h": 270.8
  },
  "luminance": 0.05665
}

Semantic roles & 50–950 ramp

primary

#2831AD

secondary

#C5BF6C

accent

#DA42E6

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #2831AD

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

Preview Lab → · Contrast checker → · Palette generator →