#2831A5#2831A5

#2831A5 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 39.2% C 0.183 H 271.2°. Best body text is #FFFFFF at 10.13:1 contrast (WCAG AA passes).

Color values

HEX	#2831A5
RGB	rgb(40, 49, 165)
HSL	hsl(236, 61%, 40%)
HSV	hsv(236, 76%, 65%)
CMYK	cmyk(75.8%, 70.3%, 0%, 35.3%)
CIE-LAB	lab(27.75, 37.31, -63.08)
CIE-LCH	lch(27.75, 73.29, 300.61°)
OKLab	oklab(39.25% 0.0038 -0.1825)
OKLCH	oklch(39.25% 0.183 271.2)
XYZ	xyz(8.7626, 5.3634, 36.1634)
Luminance	0.0536 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2831A5 #A59C28

analogous

#286FA5 #2831A5 #5D28A5

triadic

#2831A5 #A52831 #31A528

tetradic

#2831A5 #A5286F #A59C28 #28A55D

square

#2831A5 #A5286F #A59C28 #28A55D

split-complementary

#2831A5 #A55D28 #6FA528

monochromatic

#101442 #1C2274 #2831A5 #3B45CF #6C74DB

Accessibility & contrast

On white

10.13

#2831A5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#2831A5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2831A5

10.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2831A5	#FFFFFF	#000000	##FFFFFF
##2831A5	1.00	10.13	2.07	10.13
#FFFFFF	10.13	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048A9

Deuteranopia (green-blind)

#003BA3

Tritanopia (blue-blind)

#005167

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #2831a5;
/* rgb */ color: rgb(40, 49, 165);
/* oklch */ color: oklch(39.2% 0.183 271.2);

Tailwind

colors: {
  custom: {
    50: '#766ac1',
    500: '#2831a5',
    950: '#000000',
  },
}

SCSS

$custom: #2831a5;
$custom-light: #766ac1;
$custom-dark: #000000;

JSON

{
  "hex": "#2831a5",
  "rgb": {
    "r": 40,
    "g": 49,
    "b": 165
  },
  "hsl": {
    "h": 235.68,
    "s": 60.976,
    "l": 40.196
  },
  "oklch": {
    "l": 0.39248,
    "c": 0.18259,
    "h": 271.2
  },
  "luminance": 0.05364
}

Semantic roles & 50–950 ramp

primary

#2831A5

secondary

#C2BB67

accent

#D944E4

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #2831A5

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

Preview Lab → · Contrast checker → · Palette generator →