#2831AF#2831AF

#2831AF is a dark, vivid blue. Relative luminance 0.057; OKLCH L 40.3% C 0.195 H 270.7°. Best body text is #FFFFFF at 9.77:1 contrast (WCAG AA passes).

Color values

HEX	#2831AF
RGB	rgb(40, 49, 175)
HSL	hsl(236, 63%, 42%)
HSV	hsv(236, 77%, 69%)
CMYK	cmyk(77.1%, 72%, 0%, 31.4%)
CIE-LAB	lab(28.75, 40.83, -67.44)
CIE-LCH	lch(28.75, 78.84, 301.19°)
OKLab	oklab(40.27% 0.0025 -0.1952)
OKLCH	oklch(40.27% 0.195 270.7)
XYZ	xyz(9.7086, 5.7418, 41.1457)
Luminance	0.0574 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.60

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2831AF #AFA628

analogous

#2875AF #2831AF #6328AF

triadic

#2831AF #AF2831 #31AF28

tetradic

#2831AF #AF2875 #AFA628 #28AF63

square

#2831AF #AF2875 #AFA628 #28AF63

split-complementary

#2831AF #AF6328 #75AF28

monochromatic

#11154B #1D237D #2831AF #414AD4 #737ADF

Accessibility & contrast

On white

9.77

#2831AF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#2831AF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2831AF

9.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2831AF	#FFFFFF	#000000	##FFFFFF
##2831AF	1.00	9.77	2.15	9.77
#FFFFFF	9.77	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AB3

Deuteranopia (green-blind)

#003DAD

Tritanopia (blue-blind)

#00556D

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #2831af;
/* rgb */ color: rgb(40, 49, 175);
/* oklch */ color: oklch(40.3% 0.195 270.7);

Tailwind

colors: {
  custom: {
    50: '#796ac8',
    500: '#2831af',
    950: '#000000',
  },
}

SCSS

$custom: #2831af;
$custom-light: #796ac8;
$custom-dark: #000000;

JSON

{
  "hex": "#2831af",
  "rgb": {
    "r": 40,
    "g": 49,
    "b": 175
  },
  "hsl": {
    "h": 236,
    "s": 62.791,
    "l": 42.157
  },
  "oklch": {
    "l": 0.40274,
    "c": 0.19527,
    "h": 270.7
  },
  "luminance": 0.05743
}

Semantic roles & 50–950 ramp

primary

#2831AF

secondary

#C6C06D

accent

#DB42E6

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #2831AF

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

Preview Lab → · Contrast checker → · Palette generator →