#2828B3#2828B3

#2828B3 is a dark, highly saturated blue. Relative luminance 0.052; OKLCH L 39.4% C 0.209 H 271.5°. Best body text is #FFFFFF at 10.27:1 contrast (WCAG AA passes).

Color values

HEX	#2828B3
RGB	rgb(40, 40, 179)
HSL	hsl(240, 63%, 43%)
HSV	hsv(240, 78%, 70%)
CMYK	cmyk(77.7%, 77.7%, 0%, 29.8%)
CIE-LAB	lab(27.36, 47.31, -72.13)
CIE-LCH	lch(27.36, 86.26, 303.26°)
OKLab	oklab(39.41% 0.0054 -0.2088)
OKLCH	oklch(39.41% 0.209 271.5)
XYZ	xyz(9.7678, 5.2223, 43.1323)
Luminance	0.0522 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2828B3 #B3B328

analogous

#286DB3 #2828B3 #6D28B3

triadic

#2828B3 #B32828 #28B328

tetradic

#2828B3 #B3286D #B3B328 #28B36D

square

#2828B3 #B3286D #B3B328 #28B36D

split-complementary

#2828B3 #B36D28 #6DB328

monochromatic

#12124F #1D1D81 #2828B3 #4343D5 #7575E0

Accessibility & contrast

On white

10.27

#2828B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#2828B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2828B3

10.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2828B3	#FFFFFF	#000000	##FFFFFF
##2828B3	1.00	10.27	2.04	10.27
#FFFFFF	10.27	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047B7

Deuteranopia (green-blind)

#0039B1

Tritanopia (blue-blind)

#00526D

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #2828b3;
/* rgb */ color: rgb(40, 40, 179);
/* oklch */ color: oklch(39.4% 0.209 271.5);

Tailwind

colors: {
  custom: {
    50: '#7b64cb',
    500: '#2828b3',
    950: '#000000',
  },
}

SCSS

$custom: #2828b3;
$custom-light: #7b64cb;
$custom-dark: #000000;

JSON

{
  "hex": "#2828b3",
  "rgb": {
    "r": 40,
    "g": 40,
    "b": 179
  },
  "hsl": {
    "h": 240,
    "s": 63.47,
    "l": 42.941
  },
  "oklch": {
    "l": 0.39411,
    "c": 0.20889,
    "h": 271.5
  },
  "luminance": 0.05223
}

Semantic roles & 50–950 ramp

primary

#2828B3

secondary

#C8C86F

accent

#E641E6

background

#F8F6FC

surface

#EFEBF9

border

#CAC6D2

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #2828B3

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

Preview Lab → · Contrast checker → · Palette generator →