#28339B#28339B

#28339B is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.6% C 0.167 H 271.2°. Best body text is #FFFFFF at 10.31:1 contrast (WCAG AA passes).

Color values

HEX	#28339B
RGB	rgb(40, 51, 155)
HSL	hsl(234, 59%, 38%)
HSV	hsv(234, 74%, 61%)
CMYK	cmyk(74.2%, 67.1%, 0%, 39.2%)
CIE-LAB	lab(27.25, 32.44, -57.82)
CIE-LCH	lch(27.25, 66.30, 299.29°)
OKLab	oklab(38.6% 0.0036 -0.1672)
OKLCH	oklch(38.6% 0.167 271.2)
XYZ	xyz(7.9733, 5.1845, 31.5845)
Luminance	0.0519 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28339B #9B9028

analogous

#286C9B #28339B #56289B

triadic

#28339B #9B2833 #339B28

tetradic

#28339B #9B286C #9B9028 #289B56

square

#28339B #9B286C #9B9028 #289B56

split-complementary

#28339B #9B5628 #6C9B28

monochromatic

#0F133A #1B236A #28339B #3544CB #6671D7

Accessibility & contrast

On white

10.31

#28339B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#28339B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28339B

10.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28339B	#FFFFFF	#000000	##FFFFFF
##28339B	1.00	10.31	2.04	10.31
#FFFFFF	10.31	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00469E

Deuteranopia (green-blind)

#003B99

Tritanopia (blue-blind)

#004F62

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #28339b;
/* rgb */ color: rgb(40, 51, 155);
/* oklch */ color: oklch(38.6% 0.167 271.2);

Tailwind

colors: {
  custom: {
    50: '#746bb9',
    500: '#28339b',
    950: '#000000',
  },
}

SCSS

$custom: #28339b;
$custom-light: #746bb9;
$custom-dark: #000000;

JSON

{
  "hex": "#28339b",
  "rgb": {
    "r": 40,
    "g": 51,
    "b": 155
  },
  "hsl": {
    "h": 234.261,
    "s": 58.974,
    "l": 38.235
  },
  "oklch": {
    "l": 0.38599,
    "c": 0.16721,
    "h": 271.2
  },
  "luminance": 0.05185
}

Semantic roles & 50–950 ramp

primary

#28339B

secondary

#BDB561

accent

#D346E2

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#090612

muted

#7B7A81

Preview Lab

Preview with #28339B

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

Preview Lab → · Contrast checker → · Palette generator →