#28339E#28339E

#28339E is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.9% C 0.171 H 271.1°. Best body text is #FFFFFF at 10.21:1 contrast (WCAG AA passes).

Color values

HEX	#28339E
RGB	rgb(40, 51, 158)
HSL	hsl(234, 60%, 39%)
HSV	hsv(234, 75%, 62%)
CMYK	cmyk(74.7%, 67.7%, 0%, 38%)
CIE-LAB	lab(27.54, 33.53, -59.18)
CIE-LCH	lch(27.54, 68.02, 299.54°)
OKLab	oklab(38.89% 0.0033 -0.1712)
OKLCH	oklch(38.89% 0.171 271.1)
XYZ	xyz(8.2284, 5.2865, 32.9279)
Luminance	0.0529 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28339E #9E9328

analogous

#286E9E #28339E #58289E

triadic

#28339E #9E2833 #339E28

tetradic

#28339E #9E286E #9E9328 #289E58

square

#28339E #9E286E #9E9328 #289E58

split-complementary

#28339E #9E5828 #6E9E28

monochromatic

#0F133C #1C236D #28339E #3745CC #6872D9

Accessibility & contrast

On white

10.21

#28339E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#28339E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28339E

10.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28339E	#FFFFFF	#000000	##FFFFFF
##28339E	1.00	10.21	2.06	10.21
#FFFFFF	10.21	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047A1

Deuteranopia (green-blind)

#003B9C

Tritanopia (blue-blind)

#005064

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #28339e;
/* rgb */ color: rgb(40, 51, 158);
/* oklch */ color: oklch(38.9% 0.171 271.1);

Tailwind

colors: {
  custom: {
    50: '#756bbc',
    500: '#28339e',
    950: '#000000',
  },
}

SCSS

$custom: #28339e;
$custom-light: #756bbc;
$custom-dark: #000000;

JSON

{
  "hex": "#28339e",
  "rgb": {
    "r": 40,
    "g": 51,
    "b": 158
  },
  "hsl": {
    "h": 234.407,
    "s": 59.596,
    "l": 38.824
  },
  "oklch": {
    "l": 0.3889,
    "c": 0.17119,
    "h": 271.1
  },
  "luminance": 0.05287
}

Semantic roles & 50–950 ramp

primary

#28339E

secondary

#BFB663

accent

#D445E3

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #28339E

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

Preview Lab → · Contrast checker → · Palette generator →