#28339F#28339F

#28339F is a dark, vivid blue. Relative luminance 0.053; OKLCH L 39.0% C 0.173 H 271.1°. Best body text is #FFFFFF at 10.17:1 contrast (WCAG AA passes).

Color values

HEX	#28339F
RGB	rgb(40, 51, 159)
HSL	hsl(234, 60%, 39%)
HSV	hsv(234, 75%, 62%)
CMYK	cmyk(74.8%, 67.9%, 0%, 37.6%)
CIE-LAB	lab(27.63, 33.90, -59.64)
CIE-LCH	lch(27.63, 68.60, 299.61°)
OKLab	oklab(38.99% 0.0032 -0.1725)
OKLCH	oklch(38.99% 0.173 271.1)
XYZ	xyz(8.3148, 5.3211, 33.3830)
Luminance	0.0532 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28339F #9F9428

analogous

#286F9F #28339F #59289F

triadic

#28339F #9F2833 #339F28

tetradic

#28339F #9F286F #9F9428 #289F59

square

#28339F #9F286F #9F9428 #289F59

split-complementary

#28339F #9F5928 #6F9F28

monochromatic

#0F143D #1C236E #28339F #3745CD #6873D9

Accessibility & contrast

On white

10.17

#28339F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#28339F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28339F

10.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28339F	#FFFFFF	#000000	##FFFFFF
##28339F	1.00	10.17	2.06	10.17
#FFFFFF	10.17	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047A2

Deuteranopia (green-blind)

#003C9D

Tritanopia (blue-blind)

#005064

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #28339f;
/* rgb */ color: rgb(40, 51, 159);
/* oklch */ color: oklch(39.0% 0.173 271.1);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#28339f",
  "rgb": {
    "r": 40,
    "g": 51,
    "b": 159
  },
  "hsl": {
    "h": 234.454,
    "s": 59.799,
    "l": 39.02
  },
  "oklch": {
    "l": 0.38988,
    "c": 0.17251,
    "h": 271.1
  },
  "luminance": 0.05322
}

Semantic roles & 50–950 ramp

primary

#28339F

secondary

#BFB764

accent

#D445E3

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #28339F

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

Preview Lab → · Contrast checker → · Palette generator →