#28308E#28308E

#28308E is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.8% C 0.153 H 272.5°. Best body text is #FFFFFF at 11.03:1 contrast (WCAG AA passes).

Color values

HEX	#28308E
RGB	rgb(40, 48, 142)
HSL	hsl(235, 56%, 36%)
HSV	hsv(235, 72%, 56%)
CMYK	cmyk(71.8%, 66.2%, 0%, 44.3%)
CIE-LAB	lab(25.31, 29.63, -53.01)
CIE-LCH	lch(25.31, 60.72, 299.20°)
OKLab	oklab(36.81% 0.0066 -0.1531)
OKLCH	oklch(36.81% 0.153 272.5)
XYZ	xyz(6.8129, 4.5174, 26.0988)
Luminance	0.0452 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28308E #8E8628

analogous

#28638E #28308E #53288E

triadic

#28308E #8E2830 #308E28

tetradic

#28308E #8E2863 #8E8628 #288E53

square

#28308E #8E2863 #8E8628 #288E53

split-complementary

#28308E #8E5328 #638E28

monochromatic

#0D102F #1B205E #28308E #3540BE #5F68D2

Accessibility & contrast

On white

11.03

#28308E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#28308E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28308E

11.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28308E	#FFFFFF	#000000	##FFFFFF
##28308E	1.00	11.03	1.90	11.03
#FFFFFF	11.03	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004191

Deuteranopia (green-blind)

#00378C

Tritanopia (blue-blind)

#00495A

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #28308e;
/* rgb */ color: rgb(40, 48, 142);
/* oklch */ color: oklch(36.8% 0.153 272.5);

Tailwind

colors: {
  custom: {
    50: '#7168b0',
    500: '#28308e',
    950: '#000000',
  },
}

SCSS

$custom: #28308e;
$custom-light: #7168b0;
$custom-dark: #000000;

JSON

{
  "hex": "#28308e",
  "rgb": {
    "r": 40,
    "g": 48,
    "b": 142
  },
  "hsl": {
    "h": 235.294,
    "s": 56.044,
    "l": 35.686
  },
  "oklch": {
    "l": 0.36812,
    "c": 0.15324,
    "h": 272.5
  },
  "luminance": 0.04518
}

Semantic roles & 50–950 ramp

primary

#28308E

secondary

#B7B05B

accent

#D448DF

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#090611

muted

#7B7A80

Preview Lab

Preview with #28308E

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

Preview Lab → · Contrast checker → · Palette generator →