#28309F#28309F

#28309F is a dark, vivid blue. Relative luminance 0.051; OKLCH L 38.5% C 0.176 H 271.6°. Best body text is #FFFFFF at 10.43:1 contrast (WCAG AA passes).

Color values

HEX	#28309F
RGB	rgb(40, 48, 159)
HSL	hsl(236, 60%, 39%)
HSV	hsv(236, 75%, 62%)
CMYK	cmyk(74.8%, 69.8%, 0%, 37.6%)
CIE-LAB	lab(26.93, 35.80, -60.79)
CIE-LCH	lch(26.93, 70.55, 300.49°)
OKLab	oklab(38.48% 0.005 -0.1759)
OKLCH	oklch(38.48% 0.176 271.6)
XYZ	xyz(8.1879, 5.0674, 33.3407)
Luminance	0.0507 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28309F #9F9728

analogous

#286C9F #28309F #5C289F

triadic

#28309F #9F2830 #309F28

tetradic

#28309F #9F286C #9F9728 #289F5C

square

#28309F #9F286C #9F9728 #289F5C

split-complementary

#28309F #9F5C28 #6C9F28

monochromatic

#0F123D #1C216E #28309F #3741CD #6870D9

Accessibility & contrast

On white

10.43

#28309F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#28309F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28309F

10.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28309F	#FFFFFF	#000000	##FFFFFF
##28309F	1.00	10.43	2.01	10.43
#FFFFFF	10.43	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0045A2

Deuteranopia (green-blind)

#003A9D

Tritanopia (blue-blind)

#004E63

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #28309f;
/* rgb */ color: rgb(40, 48, 159);
/* oklch */ color: oklch(38.5% 0.176 271.6);

Tailwind

colors: {
  custom: {
    50: '#7569bc',
    500: '#28309f',
    950: '#000000',
  },
}

SCSS

$custom: #28309f;
$custom-light: #7569bc;
$custom-dark: #000000;

JSON

{
  "hex": "#28309f",
  "rgb": {
    "r": 40,
    "g": 48,
    "b": 159
  },
  "hsl": {
    "h": 235.966,
    "s": 59.799,
    "l": 39.02
  },
  "oklch": {
    "l": 0.38477,
    "c": 0.17595,
    "h": 271.6
  },
  "luminance": 0.05068
}

Semantic roles & 50–950 ramp

primary

#28309F

secondary

#BFB964

accent

#D845E3

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #28309F

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

Preview Lab → · Contrast checker → · Palette generator →