#28309C#28309C

#28309C is a dark, vivid blue. Relative luminance 0.050; OKLCH L 38.2% C 0.172 H 271.8°. Best body text is #FFFFFF at 10.54:1 contrast (WCAG AA passes).

Color values

HEX	#28309C
RGB	rgb(40, 48, 156)
HSL	hsl(236, 59%, 38%)
HSV	hsv(236, 74%, 61%)
CMYK	cmyk(74.4%, 69.2%, 0%, 38.8%)
CIE-LAB	lab(26.63, 34.72, -59.45)
CIE-LCH	lch(26.63, 68.85, 300.29°)
OKLab	oklab(38.18% 0.0054 -0.1719)
OKLCH	oklch(38.18% 0.172 271.8)
XYZ	xyz(7.9307, 4.9645, 31.9863)
Luminance	0.0496 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28309C #9C9428

analogous

#286A9C #28309C #5A289C

triadic

#28309C #9C2830 #309C28

tetradic

#28309C #9C286A #9C9428 #289C5A

square

#28309C #9C286A #9C9428 #289C5A

split-complementary

#28309C #9C5A28 #6A9C28

monochromatic

#0F123B #1C216B #28309C #3640CB #676ED8

Accessibility & contrast

On white

10.54

#28309C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#28309C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28309C

10.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28309C	#FFFFFF	#000000	##FFFFFF
##28309C	1.00	10.54	1.99	10.54
#FFFFFF	10.54	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00449F

Deuteranopia (green-blind)

#00399A

Tritanopia (blue-blind)

#004D62

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #28309c;
/* rgb */ color: rgb(40, 48, 156);
/* oklch */ color: oklch(38.2% 0.172 271.8);

Tailwind

colors: {
  custom: {
    50: '#7469ba',
    500: '#28309c',
    950: '#000000',
  },
}

SCSS

$custom: #28309c;
$custom-light: #7469ba;
$custom-dark: #000000;

JSON

{
  "hex": "#28309c",
  "rgb": {
    "r": 40,
    "g": 48,
    "b": 156
  },
  "hsl": {
    "h": 235.862,
    "s": 59.184,
    "l": 38.431
  },
  "oklch": {
    "l": 0.38177,
    "c": 0.17202,
    "h": 271.8
  },
  "luminance": 0.04965
}

Semantic roles & 50–950 ramp

primary

#28309C

secondary

#BEB862

accent

#D845E2

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #28309C

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

Preview Lab → · Contrast checker → · Palette generator →