#28309D#28309D

#28309D is a dark, vivid blue. Relative luminance 0.050; OKLCH L 38.3% C 0.173 H 271.7°. Best body text is #FFFFFF at 10.50:1 contrast (WCAG AA passes).

Color values

HEX	#28309D
RGB	rgb(40, 48, 157)
HSL	hsl(236, 59%, 39%)
HSV	hsv(236, 75%, 62%)
CMYK	cmyk(74.5%, 69.4%, 0%, 38.4%)
CIE-LAB	lab(26.73, 35.08, -59.90)
CIE-LCH	lch(26.73, 69.42, 300.36°)
OKLab	oklab(38.28% 0.0052 -0.1733)
OKLCH	oklch(38.28% 0.173 271.7)
XYZ	xyz(8.0158, 4.9985, 32.4341)
Luminance	0.0500 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28309D #9D9528

analogous

#286A9D #28309D #5A289D

triadic

#28309D #9D2830 #309D28

tetradic

#28309D #9D286A #9D9528 #289D5A

square

#28309D #9D286A #9D9528 #289D5A

split-complementary

#28309D #9D5A28 #6A9D28

monochromatic

#0F123B #1C216C #28309D #3641CC #676FD8

Accessibility & contrast

On white

10.50

#28309D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#28309D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28309D

10.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28309D	#FFFFFF	#000000	##FFFFFF
##28309D	1.00	10.50	2.00	10.50
#FFFFFF	10.50	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0045A0

Deuteranopia (green-blind)

#003A9B

Tritanopia (blue-blind)

#004E62

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #28309d;
/* rgb */ color: rgb(40, 48, 157);
/* oklch */ color: oklch(38.3% 0.173 271.7);

Tailwind

colors: {
  custom: {
    50: '#7569bb',
    500: '#28309d',
    950: '#000000',
  },
}

SCSS

$custom: #28309d;
$custom-light: #7569bb;
$custom-dark: #000000;

JSON

{
  "hex": "#28309d",
  "rgb": {
    "r": 40,
    "g": 48,
    "b": 157
  },
  "hsl": {
    "h": 235.897,
    "s": 59.391,
    "l": 38.627
  },
  "oklch": {
    "l": 0.38276,
    "c": 0.17334,
    "h": 271.7
  },
  "luminance": 0.04999
}

Semantic roles & 50–950 ramp

primary

#28309D

secondary

#BEB862

accent

#D845E3

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #28309D

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

Preview Lab → · Contrast checker → · Palette generator →