#28319B#28319B

#28319B is a dark, vivid blue. Relative luminance 0.050; OKLCH L 38.2% C 0.170 H 271.6°. Best body text is #FFFFFF at 10.49:1 contrast (WCAG AA passes).

Color values

HEX	#28319B
RGB	rgb(40, 49, 155)
HSL	hsl(235, 59%, 38%)
HSV	hsv(235, 74%, 61%)
CMYK	cmyk(74.2%, 68.4%, 0%, 39.2%)
CIE-LAB	lab(26.77, 33.73, -58.61)
CIE-LCH	lch(26.77, 67.62, 299.92°)
OKLab	oklab(38.25% 0.0048 -0.1695)
OKLCH	oklch(38.25% 0.17 271.6)
XYZ	xyz(7.8878, 5.0135, 31.5560)
Luminance	0.0501 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28319B #9B9228

analogous

#286A9B #28319B #58289B

triadic

#28319B #9B2831 #319B28

tetradic

#28319B #9B286A #9B9228 #289B58

square

#28319B #9B286A #9B9228 #289B58

split-complementary

#28319B #9B5828 #6A9B28

monochromatic

#0F123A #1B226A #28319B #3541CB #666FD7

Accessibility & contrast

On white

10.49

#28319B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#28319B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28319B

10.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28319B	#FFFFFF	#000000	##FFFFFF
##28319B	1.00	10.49	2.00	10.49
#FFFFFF	10.49	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00459E

Deuteranopia (green-blind)

#003A99

Tritanopia (blue-blind)

#004E62

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #28319b;
/* rgb */ color: rgb(40, 49, 155);
/* oklch */ color: oklch(38.2% 0.170 271.6);

Tailwind

colors: {
  custom: {
    50: '#7469b9',
    500: '#28319b',
    950: '#000000',
  },
}

SCSS

$custom: #28319b;
$custom-light: #7469b9;
$custom-dark: #000000;

JSON

{
  "hex": "#28319b",
  "rgb": {
    "r": 40,
    "g": 49,
    "b": 155
  },
  "hsl": {
    "h": 235.304,
    "s": 58.974,
    "l": 38.235
  },
  "oklch": {
    "l": 0.38249,
    "c": 0.16956,
    "h": 271.6
  },
  "luminance": 0.05014
}

Semantic roles & 50–950 ramp

primary

#28319B

secondary

#BDB661

accent

#D646E2

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#090612

muted

#7B7A81

Preview Lab

Preview with #28319B

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

Preview Lab → · Contrast checker → · Palette generator →