#28289B#28289B

#28289B is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.8% C 0.179 H 273.2°. Best body text is #FFFFFF at 11.25:1 contrast (WCAG AA passes).

Color values

HEX	#28289B
RGB	rgb(40, 40, 155)
HSL	hsl(240, 59%, 38%)
HSV	hsv(240, 74%, 61%)
CMYK	cmyk(74.2%, 74.2%, 0%, 39.2%)
CIE-LAB	lab(24.75, 39.28, -61.94)
CIE-LCH	lch(24.75, 73.35, 302.38°)
OKLab	oklab(36.79% 0.01 -0.1792)
OKLCH	oklch(36.79% 0.179 273.2)
XYZ	xyz(7.5483, 4.3345, 31.4428)
Luminance	0.0433 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28289B #9B9B28

analogous

#28619B #28289B #61289B

triadic

#28289B #9B2828 #289B28

tetradic

#28289B #9B2861 #9B9B28 #289B61

square

#28289B #9B2861 #9B9B28 #289B61

split-complementary

#28289B #9B6128 #619B28

monochromatic

#0F0F3A #1B1B6A #28289B #3535CB #6666D7

Accessibility & contrast

On white

11.25

#28289B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#28289B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28289B

11.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28289B	#FFFFFF	#000000	##FFFFFF
##28289B	1.00	11.25	1.87	11.25
#FFFFFF	11.25	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00409E

Deuteranopia (green-blind)

#003599

Tritanopia (blue-blind)

#00495F

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #28289b;
/* rgb */ color: rgb(40, 40, 155);
/* oklch */ color: oklch(36.8% 0.179 273.2);

Tailwind

colors: {
  custom: {
    50: '#7563ba',
    500: '#28289b',
    950: '#000000',
  },
}

SCSS

$custom: #28289b;
$custom-light: #7563ba;
$custom-dark: #000000;

JSON

{
  "hex": "#28289b",
  "rgb": {
    "r": 40,
    "g": 40,
    "b": 155
  },
  "hsl": {
    "h": 240,
    "s": 58.974,
    "l": 38.235
  },
  "oklch": {
    "l": 0.36792,
    "c": 0.17948,
    "h": 273.2
  },
  "luminance": 0.04335
}

Semantic roles & 50–950 ramp

primary

#28289B

secondary

#BDBD61

accent

#E246E2

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0512

muted

#7C7A81

Preview Lab

Preview with #28289B

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

Preview Lab → · Contrast checker → · Palette generator →