#28299B#28299B

#28299B is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.9% C 0.178 H 273.0°. Best body text is #FFFFFF at 11.17:1 contrast (WCAG AA passes).

Color values

HEX	#28299B
RGB	rgb(40, 41, 155)
HSL	hsl(239, 59%, 38%)
HSV	hsv(239, 74%, 61%)
CMYK	cmyk(74.2%, 73.5%, 0%, 39.2%)
CIE-LAB	lab(24.96, 38.69, -61.59)
CIE-LCH	lch(24.96, 72.73, 302.13°)
OKLab	oklab(36.94% 0.0094 -0.1782)
OKLCH	oklch(36.94% 0.178 273)
XYZ	xyz(7.5824, 4.4028, 31.4542)
Luminance	0.0440 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28299B #9B9A28

analogous

#28629B #28299B #60289B

triadic

#28299B #9B2829 #299B28

tetradic

#28299B #9B2862 #9B9A28 #289B60

square

#28299B #9B2862 #9B9A28 #289B60

split-complementary

#28299B #9B6028 #629B28

monochromatic

#0F0F3A #1B1C6A #28299B #3537CB #6667D7

Accessibility & contrast

On white

11.17

#28299B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#28299B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28299B

11.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28299B	#FFFFFF	#000000	##FFFFFF
##28299B	1.00	11.17	1.88	11.17
#FFFFFF	11.17	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00419E

Deuteranopia (green-blind)

#003699

Tritanopia (blue-blind)

#00495F

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #28299b;
/* rgb */ color: rgb(40, 41, 155);
/* oklch */ color: oklch(36.9% 0.178 273.0);

Tailwind

colors: {
  custom: {
    50: '#7564ba',
    500: '#28299b',
    950: '#000000',
  },
}

SCSS

$custom: #28299b;
$custom-light: #7564ba;
$custom-dark: #000000;

JSON

{
  "hex": "#28299b",
  "rgb": {
    "r": 40,
    "g": 41,
    "b": 155
  },
  "hsl": {
    "h": 239.478,
    "s": 58.974,
    "l": 38.235
  },
  "oklch": {
    "l": 0.36944,
    "c": 0.17843,
    "h": 273
  },
  "luminance": 0.04404
}

Semantic roles & 50–950 ramp

primary

#28299B

secondary

#BDBD61

accent

#E146E2

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0512

muted

#7C7A81

Preview Lab

Preview with #28299B

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

Preview Lab → · Contrast checker → · Palette generator →