#28279B#28279B

#28279B is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.6% C 0.180 H 273.3°. Best body text is #FFFFFF at 11.33:1 contrast (WCAG AA passes).

Color values

HEX	#28279B
RGB	rgb(40, 39, 155)
HSL	hsl(241, 60%, 38%)
HSV	hsv(241, 75%, 61%)
CMYK	cmyk(74.2%, 74.8%, 0%, 39.2%)
CIE-LAB	lab(24.54, 39.87, -62.29)
CIE-LCH	lch(24.54, 73.95, 302.62°)
OKLab	oklab(36.64% 0.0105 -0.1802)
OKLCH	oklch(36.64% 0.181 273.3)
XYZ	xyz(7.5150, 4.2680, 31.4317)
Luminance	0.0427 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28279B #9A9B27

analogous

#27609B #28279B #62279B

triadic

#28279B #9B2827 #279B28

tetradic

#28279B #9B2760 #9A9B27 #279B62

square

#28279B #9B2760 #9A9B27 #279B62

split-complementary

#28279B #9B6227 #609B27

monochromatic

#0F0E39 #1B1B6A #28279B #3533CC #6564D8

Accessibility & contrast

On white

11.33

#28279B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#28279B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28279B

11.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28279B	#FFFFFF	#000000	##FFFFFF
##28279B	1.00	11.33	1.85	11.33
#FFFFFF	11.33	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00409E

Deuteranopia (green-blind)

#003599

Tritanopia (blue-blind)

#00485F

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #28279b;
/* rgb */ color: rgb(40, 39, 155);
/* oklch */ color: oklch(36.6% 0.180 273.3);

Tailwind

colors: {
  custom: {
    50: '#7563ba',
    500: '#28279b',
    950: '#000000',
  },
}

SCSS

$custom: #28279b;
$custom-light: #7563ba;
$custom-dark: #000000;

JSON

{
  "hex": "#28279b",
  "rgb": {
    "r": 40,
    "g": 39,
    "b": 155
  },
  "hsl": {
    "h": 240.517,
    "s": 59.794,
    "l": 38.039
  },
  "oklch": {
    "l": 0.36643,
    "c": 0.1805,
    "h": 273.3
  },
  "luminance": 0.04269
}

Semantic roles & 50–950 ramp

primary

#28279B

secondary

#BDBE60

accent

#E345E2

background

#F7F5FB

surface

#EEEAF6

border

#C9C6D0

text

#0A0512

muted

#7C7981

Preview Lab

Preview with #28279B

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

Preview Lab → · Contrast checker → · Palette generator →