#28179E#28179E

#28179E is a dark, vivid blue. Relative luminance 0.035; OKLCH L 35.0% C 0.198 H 274.7°. Best body text is #FFFFFF at 12.31:1 contrast (WCAG AA passes).

Color values

HEX	#28179E
RGB	rgb(40, 23, 158)
HSL	hsl(248, 75%, 35%)
HSV	hsv(248, 85%, 62%)
CMYK	cmyk(74.7%, 85.4%, 0%, 38%)
CIE-LAB	lab(22.06, 48.98, -68.23)
CIE-LCH	lch(22.06, 83.99, 305.68°)
OKLab	oklab(35.01% 0.0161 -0.1972)
OKLCH	oklch(35.01% 0.198 274.7)
XYZ	xyz(7.3510, 3.5318, 32.6354)
Luminance	0.0353 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28179E #8D9E17

analogous

#17499E #28179E #6C179E

triadic

#28179E #9E2817 #179E28

tetradic

#28179E #9E1749 #8D9E17 #179E6C

square

#28179E #9E1749 #8D9E17 #179E6C

split-complementary

#28179E #9E6C17 #499E17

monochromatic

#0D0733 #1A0F69 #28179E #361FD3 #5E4BE5

Accessibility & contrast

On white

12.31

#28179E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#28179E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28179E

12.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28179E	#FFFFFF	#000000	##FFFFFF
##28179E	1.00	12.31	1.71	12.31
#FFFFFF	12.31	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003BA2

Deuteranopia (green-blind)

#002F9C

Tritanopia (blue-blind)

#00435D

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #28179e;
/* rgb */ color: rgb(40, 23, 158);
/* oklch */ color: oklch(35.0% 0.198 274.7);

Tailwind

colors: {
  custom: {
    50: '#775abc',
    500: '#28179e',
    950: '#000000',
  },
}

SCSS

$custom: #28179e;
$custom-light: #775abc;
$custom-dark: #000000;

JSON

{
  "hex": "#28179e",
  "rgb": {
    "r": 40,
    "g": 23,
    "b": 158
  },
  "hsl": {
    "h": 247.556,
    "s": 74.586,
    "l": 35.49
  },
  "oklch": {
    "l": 0.35011,
    "c": 0.19788,
    "h": 274.7
  },
  "luminance": 0.03533
}

Semantic roles & 50–950 ramp

primary

#28179E

secondary

#B7C64A

accent

#F137DA

background

#F8F5FB

surface

#EFE9F7

border

#CAC5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #28179E

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

Preview Lab → · Contrast checker → · Palette generator →