#28187C#28187C

#28187C is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.2% C 0.156 H 279.5°. Best body text is #FFFFFF at 13.89:1 contrast (WCAG AA passes).

Color values

HEX	#28187C
RGB	rgb(40, 24, 124)
HSL	hsl(250, 68%, 29%)
HSV	hsv(250, 81%, 49%)
CMYK	cmyk(67.7%, 80.6%, 0%, 51.4%)
CIE-LAB	lab(18.18, 37.96, -53.42)
CIE-LCH	lch(18.18, 65.53, 305.40°)
OKLab	oklab(31.16% 0.0259 -0.1542)
OKLCH	oklch(31.16% 0.156 279.5)
XYZ	xyz(4.8386, 2.5592, 19.3039)
Luminance	0.0256 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28187C #6C7C18

analogous

#183A7C #28187C #5A187C

triadic

#28187C #7C2818 #187C28

tetradic

#28187C #7C183A #6C7C18 #187C5A

square

#28187C #7C183A #6C7C18 #187C5A

split-complementary

#28187C #7C5A18 #3A7C18

monochromatic

#08051A #170E49 #28187C #3922AF #5036D8

Accessibility & contrast

On white

13.89

#28187C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#28187C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28187C

13.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28187C	#FFFFFF	#000000	##FFFFFF
##28187C	1.00	13.89	1.51	13.89
#FFFFFF	13.89	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00307F

Deuteranopia (green-blind)

#00287A

Tritanopia (blue-blind)

#00364A

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #28187c;
/* rgb */ color: rgb(40, 24, 124);
/* oklch */ color: oklch(31.2% 0.156 279.5);

Tailwind

colors: {
  custom: {
    50: '#6f58a3',
    500: '#28187c',
    950: '#000000',
  },
}

SCSS

$custom: #28187c;
$custom-light: #6f58a3;
$custom-dark: #000000;

JSON

{
  "hex": "#28187c",
  "rgb": {
    "r": 40,
    "g": 24,
    "b": 124
  },
  "hsl": {
    "h": 249.6,
    "s": 67.568,
    "l": 29.02
  },
  "oklch": {
    "l": 0.31155,
    "c": 0.15638,
    "h": 279.5
  },
  "luminance": 0.0256
}

Semantic roles & 50–950 ramp

primary

#28187C

secondary

#9EB13F

accent

#EA3DCF

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08030F

muted

#7B787F

Preview Lab

Preview with #28187C

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

Preview Lab → · Contrast checker → · Palette generator →