#28177E#28177E

#28177E is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.3% C 0.160 H 279.3°. Best body text is #FFFFFF at 13.87:1 contrast (WCAG AA passes).

Color values

HEX	#28177E
RGB	rgb(40, 23, 126)
HSL	hsl(250, 69%, 29%)
HSV	hsv(250, 82%, 49%)
CMYK	cmyk(68.3%, 81.7%, 0%, 50.6%)
CIE-LAB	lab(18.23, 39.12, -54.61)
CIE-LCH	lch(18.23, 67.18, 305.62°)
OKLab	oklab(31.26% 0.0258 -0.1577)
OKLCH	oklch(31.26% 0.16 279.3)
XYZ	xyz(4.9462, 2.5699, 19.9700)
Luminance	0.0257 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28177E #6D7E17

analogous

#173A7E #28177E #5C177E

triadic

#28177E #7E2817 #177E28

tetradic

#28177E #7E173A #6D7E17 #177E5C

square

#28177E #7E173A #6D7E17 #177E5C

split-complementary

#28177E #7E5C17 #3A7E17

monochromatic

#08051A #180E4A #28177E #3820B2 #5035DA

Accessibility & contrast

On white

13.87

#28177E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#28177E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28177E

13.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28177E	#FFFFFF	#000000	##FFFFFF
##28177E	1.00	13.87	1.51	13.87
#FFFFFF	13.87	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003081

Deuteranopia (green-blind)

#00287C

Tritanopia (blue-blind)

#00364B

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #28177e;
/* rgb */ color: rgb(40, 23, 126);
/* oklch */ color: oklch(31.3% 0.160 279.3);

Tailwind

colors: {
  custom: {
    50: '#7057a5',
    500: '#28177e',
    950: '#000000',
  },
}

SCSS

$custom: #28177e;
$custom-light: #7057a5;
$custom-dark: #000000;

JSON

{
  "hex": "#28177e",
  "rgb": {
    "r": 40,
    "g": 23,
    "b": 126
  },
  "hsl": {
    "h": 249.903,
    "s": 69.128,
    "l": 29.216
  },
  "oklch": {
    "l": 0.31255,
    "c": 0.1598,
    "h": 279.3
  },
  "luminance": 0.0257
}

Semantic roles & 50–950 ramp

primary

#28177E

secondary

#9FB33E

accent

#EC3CCF

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08030F

muted

#7B787F

Preview Lab

Preview with #28177E

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

Preview Lab → · Contrast checker → · Palette generator →