#28317E#28317E

#28317E is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.5% C 0.129 H 272.9°. Best body text is #FFFFFF at 11.47:1 contrast (WCAG AA passes).

Color values

HEX	#28317E
RGB	rgb(40, 49, 126)
HSL	hsl(234, 52%, 33%)
HSV	hsv(234, 68%, 49%)
CMYK	cmyk(68.3%, 61.1%, 0%, 50.6%)
CIE-LAB	lab(24.17, 22.99, -44.87)
CIE-LCH	lch(24.17, 50.41, 297.13°)
OKLab	oklab(35.54% 0.0065 -0.1292)
OKLCH	oklch(35.54% 0.129 272.9)
XYZ	xyz(5.7380, 4.1536, 20.2340)
Luminance	0.0415 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28317E #7E7528

analogous

#285C7E #28317E #4A287E

triadic

#28317E #7E2831 #317E28

tetradic

#28317E #7E285C #7E7528 #287E4A

square

#28317E #7E285C #7E7528 #287E4A

split-complementary

#28317E #7E4A28 #5C7E28

monochromatic

#0B0D21 #191F50 #28317E #3743AC #5763CA

Accessibility & contrast

On white

11.47

#28317E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#28317E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28317E

11.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28317E	#FFFFFF	#000000	##FFFFFF
##28317E	1.00	11.47	1.83	11.47
#FFFFFF	11.47	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D81

Deuteranopia (green-blind)

#00367C

Tritanopia (blue-blind)

#004452

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #28317e;
/* rgb */ color: rgb(40, 49, 126);
/* oklch */ color: oklch(35.5% 0.129 272.9);

Tailwind

colors: {
  custom: {
    50: '#6d69a4',
    500: '#28317e',
    950: '#000000',
  },
}

SCSS

$custom: #28317e;
$custom-light: #6d69a4;
$custom-dark: #000000;

JSON

{
  "hex": "#28317e",
  "rgb": {
    "r": 40,
    "g": 49,
    "b": 126
  },
  "hsl": {
    "h": 233.721,
    "s": 51.807,
    "l": 32.549
  },
  "oklch": {
    "l": 0.35537,
    "c": 0.12937,
    "h": 272.9
  },
  "luminance": 0.04154
}

Semantic roles & 50–950 ramp

primary

#28317E

secondary

#AFA553

accent

#CC4DDB

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#08060F

muted

#7A7A7F

Preview Lab

Preview with #28317E

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

Preview Lab → · Contrast checker → · Palette generator →