#28318C#28318C

#28318C is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.8% C 0.149 H 272.3°. Best body text is #FFFFFF at 11.01:1 contrast (WCAG AA passes).

Color values

HEX	#28318C
RGB	rgb(40, 49, 140)
HSL	hsl(235, 56%, 35%)
HSV	hsv(235, 71%, 55%)
CMYK	cmyk(71.4%, 65%, 0%, 45.1%)
CIE-LAB	lab(25.38, 28.22, -51.65)
CIE-LCH	lch(25.38, 58.86, 298.65°)
OKLab	oklab(36.81% 0.006 -0.1491)
OKLCH	oklch(36.81% 0.149 272.3)
XYZ	xyz(6.7054, 4.5405, 25.3289)
Luminance	0.0454 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28318C #8C8328

analogous

#28638C #28318C #51288C

triadic

#28318C #8C2831 #318C28

tetradic

#28318C #8C2863 #8C8328 #288C51

square

#28318C #8C2863 #8C8328 #288C51

split-complementary

#28318C #8C5128 #638C28

monochromatic

#0D102D #1A205C #28318C #3642BC #5E68D1

Accessibility & contrast

On white

11.01

#28318C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#28318C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28318C

11.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28318C	#FFFFFF	#000000	##FFFFFF
##28318C	1.00	11.01	1.91	11.01
#FFFFFF	11.01	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	11.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00418F

Deuteranopia (green-blind)

#00388A

Tritanopia (blue-blind)

#004859

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #28318c;
/* rgb */ color: rgb(40, 49, 140);
/* oklch */ color: oklch(36.8% 0.149 272.3);

Tailwind

colors: {
  custom: {
    50: '#7069ae',
    500: '#28318c',
    950: '#000000',
  },
}

SCSS

$custom: #28318c;
$custom-light: #7069ae;
$custom-dark: #000000;

JSON

{
  "hex": "#28318c",
  "rgb": {
    "r": 40,
    "g": 49,
    "b": 140
  },
  "hsl": {
    "h": 234.6,
    "s": 55.556,
    "l": 35.294
  },
  "oklch": {
    "l": 0.36808,
    "c": 0.14924,
    "h": 272.3
  },
  "luminance": 0.04541
}

Semantic roles & 50–950 ramp

primary

#28318C

secondary

#B6AE5A

accent

#D149DF

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#090610

muted

#7B7A7F

Preview Lab

Preview with #28318C

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

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