#28478C#28478C

#28478C is a dark, vivid blue. Relative luminance 0.069; OKLCH L 41.4% C 0.121 H 263.8°. Best body text is #FFFFFF at 8.86:1 contrast (WCAG AA passes).

Color values

HEX	#28478C
RGB	rgb(40, 71, 140)
HSL	hsl(221, 56%, 35%)
HSV	hsv(221, 71%, 55%)
CMYK	cmyk(71.4%, 49.3%, 0%, 45.1%)
CIE-LAB	lab(31.46, 13.26, -41.79)
CIE-LCH	lch(31.46, 43.84, 287.60°)
OKLab	oklab(41.37% -0.0131 -0.1198)
OKLCH	oklch(41.37% 0.121 263.8)
XYZ	xyz(7.8603, 6.8502, 25.7138)
Luminance	0.0685 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28478C #8C6D28

analogous

#28798C #28478C #3B288C

triadic

#28478C #8C2847 #478C28

tetradic

#28478C #8C2879 #8C6D28 #288C3B

square

#28478C #8C2879 #8C6D28 #288C3B

split-complementary

#28478C #8C3B28 #798C28

monochromatic

#0D172D #1A2F5C #28478C #365FBC #5E81D1

Accessibility & contrast

On white

8.86

#28478C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#28478C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28478C

8.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28478C	#FFFFFF	#000000	##FFFFFF
##28478C	1.00	8.86	2.37	8.86
#FFFFFF	8.86	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#224F8F

Deuteranopia (green-blind)

#07468B

Tritanopia (blue-blind)

#005762

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #28478c;
/* rgb */ color: rgb(40, 71, 140);
/* oklch */ color: oklch(41.4% 0.121 263.8);

Tailwind

colors: {
  custom: {
    50: '#6f79ae',
    500: '#28478c',
    950: '#000000',
  },
}

SCSS

$custom: #28478c;
$custom-light: #6f79ae;
$custom-dark: #000000;

JSON

{
  "hex": "#28478c",
  "rgb": {
    "r": 40,
    "g": 71,
    "b": 140
  },
  "hsl": {
    "h": 221.4,
    "s": 55.556,
    "l": 35.294
  },
  "oklch": {
    "l": 0.41371,
    "c": 0.12054,
    "h": 263.8
  },
  "luminance": 0.06851
}

Semantic roles & 50–950 ramp

primary

#28478C

secondary

#B69A5A

accent

#B049DF

background

#F7F7FA

surface

#EDEDF4

border

#C8C8CE

text

#080910

muted

#7B7B7F

Preview Lab

Preview with #28478C

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

Preview Lab → · Contrast checker → · Palette generator →