#28478B#28478B

#28478B is a dark, moderate blue. Relative luminance 0.068; OKLCH L 41.3% C 0.119 H 263.6°. Best body text is #FFFFFF at 8.88:1 contrast (WCAG AA passes).

Color values

HEX	#28478B
RGB	rgb(40, 71, 139)
HSL	hsl(221, 55%, 35%)
HSV	hsv(221, 71%, 55%)
CMYK	cmyk(71.2%, 48.9%, 0%, 45.5%)
CIE-LAB	lab(31.40, 12.87, -41.28)
CIE-LCH	lch(31.40, 43.24, 287.31°)
OKLab	oklab(41.3% -0.0133 -0.1183)
OKLCH	oklch(41.3% 0.119 263.6)
XYZ	xyz(7.7869, 6.8209, 25.3273)
Luminance	0.0682 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28478B #8B6C28

analogous

#28788B #28478B #3A288B

triadic

#28478B #8B2847 #478B28

tetradic

#28478B #8B2878 #8B6C28 #288B3A

square

#28478B #8B2878 #8B6C28 #288B3A

split-complementary

#28478B #8B3A28 #788B28

monochromatic

#0D162C #1A2F5B #28478B #365FBB #5D81D0

Accessibility & contrast

On white

8.88

#28478B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#28478B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28478B

8.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28478B	#FFFFFF	#000000	##FFFFFF
##28478B	1.00	8.88	2.36	8.88
#FFFFFF	8.88	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#234F8E

Deuteranopia (green-blind)

#0A468A

Tritanopia (blue-blind)

#005762

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #28478b;
/* rgb */ color: rgb(40, 71, 139);
/* oklch */ color: oklch(41.3% 0.119 263.6);

Tailwind

colors: {
  custom: {
    50: '#6f79ad',
    500: '#28478b',
    950: '#000000',
  },
}

SCSS

$custom: #28478b;
$custom-light: #6f79ad;
$custom-dark: #000000;

JSON

{
  "hex": "#28478b",
  "rgb": {
    "r": 40,
    "g": 71,
    "b": 139
  },
  "hsl": {
    "h": 221.212,
    "s": 55.307,
    "l": 35.098
  },
  "oklch": {
    "l": 0.41298,
    "c": 0.11907,
    "h": 263.6
  },
  "luminance": 0.06822
}

Semantic roles & 50–950 ramp

primary

#28478B

secondary

#B69959

accent

#B049DF

background

#F7F7FA

surface

#EDEDF4

border

#C8C8CE

text

#080910

muted

#7B7B7F

Preview Lab

Preview with #28478B

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

Preview Lab → · Contrast checker → · Palette generator →