#28528B#28528B

#28528B is a dark, moderate cyan. Relative luminance 0.084; OKLCH L 43.8% C 0.105 H 256.7°. Best body text is #FFFFFF at 7.87:1 contrast (WCAG AA passes).

Color values

HEX	#28528B
RGB	rgb(40, 82, 139)
HSL	hsl(215, 55%, 35%)
HSV	hsv(215, 71%, 55%)
CMYK	cmyk(71.2%, 41%, 0%, 45.5%)
CIE-LAB	lab(34.70, 5.51, -36.00)
CIE-LCH	lch(34.70, 36.42, 278.70°)
OKLab	oklab(43.85% -0.0242 -0.1026)
OKLCH	oklch(43.85% 0.105 256.7)
XYZ	xyz(8.5509, 8.3489, 25.5819)
Luminance	0.0835 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28528B #8B6128

analogous

#28848B #28528B #2F288B

triadic

#28528B #8B2852 #528B28

tetradic

#28528B #8B2884 #8B6128 #288B2F

square

#28528B #8B2884 #8B6128 #288B2F

split-complementary

#28528B #8B2F28 #848B28

monochromatic

#0D1A2C #1A365B #28528B #366EBB #5D8ED0

Accessibility & contrast

On white

7.87

#28528B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#28528B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28528B

7.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28528B	#FFFFFF	#000000	##FFFFFF
##28528B	1.00	7.87	2.67	7.87
#FFFFFF	7.87	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#38578D

Deuteranopia (green-blind)

#284D8A

Tritanopia (blue-blind)

#005F67

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #28528b;
/* rgb */ color: rgb(40, 82, 139);
/* oklch */ color: oklch(43.8% 0.105 256.7);

Tailwind

colors: {
  custom: {
    50: '#6e82ad',
    500: '#28528b',
    950: '#000000',
  },
}

SCSS

$custom: #28528b;
$custom-light: #6e82ad;
$custom-dark: #000000;

JSON

{
  "hex": "#28528b",
  "rgb": {
    "r": 40,
    "g": 82,
    "b": 139
  },
  "hsl": {
    "h": 214.545,
    "s": 55.307,
    "l": 35.098
  },
  "oklch": {
    "l": 0.43847,
    "c": 0.10544,
    "h": 256.7
  },
  "luminance": 0.0835
}

Semantic roles & 50–950 ramp

primary

#28528B

secondary

#B68E59

accent

#9F49DF

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#080A10

muted

#7B7C7F

Preview Lab

Preview with #28528B

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

Preview Lab → · Contrast checker → · Palette generator →