#28528F#28528F

#28528F is a dark, moderate blue. Relative luminance 0.085; OKLCH L 44.1% C 0.111 H 257.9°. Best body text is #FFFFFF at 7.80:1 contrast (WCAG AA passes).

Color values

HEX	#28528F
RGB	rgb(40, 82, 143)
HSL	hsl(216, 56%, 36%)
HSV	hsv(216, 72%, 56%)
CMYK	cmyk(72%, 42.7%, 0%, 43.9%)
CIE-LAB	lab(34.94, 7.05, -38.06)
CIE-LCH	lch(34.94, 38.70, 280.49°)
OKLab	oklab(44.11% -0.0233 -0.1087)
OKLCH	oklch(44.11% 0.111 257.9)
XYZ	xyz(8.8485, 8.4679, 27.1494)
Luminance	0.0847 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28528F #8F6528

analogous

#28858F #28528F #31288F

triadic

#28528F #8F2852 #528F28

tetradic

#28528F #8F2885 #8F6528 #288F31

square

#28528F #8F2885 #8F6528 #288F31

split-complementary

#28528F #8F3128 #858F28

monochromatic

#0D1B2F #1B375F #28528F #356DBF #5F8ED2

Accessibility & contrast

On white

7.80

#28528F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#28528F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28528F

7.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28528F	#FFFFFF	#000000	##FFFFFF
##28528F	1.00	7.80	2.69	7.80
#FFFFFF	7.80	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#355791

Deuteranopia (green-blind)

#244E8E

Tritanopia (blue-blind)

#006069

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #28528f;
/* rgb */ color: rgb(40, 82, 143);
/* oklch */ color: oklch(44.1% 0.111 257.9);

Tailwind

colors: {
  custom: {
    50: '#6f82b0',
    500: '#28528f',
    950: '#000000',
  },
}

SCSS

$custom: #28528f;
$custom-light: #6f82b0;
$custom-dark: #000000;

JSON

{
  "hex": "#28528f",
  "rgb": {
    "r": 40,
    "g": 82,
    "b": 143
  },
  "hsl": {
    "h": 215.534,
    "s": 56.284,
    "l": 35.882
  },
  "oklch": {
    "l": 0.44111,
    "c": 0.11113,
    "h": 257.9
  },
  "luminance": 0.08469
}

Semantic roles & 50–950 ramp

primary

#28528F

secondary

#B8925B

accent

#A248E0

background

#F7F7FA

surface

#EDEEF5

border

#C8C9CF

text

#080A10

muted

#7B7C7F

Preview Lab

Preview with #28528F

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

Preview Lab → · Contrast checker → · Palette generator →