#28529B#28529B

#28529B is a dark, vivid blue. Relative luminance 0.089; OKLCH L 44.9% C 0.128 H 260.6°. Best body text is #FFFFFF at 7.58:1 contrast (WCAG AA passes).

Color values

HEX	#28529B
RGB	rgb(40, 82, 155)
HSL	hsl(218, 59%, 38%)
HSV	hsv(218, 74%, 61%)
CMYK	cmyk(74.2%, 47.1%, 0%, 39.2%)
CIE-LAB	lab(35.70, 11.68, -44.11)
CIE-LCH	lch(35.70, 45.63, 284.83°)
OKLab	oklab(44.94% -0.0209 -0.1264)
OKLCH	oklch(44.94% 0.128 260.6)
XYZ	xyz(9.8066, 8.8512, 32.1956)
Luminance	0.0885 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28529B #9B7128

analogous

#288B9B #28529B #37289B

triadic

#28529B #9B2852 #529B28

tetradic

#28529B #9B288B #9B7128 #289B37

square

#28529B #9B288B #9B7128 #289B37

split-complementary

#28529B #9B3728 #8B9B28

monochromatic

#0F1F3A #1B386A #28529B #356CCB #668FD7

Accessibility & contrast

On white

7.58

#28529B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.77

#28529B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28529B

7.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28529B	#FFFFFF	#000000	##FFFFFF
##28529B	1.00	7.58	2.77	7.58
#FFFFFF	7.58	1.00	21.00	1.00
#000000	2.77	21.00	1.00	21.00
##FFFFFF	7.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C5A9E

Deuteranopia (green-blind)

#114F9A

Tritanopia (blue-blind)

#00636F

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #28529b;
/* rgb */ color: rgb(40, 82, 155);
/* oklch */ color: oklch(44.9% 0.128 260.6);

Tailwind

colors: {
  custom: {
    50: '#7282b9',
    500: '#28529b',
    950: '#000000',
  },
}

SCSS

$custom: #28529b;
$custom-light: #7282b9;
$custom-dark: #000000;

JSON

{
  "hex": "#28529b",
  "rgb": {
    "r": 40,
    "g": 82,
    "b": 155
  },
  "hsl": {
    "h": 218.087,
    "s": 58.974,
    "l": 38.235
  },
  "oklch": {
    "l": 0.4494,
    "c": 0.12817,
    "h": 260.6
  },
  "luminance": 0.08852
}

Semantic roles & 50–950 ramp

primary

#28529B

secondary

#BD9C61

accent

#A946E2

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A11

muted

#7B7C80

Preview Lab

Preview with #28529B

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

Preview Lab → · Contrast checker → · Palette generator →