#28559B#28559B

#28559B is a mid, vivid blue. Relative luminance 0.093; OKLCH L 45.6% C 0.124 H 259.0°. Best body text is #FFFFFF at 7.33:1 contrast (WCAG AA passes).

Color values

HEX	#28559B
RGB	rgb(40, 85, 155)
HSL	hsl(217, 59%, 38%)
HSV	hsv(217, 74%, 61%)
CMYK	cmyk(74.2%, 45.2%, 0%, 39.2%)
CIE-LAB	lab(36.58, 9.70, -42.69)
CIE-LCH	lch(36.58, 43.78, 282.80°)
OKLab	oklab(45.62% -0.0237 -0.1222)
OKLCH	oklch(45.62% 0.124 259)
XYZ	xyz(10.0378, 9.3136, 32.2727)
Luminance	0.0931 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28559B #9B6E28

analogous

#288E9B #28559B #35289B

triadic

#28559B #9B2855 #559B28

tetradic

#28559B #9B288E #9B6E28 #289B35

square

#28559B #9B288E #9B6E28 #289B35

split-complementary

#28559B #9B3528 #8E9B28

monochromatic

#0F203A #1B3A6A #28559B #3570CB #6692D7

Accessibility & contrast

On white

7.33

#28559B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.86

#28559B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28559B

7.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28559B	#FFFFFF	#000000	##FFFFFF
##28559B	1.00	7.33	2.86	7.33
#FFFFFF	7.33	1.00	21.00	1.00
#000000	2.86	21.00	1.00	21.00
##FFFFFF	7.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#325C9E

Deuteranopia (green-blind)

#1B519A

Tritanopia (blue-blind)

#006570

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #28559b;
/* rgb */ color: rgb(40, 85, 155);
/* oklch */ color: oklch(45.6% 0.124 259.0);

Tailwind

colors: {
  custom: {
    50: '#7284b9',
    500: '#28559b',
    950: '#000000',
  },
}

SCSS

$custom: #28559b;
$custom-light: #7284b9;
$custom-dark: #000000;

JSON

{
  "hex": "#28559b",
  "rgb": {
    "r": 40,
    "g": 85,
    "b": 155
  },
  "hsl": {
    "h": 216.522,
    "s": 58.974,
    "l": 38.235
  },
  "oklch": {
    "l": 0.45622,
    "c": 0.12449,
    "h": 259
  },
  "luminance": 0.09315
}

Semantic roles & 50–950 ramp

primary

#28559B

secondary

#BD9961

accent

#A546E2

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#090A11

muted

#7B7C80

Preview Lab

Preview with #28559B

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

Preview Lab → · Contrast checker → · Palette generator →