#28539E#28539E

#28539E is a mid, vivid blue. Relative luminance 0.091; OKLCH L 45.4% C 0.131 H 260.7°. Best body text is #FFFFFF at 7.44:1 contrast (WCAG AA passes).

Color values

HEX	#28539E
RGB	rgb(40, 83, 158)
HSL	hsl(218, 60%, 39%)
HSV	hsv(218, 75%, 62%)
CMYK	cmyk(74.7%, 47.5%, 0%, 38%)
CIE-LAB	lab(36.19, 12.18, -45.13)
CIE-LCH	lch(36.19, 46.74, 285.11°)
OKLab	oklab(45.38% -0.0213 -0.1294)
OKLCH	oklch(45.38% 0.131 260.7)
XYZ	xyz(10.1377, 9.1051, 33.5643)
Luminance	0.0911 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28539E #9E7328

analogous

#288E9E #28539E #38289E

triadic

#28539E #9E2853 #539E28

tetradic

#28539E #9E288E #9E7328 #289E38

square

#28539E #9E288E #9E7328 #289E38

split-complementary

#28539E #9E3828 #8E9E28

monochromatic

#0F203C #1C396D #28539E #376DCC #6891D9

Accessibility & contrast

On white

7.44

#28539E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.82

#28539E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28539E

7.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28539E	#FFFFFF	#000000	##FFFFFF
##28539E	1.00	7.44	2.82	7.44
#FFFFFF	7.44	1.00	21.00	1.00
#000000	2.82	21.00	1.00	21.00
##FFFFFF	7.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B5BA1

Deuteranopia (green-blind)

#0E509C

Tritanopia (blue-blind)

#006571

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #28539e;
/* rgb */ color: rgb(40, 83, 158);
/* oklch */ color: oklch(45.4% 0.131 260.7);

Tailwind

colors: {
  custom: {
    50: '#7282bb',
    500: '#28539e',
    950: '#000000',
  },
}

SCSS

$custom: #28539e;
$custom-light: #7282bb;
$custom-dark: #000000;

JSON

{
  "hex": "#28539e",
  "rgb": {
    "r": 40,
    "g": 83,
    "b": 158
  },
  "hsl": {
    "h": 218.136,
    "s": 59.596,
    "l": 38.824
  },
  "oklch": {
    "l": 0.4538,
    "c": 0.13117,
    "h": 260.7
  },
  "luminance": 0.09106
}

Semantic roles & 50–950 ramp

primary

#28539E

secondary

#BF9D63

accent

#A945E3

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #28539E

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

Preview Lab → · Contrast checker → · Palette generator →