#28539F#28539F

#28539F is a mid, vivid blue. Relative luminance 0.091; OKLCH L 45.5% C 0.133 H 260.8°. Best body text is #FFFFFF at 7.43:1 contrast (WCAG AA passes).

Color values

HEX	#28539F
RGB	rgb(40, 83, 159)
HSL	hsl(218, 60%, 39%)
HSV	hsv(218, 75%, 62%)
CMYK	cmyk(74.8%, 47.8%, 0%, 37.6%)
CIE-LAB	lab(36.25, 12.57, -45.62)
CIE-LCH	lch(36.25, 47.32, 285.40°)
OKLab	oklab(45.45% -0.0211 -0.1309)
OKLCH	oklch(45.45% 0.133 260.8)
XYZ	xyz(10.2241, 9.1397, 34.0195)
Luminance	0.0914 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28539F #9F7428

analogous

#288F9F #28539F #38289F

triadic

#28539F #9F2853 #539F28

tetradic

#28539F #9F288F #9F7428 #289F38

square

#28539F #9F288F #9F7428 #289F38

split-complementary

#28539F #9F3828 #8F9F28

monochromatic

#0F203D #1C396E #28539F #376DCD #6891D9

Accessibility & contrast

On white

7.43

#28539F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#28539F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28539F

7.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28539F	#FFFFFF	#000000	##FFFFFF
##28539F	1.00	7.43	2.83	7.43
#FFFFFF	7.43	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A5BA2

Deuteranopia (green-blind)

#0B509D

Tritanopia (blue-blind)

#006571

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #28539f;
/* rgb */ color: rgb(40, 83, 159);
/* oklch */ color: oklch(45.5% 0.133 260.8);

Tailwind

colors: {
  custom: {
    50: '#7382bc',
    500: '#28539f',
    950: '#000000',
  },
}

SCSS

$custom: #28539f;
$custom-light: #7382bc;
$custom-dark: #000000;

JSON

{
  "hex": "#28539f",
  "rgb": {
    "r": 40,
    "g": 83,
    "b": 159
  },
  "hsl": {
    "h": 218.319,
    "s": 59.799,
    "l": 39.02
  },
  "oklch": {
    "l": 0.45451,
    "c": 0.13258,
    "h": 260.8
  },
  "luminance": 0.09141
}

Semantic roles & 50–950 ramp

primary

#28539F

secondary

#BF9E64

accent

#AA45E3

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #28539F

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

Preview Lab → · Contrast checker → · Palette generator →