#28539D#28539D

#28539D is a mid, vivid blue. Relative luminance 0.091; OKLCH L 45.3% C 0.130 H 260.5°. Best body text is #FFFFFF at 7.46:1 contrast (WCAG AA passes).

Color values

HEX	#28539D
RGB	rgb(40, 83, 157)
HSL	hsl(218, 59%, 39%)
HSV	hsv(218, 75%, 62%)
CMYK	cmyk(74.5%, 47.1%, 0%, 38.4%)
CIE-LAB	lab(36.12, 11.79, -44.63)
CIE-LCH	lch(36.12, 46.17, 284.80°)
OKLab	oklab(45.31% -0.0215 -0.128)
OKLCH	oklch(45.31% 0.13 260.5)
XYZ	xyz(10.0519, 9.0708, 33.1128)
Luminance	0.0907 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28539D #9D7228

analogous

#288D9D #28539D #37289D

triadic

#28539D #9D2853 #539D28

tetradic

#28539D #9D288D #9D7228 #289D37

square

#28539D #9D288D #9D7228 #289D37

split-complementary

#28539D #9D3728 #8D9D28

monochromatic

#0F1F3B #1C396C #28539D #366DCC #6791D8

Accessibility & contrast

On white

7.46

#28539D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#28539D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28539D

7.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28539D	#FFFFFF	#000000	##FFFFFF
##28539D	1.00	7.46	2.81	7.46
#FFFFFF	7.46	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C5BA0

Deuteranopia (green-blind)

#10509C

Tritanopia (blue-blind)

#006470

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #28539d;
/* rgb */ color: rgb(40, 83, 157);
/* oklch */ color: oklch(45.3% 0.130 260.5);

Tailwind

colors: {
  custom: {
    50: '#7282ba',
    500: '#28539d',
    950: '#000000',
  },
}

SCSS

$custom: #28539d;
$custom-light: #7282ba;
$custom-dark: #000000;

JSON

{
  "hex": "#28539d",
  "rgb": {
    "r": 40,
    "g": 83,
    "b": 157
  },
  "hsl": {
    "h": 217.949,
    "s": 59.391,
    "l": 38.627
  },
  "oklch": {
    "l": 0.45308,
    "c": 0.12976,
    "h": 260.5
  },
  "luminance": 0.09072
}

Semantic roles & 50–950 ramp

primary

#28539D

secondary

#BE9D62

accent

#A945E3

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #28539D

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

Preview Lab → · Contrast checker → · Palette generator →