#28539C#28539C

#28539C is a mid, vivid blue. Relative luminance 0.090; OKLCH L 45.2% C 0.128 H 260.3°. Best body text is #FFFFFF at 7.48:1 contrast (WCAG AA passes).

Color values

HEX	#28539C
RGB	rgb(40, 83, 156)
HSL	hsl(218, 59%, 38%)
HSV	hsv(218, 74%, 61%)
CMYK	cmyk(74.4%, 46.8%, 0%, 38.8%)
CIE-LAB	lab(36.06, 11.41, -44.14)
CIE-LCH	lch(36.06, 45.59, 284.49°)
OKLab	oklab(45.24% -0.0217 -0.1265)
OKLCH	oklch(45.24% 0.128 260.3)
XYZ	xyz(9.9669, 9.0368, 32.6650)
Luminance	0.0904 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28539C #9C7128

analogous

#288D9C #28539C #37289C

triadic

#28539C #9C2853 #539C28

tetradic

#28539C #9C288D #9C7128 #289C37

square

#28539C #9C288D #9C7128 #289C37

split-complementary

#28539C #9C3728 #8D9C28

monochromatic

#0F1F3B #1C396B #28539C #366DCB #6791D8

Accessibility & contrast

On white

7.48

#28539C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#28539C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28539C

7.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28539C	#FFFFFF	#000000	##FFFFFF
##28539C	1.00	7.48	2.81	7.48
#FFFFFF	7.48	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D5B9F

Deuteranopia (green-blind)

#13509B

Tritanopia (blue-blind)

#006470

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #28539c;
/* rgb */ color: rgb(40, 83, 156);
/* oklch */ color: oklch(45.2% 0.128 260.3);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#28539c",
  "rgb": {
    "r": 40,
    "g": 83,
    "b": 156
  },
  "hsl": {
    "h": 217.759,
    "s": 59.184,
    "l": 38.431
  },
  "oklch": {
    "l": 0.45237,
    "c": 0.12835,
    "h": 260.3
  },
  "luminance": 0.09038
}

Semantic roles & 50–950 ramp

primary

#28539C

secondary

#BE9C62

accent

#A845E2

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A11

muted

#7B7C80

Preview Lab

Preview with #28539C

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

Preview Lab → · Contrast checker → · Palette generator →