#28509D#28509D

#28509D is a dark, vivid blue. Relative luminance 0.086; OKLCH L 44.6% C 0.134 H 261.9°. Best body text is #FFFFFF at 7.71:1 contrast (WCAG AA passes).

Color values

HEX	#28509D
RGB	rgb(40, 80, 157)
HSL	hsl(219, 59%, 39%)
HSV	hsv(219, 75%, 62%)
CMYK	cmyk(74.5%, 49%, 0%, 38.4%)
CIE-LAB	lab(35.25, 13.79, -46.04)
CIE-LCH	lch(35.25, 48.06, 286.68°)
OKLab	oklab(44.64% -0.0188 -0.1322)
OKLCH	oklch(44.64% 0.134 261.9)
XYZ	xyz(9.8274, 8.6217, 33.0380)
Luminance	0.0862 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28509D #9D7528

analogous

#288A9D #28509D #3A289D

triadic

#28509D #9D2850 #509D28

tetradic

#28509D #9D288A #9D7528 #289D3A

square

#28509D #9D288A #9D7528 #289D3A

split-complementary

#28509D #9D3A28 #8A9D28

monochromatic

#0F1E3B #1C376C #28509D #3669CC #678ED8

Accessibility & contrast

On white

7.71

#28509D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#28509D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28509D

7.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28509D	#FFFFFF	#000000	##FFFFFF
##28509D	1.00	7.71	2.72	7.71
#FFFFFF	7.71	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2559A0

Deuteranopia (green-blind)

#004E9B

Tritanopia (blue-blind)

#00626F

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #28509d;
/* rgb */ color: rgb(40, 80, 157);
/* oklch */ color: oklch(44.6% 0.134 261.9);

Tailwind

colors: {
  custom: {
    50: '#7280ba',
    500: '#28509d',
    950: '#000000',
  },
}

SCSS

$custom: #28509d;
$custom-light: #7280ba;
$custom-dark: #000000;

JSON

{
  "hex": "#28509d",
  "rgb": {
    "r": 40,
    "g": 80,
    "b": 157
  },
  "hsl": {
    "h": 219.487,
    "s": 59.391,
    "l": 38.627
  },
  "oklch": {
    "l": 0.44636,
    "c": 0.1335,
    "h": 261.9
  },
  "luminance": 0.08623
}

Semantic roles & 50–950 ramp

primary

#28509D

secondary

#BE9F62

accent

#AD45E3

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #28509D

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

Preview Lab → · Contrast checker → · Palette generator →