#28579D#28579D

#28579D is a mid, vivid blue. Relative luminance 0.097; OKLCH L 46.2% C 0.125 H 258.4°. Best body text is #FFFFFF at 7.14:1 contrast (WCAG AA passes).

Color values

HEX	#28579D
RGB	rgb(40, 87, 157)
HSL	hsl(216, 59%, 39%)
HSV	hsv(216, 75%, 62%)
CMYK	cmyk(74.5%, 44.6%, 0%, 38.4%)
CIE-LAB	lab(37.30, 9.15, -42.74)
CIE-LCH	lch(37.30, 43.71, 282.09°)
OKLab	oklab(46.22% -0.0251 -0.1223)
OKLCH	oklch(46.22% 0.125 258.4)
XYZ	xyz(10.3669, 9.7007, 33.2178)
Luminance	0.0970 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28579D #9D6E28

analogous

#28919D #28579D #33289D

triadic

#28579D #9D2857 #579D28

tetradic

#28579D #9D2891 #9D6E28 #289D33

square

#28579D #9D2891 #9D6E28 #289D33

split-complementary

#28579D #9D3328 #919D28

monochromatic

#0F213B #1C3C6C #28579D #3672CC #6795D8

Accessibility & contrast

On white

7.14

#28579D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.94

#28579D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28579D

7.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28579D	#FFFFFF	#000000	##FFFFFF
##28579D	1.00	7.14	2.94	7.14
#FFFFFF	7.14	1.00	21.00	1.00
#000000	2.94	21.00	1.00	21.00
##FFFFFF	7.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#345EA0

Deuteranopia (green-blind)

#1E539C

Tritanopia (blue-blind)

#006772

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #28579d;
/* rgb */ color: rgb(40, 87, 157);
/* oklch */ color: oklch(46.2% 0.125 258.4);

Tailwind

colors: {
  custom: {
    50: '#7285ba',
    500: '#28579d',
    950: '#000000',
  },
}

SCSS

$custom: #28579d;
$custom-light: #7285ba;
$custom-dark: #000000;

JSON

{
  "hex": "#28579d",
  "rgb": {
    "r": 40,
    "g": 87,
    "b": 157
  },
  "hsl": {
    "h": 215.897,
    "s": 59.391,
    "l": 38.627
  },
  "oklch": {
    "l": 0.46218,
    "c": 0.12489,
    "h": 258.4
  },
  "luminance": 0.09702
}

Semantic roles & 50–950 ramp

primary

#28579D

secondary

#BE9962

accent

#A345E3

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#090B12

muted

#7B7C81

Preview Lab

Preview with #28579D

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

Preview Lab → · Contrast checker → · Palette generator →