#28579F#28579F

#28579F is a mid, vivid blue. Relative luminance 0.098; OKLCH L 46.4% C 0.128 H 258.8°. Best body text is #FFFFFF at 7.11:1 contrast (WCAG AA passes).

Color values

HEX	#28579F
RGB	rgb(40, 87, 159)
HSL	hsl(216, 60%, 39%)
HSV	hsv(216, 75%, 62%)
CMYK	cmyk(74.8%, 45.3%, 0%, 37.6%)
CIE-LAB	lab(37.43, 9.93, -43.74)
CIE-LCH	lch(37.43, 44.85, 282.79°)
OKLab	oklab(46.36% -0.0247 -0.1253)
OKLCH	oklch(46.36% 0.128 258.8)
XYZ	xyz(10.5390, 9.7695, 34.1244)
Luminance	0.0977 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28579F #9F7028

analogous

#28939F #28579F #35289F

triadic

#28579F #9F2857 #579F28

tetradic

#28579F #9F2893 #9F7028 #289F35

square

#28579F #9F2893 #9F7028 #289F35

split-complementary

#28579F #9F3528 #939F28

monochromatic

#0F213D #1C3C6E #28579F #3772CD #6895D9

Accessibility & contrast

On white

7.11

#28579F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.95

#28579F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28579F

7.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28579F	#FFFFFF	#000000	##FFFFFF
##28579F	1.00	7.11	2.95	7.11
#FFFFFF	7.11	1.00	21.00	1.00
#000000	2.95	21.00	1.00	21.00
##FFFFFF	7.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#335EA2

Deuteranopia (green-blind)

#1B539E

Tritanopia (blue-blind)

#006873

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #28579f;
/* rgb */ color: rgb(40, 87, 159);
/* oklch */ color: oklch(46.4% 0.128 258.8);

Tailwind

colors: {
  custom: {
    50: '#7285bc',
    500: '#28579f',
    950: '#000000',
  },
}

SCSS

$custom: #28579f;
$custom-light: #7285bc;
$custom-dark: #000000;

JSON

{
  "hex": "#28579f",
  "rgb": {
    "r": 40,
    "g": 87,
    "b": 159
  },
  "hsl": {
    "h": 216.303,
    "s": 59.799,
    "l": 39.02
  },
  "oklch": {
    "l": 0.46355,
    "c": 0.12769,
    "h": 258.8
  },
  "luminance": 0.09771
}

Semantic roles & 50–950 ramp

primary

#28579F

secondary

#BF9B64

accent

#A545E3

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#090B12

muted

#7B7C81

Preview Lab

Preview with #28579F

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

Preview Lab → · Contrast checker → · Palette generator →