#28579C#28579C

#28579C is a mid, vivid blue. Relative luminance 0.097; OKLCH L 46.1% C 0.123 H 258.2°. Best body text is #FFFFFF at 7.16:1 contrast (WCAG AA passes).

Color values

HEX	#28579C
RGB	rgb(40, 87, 156)
HSL	hsl(216, 59%, 38%)
HSV	hsv(216, 74%, 61%)
CMYK	cmyk(74.4%, 44.2%, 0%, 38.8%)
CIE-LAB	lab(37.24, 8.77, -42.24)
CIE-LCH	lch(37.24, 43.14, 281.73°)
OKLab	oklab(46.15% -0.0253 -0.1209)
OKLCH	oklch(46.15% 0.124 258.2)
XYZ	xyz(10.2818, 9.6667, 32.7700)
Luminance	0.0967 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28579C #9C6D28

analogous

#28919C #28579C #33289C

triadic

#28579C #9C2857 #579C28

tetradic

#28579C #9C2891 #9C6D28 #289C33

square

#28579C #9C2891 #9C6D28 #289C33

split-complementary

#28579C #9C3328 #919C28

monochromatic

#0F213B #1C3C6B #28579C #3672CB #6794D8

Accessibility & contrast

On white

7.16

#28579C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.93

#28579C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28579C

7.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28579C	#FFFFFF	#000000	##FFFFFF
##28579C	1.00	7.16	2.93	7.16
#FFFFFF	7.16	1.00	21.00	1.00
#000000	2.93	21.00	1.00	21.00
##FFFFFF	7.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#355D9F

Deuteranopia (green-blind)

#1F539B

Tritanopia (blue-blind)

#006772

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #28579c;
/* rgb */ color: rgb(40, 87, 156);
/* oklch */ color: oklch(46.1% 0.123 258.2);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#28579c",
  "rgb": {
    "r": 40,
    "g": 87,
    "b": 156
  },
  "hsl": {
    "h": 215.69,
    "s": 59.184,
    "l": 38.431
  },
  "oklch": {
    "l": 0.46149,
    "c": 0.1235,
    "h": 258.2
  },
  "luminance": 0.09668
}

Semantic roles & 50–950 ramp

primary

#28579C

secondary

#BE9962

accent

#A345E2

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#090B11

muted

#7B7C80

Preview Lab

Preview with #28579C

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

Preview Lab → · Contrast checker → · Palette generator →