#28556B#28556B

#28556B is a dark, moderate cyan. Relative luminance 0.080; OKLCH L 42.8% C 0.061 H 231.9°. Best body text is #FFFFFF at 8.07:1 contrast (WCAG AA passes).

Color values

HEX#28556B
RGBrgb(40, 85, 107)
HSLhsl(200, 46%, 29%)
HSVhsv(200, 63%, 42%)
CMYKcmyk(62.6%, 20.6%, 0%, 58%)
CIE-LABlab(34.00, -8.20, -17.30)
CIE-LCHlch(34.00, 19.15, 244.65°)
OKLaboklab(42.76% -0.0379 -0.0483)
OKLCHoklch(42.76% 0.061 231.9)
XYZxyz(6.7764, 8.0090, 15.0958)
Luminance0.0801 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#28556B #6B3E28
analogous
#286B60 #28556B #28346B
triadic
#28556B #6B2855 #556B28
tetradic
#28556B #60286B #6B3E28 #346B28
square
#28556B #60286B #6B3E28 #346B28
split-complementary
#28556B #6B2834 #6B6028
monochromatic
#081216 #17323E #28556B #397898 #509ABE

Accessibility & contrast

On white

8.07
#28556B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.60
#28556B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28556B
8.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##28556B#FFFFFF#000000##FFFFFF
##28556B1.008.072.608.07
#FFFFFF8.071.0021.001.00
#0000002.6021.001.0021.00
##FFFFFF8.071.0021.001.00

Color blindness preview

Protanopia (red-blind)
#4A546C
Deuteranopia (green-blind)
#414D6B
Tritanopia (blue-blind)
#005B5C
Achromatopsia (no color)
#505050

Design tokens & code

CSS
--color: #28556b;
/* rgb */ color: rgb(40, 85, 107);
/* oklch */ color: oklch(42.8% 0.061 231.9);
Tailwind
colors: {
  custom: {
    50: '#698495',
    500: '#28556b',
    950: '#000000',
  },
}
SCSS
$custom: #28556b;
$custom-light: #698495;
$custom-dark: #000000;
JSON
{
  "hex": "#28556b",
  "rgb": {
    "r": 40,
    "g": 85,
    "b": 107
  },
  "hsl": {
    "h": 199.701,
    "s": 45.578,
    "l": 28.824
  },
  "oklch": {
    "l": 0.42758,
    "c": 0.0614,
    "h": 231.9
  },
  "luminance": 0.0801
}

Semantic roles & 50–950 ramp

primary
#28556B
secondary
#9D6A51
accent
#7D53D5
background
#F6F8F9
surface
#EBEFF1
border
#C6CACB
text
#070B0D
muted
#7A7C7E

Preview Lab

Preview with #28556B

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

Preview Lab → · Contrast checker → · Palette generator →

#28556B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva