#288AA4#288AA4

#288AA4 is a mid, moderate cyan. Relative luminance 0.213; OKLCH L 59.0% C 0.095 H 219.8°. Best body text is #000000 at 5.26:1 contrast (WCAG AA passes).

Color values

HEX#288AA4
RGBrgb(40, 138, 164)
HSLhsl(193, 61%, 40%)
HSVhsv(193, 76%, 64%)
CMYKcmyk(75.6%, 15.9%, 0%, 35.7%)
CIE-LABlab(53.28, -18.80, -21.79)
CIE-LCHlch(53.28, 28.78, 229.20°)
OKLaboklab(58.97% -0.0731 -0.0609)
OKLCHoklch(58.97% 0.095 219.8)
XYZxyz(16.6616, 21.3064, 38.3492)
Luminance0.2131 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#288AA4 #A44228
analogous
#28A480 #288AA4 #284CA4
triadic
#288AA4 #A4288A #8AA428
tetradic
#288AA4 #8028A4 #A44228 #4CA428
square
#288AA4 #8028A4 #A44228 #4CA428
split-complementary
#288AA4 #A4284C #A48028
monochromatic
#103742 #1C6173 #288AA4 #3AB0CF #6BC4DB

Accessibility & contrast

On white

3.99
#288AA4 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.26
#288AA4 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288AA4
5.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##288AA4#FFFFFF#000000##000000
##288AA41.003.995.265.26
#FFFFFF3.991.0021.0021.00
#0000005.2621.001.001.00
##0000005.2621.001.001.00

Color blindness preview

Protanopia (red-blind)
#7A86A5
Deuteranopia (green-blind)
#697AA4
Tritanopia (blue-blind)
#009392
Achromatopsia (no color)
#7F7F7F

Design tokens & code

CSS
--color: #288aa4;
/* rgb */ color: rgb(40, 138, 164);
/* oklch */ color: oklch(59.0% 0.095 219.8);
Tailwind
colors: {
  custom: {
    50: '#75acbf',
    500: '#288aa4',
    950: '#000000',
  },
}
SCSS
$custom: #288aa4;
$custom-light: #75acbf;
$custom-dark: #000000;
JSON
{
  "hex": "#288aa4",
  "rgb": {
    "r": 40,
    "g": 138,
    "b": 164
  },
  "hsl": {
    "h": 192.581,
    "s": 60.784,
    "l": 40
  },
  "oklch": {
    "l": 0.58966,
    "c": 0.09514,
    "h": 219.8
  },
  "luminance": 0.21308
}

Semantic roles & 50–950 ramp

primary
#288AA4
secondary
#C17966
accent
#6544E4
background
#F7FAFB
surface
#EEF4F7
border
#C9CED0
text
#0A1012
muted
#7C7F81

Preview Lab

Preview with #288AA4

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

Preview Lab → · Contrast checker → · Palette generator →

#288AA4 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva