#288C9C#288C9C

#288C9C is a mid, moderate teal. Relative luminance 0.216; OKLCH L 59.1% C 0.091 H 210.6°. Best body text is #000000 at 5.32:1 contrast (WCAG AA passes).

Color values

HEX#288C9C
RGBrgb(40, 140, 156)
HSLhsl(188, 59%, 38%)
HSVhsv(188, 74%, 61%)
CMYKcmyk(74.4%, 10.3%, 0%, 38.8%)
CIE-LABlab(53.61, -22.51, -16.68)
CIE-LCHlch(53.61, 28.02, 216.54°)
OKLaboklab(59.13% -0.0785 -0.0464)
OKLCHoklch(59.13% 0.091 210.6)
XYZxyz(16.2513, 21.6057, 34.7598)
Luminance0.2161 (WCAG relative)
Temperaturecool
Familyteal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#288C9C #9C3828
analogous
#289C72 #288C9C #28529C
triadic
#288C9C #9C288C #8C9C28
tetradic
#288C9C #72289C #9C3828 #529C28
square
#288C9C #72289C #9C3828 #529C28
split-complementary
#288C9C #9C2852 #9C7228
monochromatic
#0F353B #1C606B #288C9C #36B7CB #67C8D8

Accessibility & contrast

On white

3.95
#288C9C on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.32
#288C9C on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288C9C
5.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##288C9C#FFFFFF#000000##000000
##288C9C1.003.955.325.32
#FFFFFF3.951.0021.0021.00
#0000005.3221.001.001.00
##0000005.3221.001.001.00

Color blindness preview

Protanopia (red-blind)
#7F879D
Deuteranopia (green-blind)
#6F7B9C
Tritanopia (blue-blind)
#009391
Achromatopsia (no color)
#808080

Design tokens & code

CSS
--color: #288c9c;
/* rgb */ color: rgb(40, 140, 156);
/* oklch */ color: oklch(59.1% 0.091 210.6);
Tailwind
colors: {
  custom: {
    50: '#74aeb9',
    500: '#288c9c',
    950: '#000000',
  },
}
SCSS
$custom: #288c9c;
$custom-light: #74aeb9;
$custom-dark: #000000;
JSON
{
  "hex": "#288c9c",
  "rgb": {
    "r": 40,
    "g": 140,
    "b": 156
  },
  "hsl": {
    "h": 188.276,
    "s": 59.184,
    "l": 38.431
  },
  "oklch": {
    "l": 0.59126,
    "c": 0.09116,
    "h": 210.6
  },
  "luminance": 0.21608
}

Semantic roles & 50–950 ramp

primary
#288C9C
secondary
#BE6F62
accent
#5B45E2
background
#F7FAFB
surface
#EEF4F6
border
#C9CED0
text
#091011
muted
#7B7F80

Preview Lab

Preview with #288C9C

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

Preview Lab → · Contrast checker → · Palette generator →

#288C9C Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva