#289DB9#289DB9

#289DB9 is a light, moderate cyan. Relative luminance 0.281; OKLCH L 64.6% C 0.106 H 218.2°. Best body text is #000000 at 6.61:1 contrast (WCAG AA passes).

Color values

HEX#289DB9
RGBrgb(40, 157, 185)
HSLhsl(192, 64%, 44%)
HSVhsv(192, 78%, 73%)
CMYKcmyk(78.4%, 15.1%, 0%, 27.5%)
CIE-LABlab(59.95, -21.84, -23.52)
CIE-LCHlch(59.95, 32.10, 227.13°)
OKLaboklab(64.59% -0.0835 -0.0658)
OKLCHoklch(64.59% 0.106 218.2)
XYZxyz(21.6853, 28.0652, 50.1637)
Luminance0.2807 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#289DB9 #B94428
analogous
#28B98D #289DB9 #2855B9
triadic
#289DB9 #B9289D #9DB928
tetradic
#289DB9 #8D28B9 #B94428 #55B928
square
#289DB9 #8D28B9 #B94428 #55B928
split-complementary
#289DB9 #B92855 #B98D28
monochromatic
#124854 #1D7287 #289DB9 #47BBD7 #79CEE2

Accessibility & contrast

On white

3.18
#289DB9 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

6.61
#289DB9 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #289DB9
6.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##289DB9#FFFFFF#000000##000000
##289DB91.003.186.616.61
#FFFFFF3.181.0021.0021.00
#0000006.6121.001.001.00
##0000006.6121.001.001.00

Color blindness preview

Protanopia (red-blind)
#8B98BB
Deuteranopia (green-blind)
#788AB9
Tritanopia (blue-blind)
#00A6A6
Achromatopsia (no color)
#909090

Design tokens & code

CSS
--color: #289db9;
/* rgb */ color: rgb(40, 157, 185);
/* oklch */ color: oklch(64.6% 0.106 218.2);
Tailwind
colors: {
  custom: {
    50: '#7abace',
    500: '#289db9',
    950: '#000000',
  },
}
SCSS
$custom: #289db9;
$custom-light: #7abace;
$custom-dark: #000000;
JSON
{
  "hex": "#289db9",
  "rgb": {
    "r": 40,
    "g": 157,
    "b": 185
  },
  "hsl": {
    "h": 191.586,
    "s": 64.444,
    "l": 44.118
  },
  "oklch": {
    "l": 0.64592,
    "c": 0.10628,
    "h": 218.2
  },
  "luminance": 0.28068
}

Semantic roles & 50–950 ramp

primary
#289DB9
secondary
#CA8473
accent
#6140E7
background
#F8FBFC
surface
#EFF6F9
border
#CAD0D2
text
#0B1113
muted
#7C8082

Preview Lab

Preview with #289DB9

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

Preview Lab → · Contrast checker → · Palette generator →

#289DB9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva