#289EBB#289EBB

#289EBB is a light, moderate cyan. Relative luminance 0.285; OKLCH L 64.9% C 0.107 H 218.8°. Best body text is #000000 at 6.70:1 contrast (WCAG AA passes).

Color values

HEX#289EBB
RGBrgb(40, 158, 187)
HSLhsl(192, 65%, 45%)
HSVhsv(192, 79%, 73%)
CMYKcmyk(78.6%, 15.5%, 0%, 26.7%)
CIE-LABlab(60.33, -21.69, -24.07)
CIE-LCHlch(60.33, 32.40, 227.97°)
OKLaboklab(64.92% -0.0837 -0.0673)
OKLCHoklch(64.92% 0.107 218.8)
XYZxyz(22.0678, 28.4900, 51.3401)
Luminance0.2849 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#289EBB #BB4528
analogous
#28BB8F #289EBB #2854BB
triadic
#289EBB #BB289E #9EBB28
tetradic
#289EBB #8F28BB #BB4528 #54BB28
square
#289EBB #8F28BB #BB4528 #54BB28
split-complementary
#289EBB #BB2854 #BB8F28
monochromatic
#124956 #1D7389 #289EBB #48BCD8 #7BCEE3

Accessibility & contrast

On white

3.13
#289EBB on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

6.70
#289EBB on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #289EBB
6.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##289EBB#FFFFFF#000000##000000
##289EBB1.003.136.706.70
#FFFFFF3.131.0021.0021.00
#0000006.7021.001.001.00
##0000006.7021.001.001.00

Color blindness preview

Protanopia (red-blind)
#8C99BD
Deuteranopia (green-blind)
#788BBB
Tritanopia (blue-blind)
#00A8A7
Achromatopsia (no color)
#919191

Design tokens & code

CSS
--color: #289ebb;
/* rgb */ color: rgb(40, 158, 187);
/* oklch */ color: oklch(64.9% 0.107 218.8);
Tailwind
colors: {
  custom: {
    50: '#7abbcf',
    500: '#289ebb',
    950: '#000000',
  },
}
SCSS
$custom: #289ebb;
$custom-light: #7abbcf;
$custom-dark: #000000;
JSON
{
  "hex": "#289ebb",
  "rgb": {
    "r": 40,
    "g": 158,
    "b": 187
  },
  "hsl": {
    "h": 191.837,
    "s": 64.758,
    "l": 44.51
  },
  "oklch": {
    "l": 0.64924,
    "c": 0.10738,
    "h": 218.8
  },
  "luminance": 0.28493
}

Semantic roles & 50–950 ramp

primary
#289EBB
secondary
#CB8574
accent
#6140E8
background
#F8FBFC
surface
#EFF6F9
border
#CAD0D2
text
#0B1113
muted
#7C8082

Preview Lab

Preview with #289EBB

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

Preview Lab → · Contrast checker → · Palette generator →

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