#66A7EB#66A7EB

#66A7EB is a light, vivid cyan. Relative luminance 0.365; OKLCH L 71.3% C 0.120 H 250.9°. Best body text is #000000 at 8.29:1 contrast (WCAG AA passes).

Color values

HEX#66A7EB
RGBrgb(102, 167, 235)
HSLhsl(211, 77%, 66%)
HSVhsv(211, 57%, 92%)
CMYKcmyk(56.6%, 28.9%, 0%, 7.8%)
CIE-LABlab(66.87, -1.25, -40.42)
CIE-LCHlch(66.87, 40.44, 268.22°)
OKLaboklab(71.32% -0.0395 -0.1137)
OKLCHoklch(71.32% 0.12 250.9)
XYZxyz(34.2882, 36.4574, 83.8112)
Luminance0.3646 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66A7EB #EBAA66
analogous
#66E9EB #66A7EB #6766EB
triadic
#66A7EB #EB66A7 #A7EB66
tetradic
#66A7EB #EB66E9 #EBAA66 #66EB67
square
#66A7EB #EB66E9 #EBAA66 #66EB67
split-complementary
#66A7EB #EB6766 #E9EB66
monochromatic
#1969BE #3088E4 #66A7EB #9CC6F2 #D2E5F9

Accessibility & contrast

On white

2.53
#66A7EB on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.29
#66A7EB on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66A7EB
8.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66A7EB#FFFFFF#000000##000000
##66A7EB1.002.538.298.29
#FFFFFF2.531.0021.0021.00
#0000008.2921.001.001.00
##0000008.2921.001.001.00

Color blindness preview

Protanopia (red-blind)
#8BAAEE
Deuteranopia (green-blind)
#799DEA
Tritanopia (blue-blind)
#00B7BF
Achromatopsia (no color)
#A3A3A3

Design tokens & code

CSS
--color: #66a7eb;
/* rgb */ color: rgb(102, 167, 235);
/* oklch */ color: oklch(71.3% 0.120 250.9);
Tailwind
colors: {
  custom: {
    50: '#9bc0f1',
    500: '#66a7eb',
    950: '#000000',
  },
}
SCSS
$custom: #66a7eb;
$custom-light: #9bc0f1;
$custom-dark: #000000;
JSON
{
  "hex": "#66a7eb",
  "rgb": {
    "r": 102,
    "g": 167,
    "b": 235
  },
  "hsl": {
    "h": 210.677,
    "s": 76.879,
    "l": 66.078
  },
  "oklch": {
    "l": 0.71315,
    "c": 0.12038,
    "h": 250.9
  },
  "luminance": 0.3646
}

Semantic roles & 50–950 ramp

primary
#66A7EB
secondary
#ECD7C1
accent
#750CD9
background
#FAFBFE
surface
#F3F7FD
border
#CDD0D5
text
#0F1217
muted
#7F8185

Preview Lab

Preview with #66A7EB

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

Preview Lab → · Contrast checker → · Palette generator →

#66A7EB Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva