#66A7DB#66A7DB

#66A7DB is a light, moderate cyan. Relative luminance 0.356; OKLCH L 70.6% C 0.102 H 244.1°. Best body text is #000000 at 8.12:1 contrast (WCAG AA passes).

Color values

HEX#66A7DB
RGBrgb(102, 167, 219)
HSLhsl(207, 62%, 63%)
HSVhsv(207, 53%, 86%)
CMYKcmyk(53.4%, 23.7%, 0%, 14.1%)
CIE-LABlab(66.19, -6.16, -32.68)
CIE-LCHlch(66.19, 33.25, 259.33°)
OKLaboklab(70.56% -0.0444 -0.0914)
OKLCHoklch(70.56% 0.102 244.1)
XYZxyz(32.0798, 35.5740, 72.1801)
Luminance0.3558 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66A7DB #DB9A66
analogous
#66DBD5 #66A7DB #666CDB
triadic
#66A7DB #DB66A7 #A7DB66
tetradic
#66A7DB #D566DB #DB9A66 #6CDB66
square
#66A7DB #D566DB #DB9A66 #6CDB66
split-complementary
#66A7DB #DB666C #DBD566
monochromatic
#266AA1 #348BCF #66A7DB #98C3E7 #C9E0F2

Accessibility & contrast

On white

2.59
#66A7DB on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.12
#66A7DB on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66A7DB
8.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66A7DB#FFFFFF#000000##000000
##66A7DB1.002.598.128.12
#FFFFFF2.591.0021.0021.00
#0000008.1221.001.001.00
##0000008.1221.001.001.00

Color blindness preview

Protanopia (red-blind)
#91A8DD
Deuteranopia (green-blind)
#819CDA
Tritanopia (blue-blind)
#1AB4B9
Achromatopsia (no color)
#A1A1A1

Design tokens & code

CSS
--color: #66a7db;
/* rgb */ color: rgb(102, 167, 219);
/* oklch */ color: oklch(70.6% 0.102 244.1);
Tailwind
colors: {
  custom: {
    50: '#99c1e6',
    500: '#66a7db',
    950: '#000000',
  },
}
SCSS
$custom: #66a7db;
$custom-light: #99c1e6;
$custom-dark: #000000;
JSON
{
  "hex": "#66a7db",
  "rgb": {
    "r": 102,
    "g": 167,
    "b": 219
  },
  "hsl": {
    "h": 206.667,
    "s": 61.905,
    "l": 62.941
  },
  "oklch": {
    "l": 0.70562,
    "c": 0.1016,
    "h": 244.1
  },
  "luminance": 0.35577
}

Semantic roles & 50–950 ramp

primary
#66A7DB
secondary
#E3CCB9
accent
#691CCA
background
#F9FBFE
surface
#F2F7FC
border
#CCD0D5
text
#0E1216
muted
#7E8184

Preview Lab

Preview with #66A7DB

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

Preview Lab → · Contrast checker → · Palette generator →

#66A7DB Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva