#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
RGB	rgb(102, 167, 235)
HSL	hsl(211, 77%, 66%)
HSV	hsv(211, 57%, 92%)
CMYK	cmyk(56.6%, 28.9%, 0%, 7.8%)
CIE-LAB	lab(66.87, -1.25, -40.42)
CIE-LCH	lch(66.87, 40.44, 268.22°)
OKLab	oklab(71.32% -0.0395 -0.1137)
OKLCH	oklch(71.32% 0.12 250.9)
XYZ	xyz(34.2882, 36.4574, 83.8112)
Luminance	0.3646 (WCAG relative)
Temperature	cool
Family	cyan

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
##66A7EB	1.00	2.53	8.29	8.29
#FFFFFF	2.53	1.00	21.00	21.00
#000000	8.29	21.00	1.00	1.00
##000000	8.29	21.00	1.00	1.00

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 →