#66A3EB#66A3EB

#66A3EB is a light, vivid cyan. Relative luminance 0.350; OKLCH L 70.4% C 0.124 H 253.5°. Best body text is #000000 at 8.00:1 contrast (WCAG AA passes).

Color values

HEX	#66A3EB
RGB	rgb(102, 163, 235)
HSL	hsl(212, 77%, 66%)
HSV	hsv(212, 57%, 92%)
CMYK	cmyk(56.6%, 30.6%, 0%, 7.8%)
CIE-LAB	lab(65.76, 1.01, -42.15)
CIE-LCH	lch(65.76, 42.16, 271.37°)
OKLab	oklab(70.45% -0.0351 -0.1188)
OKLCH	oklch(70.45% 0.124 253.5)
XYZ	xyz(33.5668, 35.0145, 83.5707)
Luminance	0.3502 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A3EB #EBAE66

analogous

#66E6EB #66A3EB #6B66EB

triadic

#66A3EB #EB66A3 #A3EB66

tetradic

#66A3EB #EB66E6 #EBAE66 #66EB6B

square

#66A3EB #EB66E6 #EBAE66 #66EB6B

split-complementary

#66A3EB #EB6B66 #E6EB66

monochromatic

#1964BE #3082E4 #66A3EB #9CC4F2 #D2E4F9

Accessibility & contrast

On white

2.62

#66A3EB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.00

#66A3EB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66A3EB

8.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A3EB	#FFFFFF	#000000	##000000
##66A3EB	1.00	2.62	8.00	8.00
#FFFFFF	2.62	1.00	21.00	21.00
#000000	8.00	21.00	1.00	1.00
##000000	8.00	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#85A7EE

Deuteranopia (green-blind)

#749AEA

Tritanopia (blue-blind)

#00B3BD

Achromatopsia (no color)

#A0A0A0

Design tokens & code

CSS

--color: #66a3eb;
/* rgb */ color: rgb(102, 163, 235);
/* oklch */ color: oklch(70.4% 0.124 253.5);

Tailwind

colors: {
  custom: {
    50: '#9bbef1',
    500: '#66a3eb',
    950: '#000000',
  },
}

SCSS

$custom: #66a3eb;
$custom-light: #9bbef1;
$custom-dark: #000000;

JSON

{
  "hex": "#66a3eb",
  "rgb": {
    "r": 102,
    "g": 163,
    "b": 235
  },
  "hsl": {
    "h": 212.481,
    "s": 76.879,
    "l": 66.078
  },
  "oklch": {
    "l": 0.70446,
    "c": 0.12386,
    "h": 253.5
  },
  "luminance": 0.35017
}

Semantic roles & 50–950 ramp

primary

#66A3EB

secondary

#ECD8C1

accent

#7B0CD9

background

#FAFBFE

surface

#F3F6FD

border

#CDD0D5

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #66A3EB

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

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