#66B2EA#66B2EA

#66B2EA is a light, moderate cyan. Relative luminance 0.406; OKLCH L 73.7% C 0.111 H 242.3°. Best body text is #000000 at 9.12:1 contrast (WCAG AA passes).

Color values

HEX	#66B2EA
RGB	rgb(102, 178, 234)
HSL	hsl(205, 76%, 66%)
HSV	hsv(205, 56%, 92%)
CMYK	cmyk(56.4%, 23.9%, 0%, 8.2%)
CIE-LAB	lab(69.90, -7.66, -35.15)
CIE-LCH	lch(69.90, 35.98, 257.71°)
OKLab	oklab(73.69% -0.0517 -0.0985)
OKLCH	oklch(73.69% 0.111 242.3)
XYZ	xyz(36.2457, 40.6029, 83.7530)
Luminance	0.4061 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B2EA #EA9E66

analogous

#66EAE0 #66B2EA #6670EA

triadic

#66B2EA #EA66B2 #B2EA66

tetradic

#66B2EA #E066EA #EA9E66 #70EA66

square

#66B2EA #E066EA #EA9E66 #70EA66

split-complementary

#66B2EA #EA6670 #EAE066

monochromatic

#1A77BC #3097E3 #66B2EA #9CCDF1 #D2E8F9

Accessibility & contrast

On white

2.30

#66B2EA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.12

#66B2EA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B2EA

9.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B2EA	#FFFFFF	#000000	##000000
##66B2EA	1.00	2.30	9.12	9.12
#FFFFFF	2.30	1.00	21.00	21.00
#000000	9.12	21.00	1.00	1.00
##000000	9.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#99B2ED

Deuteranopia (green-blind)

#88A5E9

Tritanopia (blue-blind)

#00C0C5

Achromatopsia (no color)

#ABABAB

Design tokens & code

CSS

--color: #66b2ea;
/* rgb */ color: rgb(102, 178, 234);
/* oklch */ color: oklch(73.7% 0.111 242.3);

Tailwind

colors: {
  custom: {
    50: '#9bc8f1',
    500: '#66b2ea',
    950: '#000000',
  },
}

SCSS

$custom: #66b2ea;
$custom-light: #9bc8f1;
$custom-dark: #000000;

JSON

{
  "hex": "#66b2ea",
  "rgb": {
    "r": 102,
    "g": 178,
    "b": 234
  },
  "hsl": {
    "h": 205.455,
    "s": 75.862,
    "l": 65.882
  },
  "oklch": {
    "l": 0.73688,
    "c": 0.11123,
    "h": 242.3
  },
  "luminance": 0.40606
}

Semantic roles & 50–950 ramp

primary

#66B2EA

secondary

#ECD3C0

accent

#630DD8

background

#FAFCFE

surface

#F3F8FD

border

#CDD1D5

text

#0F1316

muted

#7F8284

Preview Lab

Preview with #66B2EA

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

Preview Lab → · Contrast checker → · Palette generator →