#66BCF5#66BCF5

#66BCF5 is a light, moderate cyan. Relative luminance 0.454; OKLCH L 76.4% C 0.117 H 239.8°. Best body text is #000000 at 10.08:1 contrast (WCAG AA passes).

Color values

HEX	#66BCF5
RGB	rgb(102, 188, 245)
HSL	hsl(204, 88%, 68%)
HSV	hsv(204, 58%, 96%)
CMYK	cmyk(58.4%, 23.3%, 0%, 3.9%)
CIE-LAB	lab(73.14, -9.73, -36.08)
CIE-LCH	lch(73.14, 37.37, 254.91°)
OKLab	oklab(76.4% -0.0589 -0.1011)
OKLCH	oklch(76.4% 0.117 239.8)
XYZ	xyz(39.9380, 45.3801, 93.0230)
Luminance	0.4538 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BCF5 #F59F66

analogous

#66F5E6 #66BCF5 #6674F5

triadic

#66BCF5 #F566BC #BCF566

tetradic

#66BCF5 #E666F5 #F59F66 #74F566

square

#66BCF5 #E666F5 #F59F66 #74F566

split-complementary

#66BCF5 #F56674 #F5E666

monochromatic

#0E84D3 #2DA3F1 #66BCF5 #9FD5F9 #D9EEFD

Accessibility & contrast

On white

2.08

#66BCF5 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.08

#66BCF5 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BCF5

10.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BCF5	#FFFFFF	#000000	##000000
##66BCF5	1.00	2.08	10.08	10.08
#FFFFFF	2.08	1.00	21.00	21.00
#000000	10.08	21.00	1.00	1.00
##000000	10.08	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A2BCF8

Deuteranopia (green-blind)

#8FADF4

Tritanopia (blue-blind)

#00CACF

Achromatopsia (no color)

#B4B4B4

Design tokens & code

CSS

--color: #66bcf5;
/* rgb */ color: rgb(102, 188, 245);
/* oklch */ color: oklch(76.4% 0.117 239.8);

Tailwind

colors: {
  custom: {
    50: '#9cd0f8',
    500: '#66bcf5',
    950: '#000000',
  },
}

SCSS

$custom: #66bcf5;
$custom-light: #9cd0f8;
$custom-dark: #000000;

JSON

{
  "hex": "#66bcf5",
  "rgb": {
    "r": 102,
    "g": 188,
    "b": 245
  },
  "hsl": {
    "h": 203.916,
    "s": 87.73,
    "l": 68.039
  },
  "oklch": {
    "l": 0.76401,
    "c": 0.11701,
    "h": 239.8
  },
  "luminance": 0.45384
}

Semantic roles & 50–950 ramp

primary

#66BCF5

secondary

#F1D7C6

accent

#5C01E4

background

#FAFCFF

surface

#F4F9FF

border

#CED2D7

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #66BCF5

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

Preview Lab → · Contrast checker → · Palette generator →