#66B0F0#66B0F0

#66B0F0 is a light, moderate cyan. Relative luminance 0.402; OKLCH L 73.5% C 0.119 H 246.4°. Best body text is #000000 at 9.03:1 contrast (WCAG AA passes).

Color values

HEX	#66B0F0
RGB	rgb(102, 176, 240)
HSL	hsl(208, 82%, 67%)
HSV	hsv(208, 58%, 94%)
CMYK	cmyk(57.5%, 26.7%, 0%, 5.9%)
CIE-LAB	lab(69.59, -4.72, -38.90)
CIE-LCH	lch(69.59, 39.19, 263.08°)
OKLab	oklab(73.52% -0.0477 -0.1093)
OKLCH	oklch(73.52% 0.119 246.4)
XYZ	xyz(36.7273, 40.1634, 88.2380)
Luminance	0.4017 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B0F0 #F0A666

analogous

#66F0EB #66B0F0 #666BF0

triadic

#66B0F0 #F066B0 #B0F066

tetradic

#66B0F0 #EB66F0 #F0A666 #6BF066

square

#66B0F0 #EB66F0 #F0A666 #6BF066

split-complementary

#66B0F0 #F0666B #F0EB66

monochromatic

#1474C8 #2E93EB #66B0F0 #9ECDF5 #D5EAFB

Accessibility & contrast

On white

2.32

#66B0F0 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.03

#66B0F0 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B0F0

9.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B0F0	#FFFFFF	#000000	##000000
##66B0F0	1.00	2.32	9.03	9.03
#FFFFFF	2.32	1.00	21.00	21.00
#000000	9.03	21.00	1.00	1.00
##000000	9.03	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#95B2F3

Deuteranopia (green-blind)

#82A4EF

Tritanopia (blue-blind)

#00BFC6

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #66b0f0;
/* rgb */ color: rgb(102, 176, 240);
/* oklch */ color: oklch(73.5% 0.119 246.4);

Tailwind

colors: {
  custom: {
    50: '#9bc7f5',
    500: '#66b0f0',
    950: '#000000',
  },
}

SCSS

$custom: #66b0f0;
$custom-light: #9bc7f5;
$custom-dark: #000000;

JSON

{
  "hex": "#66b0f0",
  "rgb": {
    "r": 102,
    "g": 176,
    "b": 240
  },
  "hsl": {
    "h": 207.826,
    "s": 82.143,
    "l": 67.059
  },
  "oklch": {
    "l": 0.73524,
    "c": 0.11924,
    "h": 246.4
  },
  "luminance": 0.40167
}

Semantic roles & 50–950 ramp

primary

#66B0F0

secondary

#EFD7C3

accent

#6B07DF

background

#FAFCFE

surface

#F4F8FD

border

#CED1D5

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #66B0F0

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

Preview Lab → · Contrast checker → · Palette generator →