#66B2EF#66B2EF

#66B2EF is a light, moderate cyan. Relative luminance 0.409; OKLCH L 73.9% C 0.117 H 244.5°. Best body text is #000000 at 9.18:1 contrast (WCAG AA passes).

Color values

HEX	#66B2EF
RGB	rgb(102, 178, 239)
HSL	hsl(207, 81%, 67%)
HSV	hsv(207, 57%, 94%)
CMYK	cmyk(57.3%, 25.5%, 0%, 6.3%)
CIE-LAB	lab(70.10, -6.13, -37.55)
CIE-LCH	lch(70.10, 38.05, 260.73°)
OKLab	oklab(73.92% -0.0502 -0.1054)
OKLCH	oklch(73.92% 0.117 244.5)
XYZ	xyz(36.9742, 40.8942, 87.5895)
Luminance	0.4090 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B2EF #EFA366

analogous

#66EFE7 #66B2EF #666EEF

triadic

#66B2EF #EF66B2 #B2EF66

tetradic

#66B2EF #E766EF #EFA366 #6EEF66

square

#66B2EF #E766EF #EFA366 #6EEF66

split-complementary

#66B2EF #EF666E #EFE766

monochromatic

#1577C6 #2F96E9 #66B2EF #9DCEF5 #D5EAFB

Accessibility & contrast

On white

2.29

#66B2EF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.18

#66B2EF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B2EF

9.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B2EF	#FFFFFF	#000000	##000000
##66B2EF	1.00	2.29	9.18	9.18
#FFFFFF	2.29	1.00	21.00	21.00
#000000	9.18	21.00	1.00	1.00
##000000	9.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#98B3F2

Deuteranopia (green-blind)

#85A5EE

Tritanopia (blue-blind)

#00C1C7

Achromatopsia (no color)

#ABABAB

Design tokens & code

CSS

--color: #66b2ef;
/* rgb */ color: rgb(102, 178, 239);
/* oklch */ color: oklch(73.9% 0.117 244.5);

Tailwind

colors: {
  custom: {
    50: '#9bc8f4',
    500: '#66b2ef',
    950: '#000000',
  },
}

SCSS

$custom: #66b2ef;
$custom-light: #9bc8f4;
$custom-dark: #000000;

JSON

{
  "hex": "#66b2ef",
  "rgb": {
    "r": 102,
    "g": 178,
    "b": 239
  },
  "hsl": {
    "h": 206.715,
    "s": 81.065,
    "l": 66.863
  },
  "oklch": {
    "l": 0.73918,
    "c": 0.11671,
    "h": 244.5
  },
  "luminance": 0.40898
}

Semantic roles & 50–950 ramp

primary

#66B2EF

secondary

#EED6C2

accent

#6708DD

background

#FAFCFE

surface

#F4F8FD

border

#CED1D5

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #66B2EF

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

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