#66BDF0#66BDF0

#66BDF0 is a light, moderate cyan. Relative luminance 0.455; OKLCH L 76.4% C 0.112 H 236.5°. Best body text is #000000 at 10.10:1 contrast (WCAG AA passes).

Color values

HEX	#66BDF0
RGB	rgb(102, 189, 240)
HSL	hsl(202, 82%, 67%)
HSV	hsv(202, 58%, 94%)
CMYK	cmyk(57.5%, 21.2%, 0%, 5.9%)
CIE-LAB	lab(73.22, -11.78, -33.25)
CIE-LCH	lch(73.22, 35.28, 250.49°)
OKLab	oklab(76.4% -0.0616 -0.093)
OKLCH	oklch(76.4% 0.112 236.5)
XYZ	xyz(39.3993, 45.5076, 89.1287)
Luminance	0.4551 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BDF0 #F09966

analogous

#66F0DE #66BDF0 #6678F0

triadic

#66BDF0 #F066BD #BDF066

tetradic

#66BDF0 #DE66F0 #F09966 #78F066

square

#66BDF0 #DE66F0 #F09966 #78F066

split-complementary

#66BDF0 #F06678 #F0DE66

monochromatic

#1485C8 #2EA5EB #66BDF0 #9ED5F5 #D5EDFB

Accessibility & contrast

On white

2.08

#66BDF0 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.10

#66BDF0 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BDF0

10.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BDF0	#FFFFFF	#000000	##000000
##66BDF0	1.00	2.08	10.10	10.10
#FFFFFF	2.08	1.00	21.00	21.00
#000000	10.10	21.00	1.00	1.00
##000000	10.10	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A5BCF2

Deuteranopia (green-blind)

#92AEEF

Tritanopia (blue-blind)

#00CACE

Achromatopsia (no color)

#B4B4B4

Design tokens & code

CSS

--color: #66bdf0;
/* rgb */ color: rgb(102, 189, 240);
/* oklch */ color: oklch(76.4% 0.112 236.5);

Tailwind

colors: {
  custom: {
    50: '#9cd0f5',
    500: '#66bdf0',
    950: '#000000',
  },
}

SCSS

$custom: #66bdf0;
$custom-light: #9cd0f5;
$custom-dark: #000000;

JSON

{
  "hex": "#66bdf0",
  "rgb": {
    "r": 102,
    "g": 189,
    "b": 240
  },
  "hsl": {
    "h": 202.174,
    "s": 82.143,
    "l": 67.059
  },
  "oklch": {
    "l": 0.76403,
    "c": 0.11154,
    "h": 236.5
  },
  "luminance": 0.45511
}

Semantic roles & 50–950 ramp

primary

#66BDF0

secondary

#EFD3C3

accent

#5707DF

background

#FAFCFE

surface

#F4F9FD

border

#CED2D5

text

#0F1417

muted

#7F8285

Preview Lab

Preview with #66BDF0

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

Preview Lab → · Contrast checker → · Palette generator →