#66BDF2#66BDF2

#66BDF2 is a light, moderate cyan. Relative luminance 0.456; OKLCH L 76.5% C 0.113 H 237.5°. Best body text is #000000 at 10.13:1 contrast (WCAG AA passes).

Color values

HEX	#66BDF2
RGB	rgb(102, 189, 242)
HSL	hsl(203, 84%, 67%)
HSV	hsv(203, 58%, 95%)
CMYK	cmyk(57.9%, 21.9%, 0%, 5.1%)
CIE-LAB	lab(73.30, -11.18, -34.21)
CIE-LCH	lch(73.30, 35.99, 251.91°)
OKLab	oklab(76.49% -0.061 -0.0957)
OKLCH	oklch(76.49% 0.113 237.5)
XYZ	xyz(39.6981, 45.6271, 90.7020)
Luminance	0.4563 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BDF2 #F29B66

analogous

#66F2E1 #66BDF2 #6677F2

triadic

#66BDF2 #F266BD #BDF266

tetradic

#66BDF2 #E166F2 #F29B66 #77F266

square

#66BDF2 #E166F2 #F29B66 #77F266

split-complementary

#66BDF2 #F26677 #F2E166

monochromatic

#1185CC #2EA5ED #66BDF2 #9ED5F7 #D7EEFC

Accessibility & contrast

On white

2.07

#66BDF2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.13

#66BDF2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BDF2

10.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BDF2	#FFFFFF	#000000	##000000
##66BDF2	1.00	2.07	10.13	10.13
#FFFFFF	2.07	1.00	21.00	21.00
#000000	10.13	21.00	1.00	1.00
##000000	10.13	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A5BCF5

Deuteranopia (green-blind)

#91AEF1

Tritanopia (blue-blind)

#00CBCF

Achromatopsia (no color)

#B4B4B4

Design tokens & code

CSS

--color: #66bdf2;
/* rgb */ color: rgb(102, 189, 242);
/* oklch */ color: oklch(76.5% 0.113 237.5);

Tailwind

colors: {
  custom: {
    50: '#9cd0f6',
    500: '#66bdf2',
    950: '#000000',
  },
}

SCSS

$custom: #66bdf2;
$custom-light: #9cd0f6;
$custom-dark: #000000;

JSON

{
  "hex": "#66bdf2",
  "rgb": {
    "r": 102,
    "g": 189,
    "b": 242
  },
  "hsl": {
    "h": 202.714,
    "s": 84.337,
    "l": 67.451
  },
  "oklch": {
    "l": 0.7649,
    "c": 0.11348,
    "h": 237.5
  },
  "luminance": 0.45631
}

Semantic roles & 50–950 ramp

primary

#66BDF2

secondary

#F0D5C4

accent

#5805E1

background

#FAFCFF

surface

#F4F9FE

border

#CED2D6

text

#0F1417

muted

#7F8285

Preview Lab

Preview with #66BDF2

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

Preview Lab → · Contrast checker → · Palette generator →