#66EFF3#66EFF3

#66EFF3 is a very light, moderate teal. Relative luminance 0.710; OKLCH L 87.9% C 0.119 H 197.9°. Best body text is #000000 at 15.21:1 contrast (WCAG AA passes).

Color values

HEX	#66EFF3
RGB	rgb(102, 239, 243)
HSL	hsl(182, 85%, 68%)
HSV	hsv(182, 58%, 95%)
CMYK	cmyk(58%, 1.6%, 0%, 4.7%)
CIE-LAB	lab(87.50, -35.82, -13.15)
CIE-LCH	lch(87.50, 38.15, 200.16°)
OKLab	oklab(87.87% -0.1128 -0.0364)
OKLCH	oklch(87.87% 0.119 197.9)
XYZ	xyz(52.5167, 71.0235, 95.7179)
Luminance	0.7103 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66EFF3 #F36A66

analogous

#66F3B0 #66EFF3 #66A9F3

triadic

#66EFF3 #F366EF #EFF366

tetradic

#66EFF3 #B066F3 #F36A66 #A9F366

square

#66EFF3 #B066F3 #F36A66 #A9F366

split-complementary

#66EFF3 #F366A9 #F3B066

monochromatic

#10C9CE #2DE9EF #66EFF3 #9FF5F7 #D7FBFC

Accessibility & contrast

On white

1.38

#66EFF3 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

15.21

#66EFF3 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66EFF3

15.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66EFF3	#FFFFFF	#000000	##000000
##66EFF3	1.00	1.38	15.21	15.21
#FFFFFF	1.38	1.00	21.00	21.00
#000000	15.21	21.00	1.00	1.00
##000000	15.21	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E0E5F4

Deuteranopia (green-blind)

#CAD4F4

Tritanopia (blue-blind)

#00F6F0

Achromatopsia (no color)

#DBDBDB

Design tokens & code

CSS

--color: #66eff3;
/* rgb */ color: rgb(102, 239, 243);
/* oklch */ color: oklch(87.9% 0.119 197.9);

Tailwind

colors: {
  custom: {
    50: '#9ff4f7',
    500: '#66eff3',
    950: '#000000',
  },
}

SCSS

$custom: #66eff3;
$custom-light: #9ff4f7;
$custom-dark: #000000;

JSON

{
  "hex": "#66eff3",
  "rgb": {
    "r": 102,
    "g": 239,
    "b": 243
  },
  "hsl": {
    "h": 181.702,
    "s": 85.455,
    "l": 67.647
  },
  "oklch": {
    "l": 0.8787,
    "c": 0.11855,
    "h": 197.9
  },
  "luminance": 0.71029
}

Semantic roles & 50–950 ramp

primary

#66EFF3

secondary

#CA3733

accent

#0A04E2

background

#FDFFFF

surface

#F7FEFE

border

#D0D6D6

text

#101717

muted

#818585

Preview Lab

Preview with #66EFF3

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

Preview Lab → · Contrast checker → · Palette generator →