#EFFCFF#EFFCFF

#EFFCFF is a very light, near-neutral cyan. Relative luminance 0.952; OKLCH L 98.2% C 0.014 H 213.1°. Best body text is #000000 at 20.04:1 contrast (WCAG AA passes).

Color values

HEX	#EFFCFF
RGB	rgb(239, 252, 255)
HSL	hsl(191, 100%, 97%)
HSV	hsv(191, 6%, 100%)
CMYK	cmyk(6.3%, 1.2%, 0%, 0%)
CIE-LAB	lab(98.11, -3.69, -2.90)
CIE-LCH	lch(98.11, 4.70, 218.17°)
OKLab	oklab(98.23% -0.012 -0.0078)
OKLCH	oklch(98.23% 0.014 213.1)
XYZ	xyz(88.4533, 95.1907, 108.3019)
Luminance	0.9519 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFFCFF #FFF2EF

analogous

#EFFFFA #EFFCFF #EFF4FF

triadic

#EFFCFF #FFEFFC #FCFFEF

tetradic

#EFFCFF #FAEFFF #FFF2EF #F4FFEF

square

#EFFCFF #FAEFFF #FFF2EF #F4FFEF

split-complementary

#EFFCFF #FFEFF4 #FFFAEF

monochromatic

#75E5FF #B2F1FF #E0F9FF #E0F9FF #E0F9FF

Accessibility & contrast

On white

1.05

#EFFCFF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

20.04

#EFFCFF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFFCFF

20.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFFCFF	#FFFFFF	#000000	##000000
##EFFCFF	1.00	1.05	20.04	20.04
#FFFFFF	1.05	1.00	21.00	21.00
#000000	20.04	21.00	1.00	1.00
##000000	20.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#F9FBFF

Deuteranopia (green-blind)

#F7F9FF

Tritanopia (blue-blind)

#EBFDFD

Achromatopsia (no color)

#FAFAFA

Design tokens & code

CSS

--color: #effcff;
/* rgb */ color: rgb(239, 252, 255);
/* oklch */ color: oklch(98.2% 0.014 213.1);

Tailwind

colors: {
  custom: {
    50: '#f4fdff',
    500: '#effcff',
    950: '#000000',
  },
}

SCSS

$custom: #effcff;
$custom-light: #f4fdff;
$custom-dark: #000000;

JSON

{
  "hex": "#effcff",
  "rgb": {
    "r": 239,
    "g": 252,
    "b": 255
  },
  "hsl": {
    "h": 191.25,
    "s": 100,
    "l": 96.863
  },
  "oklch": {
    "l": 0.9823,
    "c": 0.01428,
    "h": 213.1
  },
  "luminance": 0.95192
}

Semantic roles & 50–950 ramp

primary

#EFFCFF

secondary

#EFB2A3

accent

#2B00E6

background

#FFFFFF

surface

#FEFFFF

border

#D6D7D7

text

#171718

muted

#858586

Preview Lab

Preview with #EFFCFF

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

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