#EFF9FF#EFF9FF

#EFF9FF is a very light, near-neutral cyan. Relative luminance 0.933; OKLCH L 97.6% C 0.013 H 233.7°. Best body text is #000000 at 19.66:1 contrast (WCAG AA passes).

Color values

HEX	#EFF9FF
RGB	rgb(239, 249, 255)
HSL	hsl(203, 100%, 97%)
HSV	hsv(203, 6%, 100%)
CMYK	cmyk(6.3%, 2.4%, 0%, 0%)
CIE-LAB	lab(97.36, -2.18, -4.01)
CIE-LCH	lch(97.36, 4.56, 241.48°)
OKLab	oklab(97.64% -0.0079 -0.0107)
OKLCH	oklch(97.64% 0.013 233.7)
XYZ	xyz(87.5186, 93.3214, 107.9904)
Luminance	0.9332 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF9FF #FFF5EF

analogous

#EFFFFD #EFF9FF #EFF1FF

triadic

#EFF9FF #FFEFF9 #F9FFEF

tetradic

#EFF9FF #FDEFFF #FFF5EF #F1FFEF

square

#EFF9FF #FDEFFF #FFF5EF #F1FFEF

split-complementary

#EFF9FF #FFEFF1 #FFFDEF

monochromatic

#75CBFF #B2E2FF #E0F4FF #E0F4FF #E0F4FF

Accessibility & contrast

On white

1.07

#EFF9FF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.66

#EFF9FF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF9FF

19.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF9FF	#FFFFFF	#000000	##000000
##EFF9FF	1.00	1.07	19.66	19.66
#FFFFFF	1.07	1.00	21.00	21.00
#000000	19.66	21.00	1.00	1.00
##000000	19.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#F6F8FF

Deuteranopia (green-blind)

#F4F7FF

Tritanopia (blue-blind)

#EBFBFB

Achromatopsia (no color)

#F7F7F7

Design tokens & code

CSS

--color: #eff9ff;
/* rgb */ color: rgb(239, 249, 255);
/* oklch */ color: oklch(97.6% 0.013 233.7);

Tailwind

colors: {
  custom: {
    50: '#f4fbff',
    500: '#eff9ff',
    950: '#000000',
  },
}

SCSS

$custom: #eff9ff;
$custom-light: #f4fbff;
$custom-dark: #000000;

JSON

{
  "hex": "#eff9ff",
  "rgb": {
    "r": 239,
    "g": 249,
    "b": 255
  },
  "hsl": {
    "h": 202.5,
    "s": 100,
    "l": 96.863
  },
  "oklch": {
    "l": 0.97638,
    "c": 0.01331,
    "h": 233.7
  },
  "luminance": 0.93322
}

Semantic roles & 50–950 ramp

primary

#EFF9FF

secondary

#EFC0A3

accent

#5600E6

background

#FFFFFF

surface

#FEFFFF

border

#D6D7D7

text

#171718

muted

#858586

Preview Lab

Preview with #EFF9FF

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

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