#EFF3FB#EFF3FB

#EFF3FB is a very light, near-neutral blue. Relative luminance 0.894; OKLCH L 96.3% C 0.012 H 264.5°. Best body text is #000000 at 18.88:1 contrast (WCAG AA passes).

Color values

HEX	#EFF3FB
RGB	rgb(239, 243, 251)
HSL	hsl(220, 60%, 96%)
HSV	hsv(220, 5%, 98%)
CMYK	cmyk(4.8%, 3.2%, 0%, 1.6%)
CIE-LAB	lab(95.75, 0.13, -4.30)
CIE-LCH	lch(95.75, 4.30, 271.73°)
OKLab	oklab(96.34% -0.0011 -0.0115)
OKLCH	oklch(96.34% 0.012 264.5)
XYZ	xyz(85.0565, 89.4165, 104.0262)
Luminance	0.8942 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF3FB #FBF7EF

analogous

#EFF9FB #EFF3FB #F1EFFB

triadic

#EFF3FB #FBEFF3 #F3FBEF

tetradic

#EFF3FB #FBEFF9 #FBF7EF #EFFBF1

square

#EFF3FB #FBEFF9 #FBF7EF #EFFBF1

split-complementary

#EFF3FB #FBF1EF #F9FBEF

monochromatic

#8DAAE3 #BECEEF #E7EDF9 #E7EDF9 #E7EDF9

Accessibility & contrast

On white

1.11

#EFF3FB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.88

#EFF3FB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF3FB

18.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF3FB	#FFFFFF	#000000	##000000
##EFF3FB	1.00	1.11	18.88	18.88
#FFFFFF	1.11	1.00	21.00	21.00
#000000	18.88	21.00	1.00	1.00
##000000	18.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#F1F3FB

Deuteranopia (green-blind)

#F0F2FB

Tritanopia (blue-blind)

#ECF5F5

Achromatopsia (no color)

#F3F3F3

Design tokens & code

CSS

--color: #eff3fb;
/* rgb */ color: rgb(239, 243, 251);
/* oklch */ color: oklch(96.3% 0.012 264.5);

Tailwind

colors: {
  custom: {
    50: '#f4f7fc',
    500: '#eff3fb',
    950: '#000000',
  },
}

SCSS

$custom: #eff3fb;
$custom-light: #f4f7fc;
$custom-dark: #000000;

JSON

{
  "hex": "#eff3fb",
  "rgb": {
    "r": 239,
    "g": 243,
    "b": 251
  },
  "hsl": {
    "h": 220,
    "s": 60,
    "l": 96.078
  },
  "oklch": {
    "l": 0.96342,
    "c": 0.01153,
    "h": 264.5
  },
  "luminance": 0.89417
}

Semantic roles & 50–950 ramp

primary

#EFF3FB

secondary

#DFCFB0

accent

#8F1EC8

background

#FFFFFF

surface

#FEFEFF

border

#D6D6D7

text

#171717

muted

#858585

Preview Lab

Preview with #EFF3FB

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

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