#EFF3FF#EFF3FF

#EFF3FF is a very light, near-neutral blue. Relative luminance 0.897; OKLCH L 96.5% C 0.017 H 271.2°. Best body text is #000000 at 18.93:1 contrast (WCAG AA passes).

Color values

HEX	#EFF3FF
RGB	rgb(239, 243, 255)
HSL	hsl(225, 100%, 97%)
HSV	hsv(225, 6%, 100%)
CMYK	cmyk(6.3%, 4.7%, 0%, 0%)
CIE-LAB	lab(95.86, 0.87, -6.21)
CIE-LCH	lch(95.86, 6.28, 278.00°)
OKLab	oklab(96.46% 0.0004 -0.0166)
OKLCH	oklch(96.46% 0.017 271.2)
XYZ	xyz(85.6937, 89.6714, 107.3820)
Luminance	0.8967 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF3FF #FFFBEF

analogous

#EFFBFF #EFF3FF #F3EFFF

triadic

#EFF3FF #FFEFF3 #F3FFEF

tetradic

#EFF3FF #FFEFFB #FFFBEF #EFFFF3

square

#EFF3FF #FFEFFB #FFFBEF #EFFFF3

split-complementary

#EFF3FF #FFF3EF #FBFFEF

monochromatic

#7597FF #B2C5FF #E0E8FF #E0E8FF #E0E8FF

Accessibility & contrast

On white

1.11

#EFF3FF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.93

#EFF3FF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF3FF

18.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF3FF	#FFFFFF	#000000	##000000
##EFF3FF	1.00	1.11	18.93	18.93
#FFFFFF	1.11	1.00	21.00	21.00
#000000	18.93	21.00	1.00	1.00
##000000	18.93	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#F0F4FF

Deuteranopia (green-blind)

#EFF2FF

Tritanopia (blue-blind)

#ECF5F7

Achromatopsia (no color)

#F3F3F3

Design tokens & code

CSS

--color: #eff3ff;
/* rgb */ color: rgb(239, 243, 255);
/* oklch */ color: oklch(96.5% 0.017 271.2);

Tailwind

colors: {
  custom: {
    50: '#f4f7ff',
    500: '#eff3ff',
    950: '#000000',
  },
}

SCSS

$custom: #eff3ff;
$custom-light: #f4f7ff;
$custom-dark: #000000;

JSON

{
  "hex": "#eff3ff",
  "rgb": {
    "r": 239,
    "g": 243,
    "b": 255
  },
  "hsl": {
    "h": 225,
    "s": 100,
    "l": 96.863
  },
  "oklch": {
    "l": 0.96461,
    "c": 0.01662,
    "h": 271.2
  },
  "luminance": 0.89672
}

Semantic roles & 50–950 ramp

primary

#EFF3FF

secondary

#EFDCA3

accent

#AC00E6

background

#FFFFFF

surface

#FEFEFF

border

#D6D6D7

text

#171718

muted

#858586

Preview Lab

Preview with #EFF3FF

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

Preview Lab → · Contrast checker → · Palette generator →