#ECF0FB#ECF0FB

#ECF0FB is a very light, near-neutral blue. Relative luminance 0.871; OKLCH L 95.5% C 0.015 H 270.0°. Best body text is #000000 at 18.42:1 contrast (WCAG AA passes).

Color values

HEX	#ECF0FB
RGB	rgb(236, 240, 251)
HSL	hsl(224, 65%, 95%)
HSV	hsv(224, 6%, 98%)
CMYK	cmyk(6%, 4.4%, 0%, 1.6%)
CIE-LAB	lab(94.79, 0.69, -5.75)
CIE-LCH	lch(94.79, 5.79, 276.83°)
OKLab	oklab(95.53% 0 -0.0154)
OKLCH	oklch(95.53% 0.015 270)
XYZ	xyz(83.1614, 87.1176, 103.6823)
Luminance	0.8712 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF0FB #FBF7EC

analogous

#ECF7FB #ECF0FB #EFECFB

triadic

#ECF0FB #FBECF0 #F0FBEC

tetradic

#ECF0FB #FBECF7 #FBF7EC #ECFBEF

square

#ECF0FB #FBECF7 #FBF7EC #ECFBEF

split-complementary

#ECF0FB #FBEFEC #F7FBEC

monochromatic

#87A0E6 #B9C8F0 #E6EBFA #E6EBFA #E6EBFA

Accessibility & contrast

On white

1.14

#ECF0FB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.42

#ECF0FB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF0FB

18.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF0FB	#FFFFFF	#000000	##000000
##ECF0FB	1.00	1.14	18.42	18.42
#FFFFFF	1.14	1.00	21.00	21.00
#000000	18.42	21.00	1.00	1.00
##000000	18.42	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#EDF1FC

Deuteranopia (green-blind)

#ECEFFB

Tritanopia (blue-blind)

#E9F2F3

Achromatopsia (no color)

#F0F0F0

Design tokens & code

CSS

--color: #ecf0fb;
/* rgb */ color: rgb(236, 240, 251);
/* oklch */ color: oklch(95.5% 0.015 270.0);

Tailwind

colors: {
  custom: {
    50: '#f2f4fc',
    500: '#ecf0fb',
    950: '#000000',
  },
}

SCSS

$custom: #ecf0fb;
$custom-light: #f2f4fc;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf0fb",
  "rgb": {
    "r": 236,
    "g": 240,
    "b": 251
  },
  "hsl": {
    "h": 224,
    "s": 65.217,
    "l": 95.49
  },
  "oklch": {
    "l": 0.9553,
    "c": 0.01537,
    "h": 270
  },
  "luminance": 0.87118
}

Semantic roles & 50–950 ramp

primary

#ECF0FB

secondary

#E0D2AB

accent

#9D18CD

background

#FFFFFF

surface

#FEFEFF

border

#D6D6D7

text

#161717

muted

#858585

Preview Lab

Preview with #ECF0FB

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

Preview Lab → · Contrast checker → · Palette generator →