#ECFF8B#ECFF8B

#ECFF8B is a very light, vivid yellow. Relative luminance 0.912; OKLCH L 96.2% C 0.142 H 116.8°. Best body text is #000000 at 19.24:1 contrast (WCAG AA passes).

Color values

HEX	#ECFF8B
RGB	rgb(236, 255, 139)
HSL	hsl(70, 100%, 77%)
HSV	hsv(70, 45%, 100%)
CMYK	cmyk(7.5%, 0%, 45.5%, 0%)
CIE-LAB	lab(96.50, -22.85, 53.06)
CIE-LCH	lch(96.50, 57.77, 113.30°)
OKLab	oklab(96.19% -0.0643 0.1272)
OKLCH	oklch(96.19% 0.143 116.8)
XYZ	xyz(75.0130, 91.2176, 38.0761)
Luminance	0.9122 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECFF8B #9E8BFF

analogous

#FFD88B #ECFF8B #B2FF8B

triadic

#ECFF8B #8BECFF #FF8BEC

tetradic

#ECFF8B #8BFFD8 #9E8BFF #FF8BB2

square

#ECFF8B #8BFFD8 #9E8BFF #FF8BB2

split-complementary

#ECFF8B #8BB2FF #D88BFF

monochromatic

#D8FF11 #E2FF4E #ECFF8B #F6FFC8 #FAFFE0

Accessibility & contrast

On white

1.09

#ECFF8B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.24

#ECFF8B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECFF8B

19.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECFF8B	#FFFFFF	#000000	##000000
##ECFF8B	1.00	1.09	19.24	19.24
#FFFFFF	1.09	1.00	21.00	21.00
#000000	19.24	21.00	1.00	1.00
##000000	19.24	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF481

Deuteranopia (green-blind)

#FFF691

Tritanopia (blue-blind)

#F7F4E4

Achromatopsia (no color)

#F5F5F5

Design tokens & code

CSS

--color: #ecff8b;
/* rgb */ color: rgb(236, 255, 139);
/* oklch */ color: oklch(96.2% 0.142 116.8);

Tailwind

colors: {
  custom: {
    50: '#f4ffaf',
    500: '#ecff8b',
    950: '#000000',
  },
}

SCSS

$custom: #ecff8b;
$custom-light: #f4ffaf;
$custom-dark: #000000;

JSON

{
  "hex": "#ecff8b",
  "rgb": {
    "r": 236,
    "g": 255,
    "b": 139
  },
  "hsl": {
    "h": 69.828,
    "s": 100,
    "l": 77.255
  },
  "oklch": {
    "l": 0.96186,
    "c": 0.1425,
    "h": 116.8
  },
  "luminance": 0.91217
}

Semantic roles & 50–950 ramp

primary

#ECFF8B

secondary

#664EE0

accent

#00E626

background

#FFFFFD

surface

#FFFFF7

border

#D7D7D0

text

#171810

muted

#858681

Preview Lab

Preview with #ECFF8B

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

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