#ECFB6B#ECFB6B

#ECFB6B is a very light, vivid yellow. Relative luminance 0.879; OKLCH L 95.0% C 0.167 H 114.6°. Best body text is #000000 at 18.58:1 contrast (WCAG AA passes).

Color values

HEX	#ECFB6B
RGB	rgb(236, 251, 107)
HSL	hsl(66, 95%, 70%)
HSV	hsv(66, 57%, 98%)
CMYK	cmyk(6%, 0%, 57.4%, 1.6%)
CIE-LAB	lab(95.11, -23.69, 65.78)
CIE-LCH	lch(95.11, 69.92, 109.80°)
OKLab	oklab(94.97% -0.0696 0.1519)
OKLCH	oklch(94.97% 0.167 114.6)
XYZ	xyz(71.7446, 87.8899, 27.0921)
Luminance	0.8789 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECFB6B #7A6BFB

analogous

#FBC26B #ECFB6B #A4FB6B

triadic

#ECFB6B #6BECFB #FB6BEC

tetradic

#ECFB6B #6BFBC2 #7A6BFB #FB6BA4

square

#ECFB6B #6BFBC2 #7A6BFB #FB6BA4

split-complementary

#ECFB6B #6BA4FB #C26BFB

monochromatic

#CEE506 #E4F92F #ECFB6B #F4FDA7 #FBFEE1

Accessibility & contrast

On white

1.13

#ECFB6B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.58

#ECFB6B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECFB6B

18.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECFB6B	#FFFFFF	#000000	##000000
##ECFB6B	1.00	1.13	18.58	18.58
#FFFFFF	1.13	1.00	21.00	21.00
#000000	18.58	21.00	1.00	1.00
##000000	18.58	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF05B

Deuteranopia (green-blind)

#FFF274

Tritanopia (blue-blind)

#FAEEDC

Achromatopsia (no color)

#F1F1F1

Design tokens & code

CSS

--color: #ecfb6b;
/* rgb */ color: rgb(236, 251, 107);
/* oklch */ color: oklch(95.0% 0.167 114.6);

Tailwind

colors: {
  custom: {
    50: '#f5fc9a',
    500: '#ecfb6b',
    950: '#000000',
  },
}

SCSS

$custom: #ecfb6b;
$custom-light: #f5fc9a;
$custom-dark: #000000;

JSON

{
  "hex": "#ecfb6b",
  "rgb": {
    "r": 236,
    "g": 251,
    "b": 107
  },
  "hsl": {
    "h": 66.25,
    "s": 94.737,
    "l": 70.196
  },
  "oklch": {
    "l": 0.9497,
    "c": 0.16711,
    "h": 114.6
  },
  "luminance": 0.87889
}

Semantic roles & 50–950 ramp

primary

#ECFB6B

secondary

#4534D6

accent

#00E618

background

#FFFFFC

surface

#FFFFF5

border

#D7D7CF

text

#17170E

muted

#85857F

Preview Lab

Preview with #ECFB6B

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

Preview Lab → · Contrast checker → · Palette generator →