#ECFB6C#ECFB6C

#ECFB6C is a very light, vivid yellow. Relative luminance 0.879; OKLCH L 95.0% C 0.166 H 114.6°. Best body text is #000000 at 18.58:1 contrast (WCAG AA passes).

Color values

HEX	#ECFB6C
RGB	rgb(236, 251, 108)
HSL	hsl(66, 95%, 70%)
HSV	hsv(66, 57%, 98%)
CMYK	cmyk(6%, 0%, 57%, 1.6%)
CIE-LAB	lab(95.12, -23.61, 65.37)
CIE-LCH	lch(95.12, 69.50, 109.86°)
OKLab	oklab(94.98% -0.0693 0.1512)
OKLCH	oklch(94.98% 0.166 114.6)
XYZ	xyz(71.7975, 87.9111, 27.3708)
Luminance	0.8791 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECFB6C #7B6CFB

analogous

#FBC36C #ECFB6C #A4FB6C

triadic

#ECFB6C #6CECFB #FB6CEC

tetradic

#ECFB6C #6CFBC3 #7B6CFB #FB6CA4

square

#ECFB6C #6CFBC3 #7B6CFB #FB6CA4

split-complementary

#ECFB6C #6CA4FB #C36CFB

monochromatic

#CFE606 #E4F930 #ECFB6C #F4FDA8 #FBFEE1

Accessibility & contrast

On white

1.13

#ECFB6C on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.58

#ECFB6C on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECFB6C

18.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECFB6C	#FFFFFF	#000000	##000000
##ECFB6C	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)

#FFF05C

Deuteranopia (green-blind)

#FFF275

Tritanopia (blue-blind)

#FAEEDC

Achromatopsia (no color)

#F1F1F1

Design tokens & code

CSS

--color: #ecfb6c;
/* rgb */ color: rgb(236, 251, 108);
/* oklch */ color: oklch(95.0% 0.166 114.6);

Tailwind

colors: {
  custom: {
    50: '#f5fc9b',
    500: '#ecfb6c',
    950: '#000000',
  },
}

SCSS

$custom: #ecfb6c;
$custom-light: #f5fc9b;
$custom-dark: #000000;

JSON

{
  "hex": "#ecfb6c",
  "rgb": {
    "r": 236,
    "g": 251,
    "b": 108
  },
  "hsl": {
    "h": 66.294,
    "s": 94.702,
    "l": 70.392
  },
  "oklch": {
    "l": 0.9498,
    "c": 0.16629,
    "h": 114.6
  },
  "luminance": 0.8791
}

Semantic roles & 50–950 ramp

primary

#ECFB6C

secondary

#4635D6

accent

#00E618

background

#FFFFFC

surface

#FFFFF5

border

#D7D7CF

text

#17170E

muted

#85857F

Preview Lab

Preview with #ECFB6C

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

Preview Lab → · Contrast checker → · Palette generator →