#ECFB5C#ECFB5C

#ECFB5C is a very light, vivid yellow. Relative luminance 0.876; OKLCH L 94.8% C 0.179 H 114.4°. Best body text is #000000 at 18.52:1 contrast (WCAG AA passes).

Color values

HEX	#ECFB5C
RGB	rgb(236, 251, 92)
HSL	hsl(66, 95%, 67%)
HSV	hsv(66, 63%, 98%)
CMYK	cmyk(6%, 0%, 63.3%, 1.6%)
CIE-LAB	lab(94.99, -24.70, 71.76)
CIE-LCH	lch(94.99, 75.89, 108.99°)
OKLab	oklab(94.83% -0.0739 0.1627)
OKLCH	oklch(94.83% 0.179 114.4)
XYZ	xyz(71.0228, 87.6012, 23.2905)
Luminance	0.8760 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECFB5C #6B5CFB

analogous

#FBBA5C #ECFB5C #9DFB5C

triadic

#ECFB5C #5CECFB #FB5CEC

tetradic

#ECFB5C #5CFBBA #6B5CFB #FB5C9D

square

#ECFB5C #5CFBBA #6B5CFB #FB5C9D

split-complementary

#ECFB5C #5C9DFB #BA5CFB

monochromatic

#C4D705 #E5FA20 #ECFB5C #F3FC98 #FAFED3

Accessibility & contrast

On white

1.13

#ECFB5C on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.52

#ECFB5C on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECFB5C

18.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECFB5C	#FFFFFF	#000000	##000000
##ECFB5C	1.00	1.13	18.52	18.52
#FFFFFF	1.13	1.00	21.00	21.00
#000000	18.52	21.00	1.00	1.00
##000000	18.52	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEF47

Deuteranopia (green-blind)

#FFF267

Tritanopia (blue-blind)

#FAEDDA

Achromatopsia (no color)

#F1F1F1

Design tokens & code

CSS

--color: #ecfb5c;
/* rgb */ color: rgb(236, 251, 92);
/* oklch */ color: oklch(94.8% 0.179 114.4);

Tailwind

colors: {
  custom: {
    50: '#f5fc91',
    500: '#ecfb5c',
    950: '#000000',
  },
}

SCSS

$custom: #ecfb5c;
$custom-light: #f5fc91;
$custom-dark: #000000;

JSON

{
  "hex": "#ecfb5c",
  "rgb": {
    "r": 236,
    "g": 251,
    "b": 92
  },
  "hsl": {
    "h": 65.66,
    "s": 95.21,
    "l": 67.255
  },
  "oklch": {
    "l": 0.94833,
    "c": 0.17866,
    "h": 114.4
  },
  "luminance": 0.876
}

Semantic roles & 50–950 ramp

primary

#ECFB5C

secondary

#3A2AD1

accent

#00E616

background

#FFFFFC

surface

#FFFFF4

border

#D7D7CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #ECFB5C

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

Preview Lab → · Contrast checker → · Palette generator →