#ECF55E#ECF55E

#ECF55E is a very light, vivid yellow. Relative luminance 0.839; OKLCH L 93.6% C 0.171 H 112.5°. Best body text is #000000 at 17.79:1 contrast (WCAG AA passes).

Color values

HEX	#ECF55E
RGB	rgb(236, 245, 94)
HSL	hsl(64, 88%, 66%)
HSV	hsv(64, 62%, 96%)
CMYK	cmyk(3.7%, 0%, 61.6%, 3.9%)
CIE-LAB	lab(93.43, -21.72, 69.31)
CIE-LCH	lch(93.43, 72.64, 107.40°)
OKLab	oklab(93.59% -0.0653 0.1578)
OKLCH	oklch(93.59% 0.171 112.5)
XYZ	xyz(69.2667, 83.9473, 23.1421)
Luminance	0.8395 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF55E #675EF5

analogous

#F5B35E #ECF55E #A1F55E

triadic

#ECF55E #5EECF5 #F55EEC

tetradic

#ECF55E #5EF5B3 #675EF5 #F55EA1

square

#ECF55E #5EF5B3 #675EF5 #F55EA1

split-complementary

#ECF55E #5EA1F5 #B35EF5

monochromatic

#C1CC0D #E5F124 #ECF55E #F3F998 #FAFCD1

Accessibility & contrast

On white

1.18

#ECF55E on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.79

#ECF55E on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF55E

17.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF55E	#FFFFFF	#000000	##000000
##ECF55E	1.00	1.18	17.79	17.79
#FFFFFF	1.18	1.00	21.00	21.00
#000000	17.79	21.00	1.00	1.00
##000000	17.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEA4B

Deuteranopia (green-blind)

#FFEE68

Tritanopia (blue-blind)

#FBE7D6

Achromatopsia (no color)

#ECECEC

Design tokens & code

CSS

--color: #ecf55e;
/* rgb */ color: rgb(236, 245, 94);
/* oklch */ color: oklch(93.6% 0.171 112.5);

Tailwind

colors: {
  custom: {
    50: '#f5f892',
    500: '#ecf55e',
    950: '#000000',
  },
}

SCSS

$custom: #ecf55e;
$custom-light: #f5f892;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf55e",
  "rgb": {
    "r": 236,
    "g": 245,
    "b": 94
  },
  "hsl": {
    "h": 63.576,
    "s": 88.304,
    "l": 66.471
  },
  "oklch": {
    "l": 0.93585,
    "c": 0.17077,
    "h": 112.5
  },
  "luminance": 0.83946
}

Semantic roles & 50–950 ramp

primary

#ECF55E

secondary

#382FC8

accent

#01E50E

background

#FFFFFC

surface

#FFFEF4

border

#D7D6CE

text

#17170D

muted

#85857F

Preview Lab

Preview with #ECF55E

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

Preview Lab → · Contrast checker → · Palette generator →