#ECF55D#ECF55D

#ECF55D is a very light, vivid yellow. Relative luminance 0.839; OKLCH L 93.6% C 0.172 H 112.5°. Best body text is #000000 at 17.79:1 contrast (WCAG AA passes).

Color values

HEX	#ECF55D
RGB	rgb(236, 245, 93)
HSL	hsl(64, 88%, 66%)
HSV	hsv(64, 62%, 96%)
CMYK	cmyk(3.7%, 0%, 62%, 3.9%)
CIE-LAB	lab(93.42, -21.78, 69.70)
CIE-LCH	lch(93.42, 73.03, 107.35°)
OKLab	oklab(93.58% -0.0656 0.1585)
OKLCH	oklch(93.58% 0.172 112.5)
XYZ	xyz(69.2221, 83.9295, 22.9073)
Luminance	0.8393 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF55D #665DF5

analogous

#F5B25D #ECF55D #A0F55D

triadic

#ECF55D #5DECF5 #F55DEC

tetradic

#ECF55D #5DF5B2 #665DF5 #F55DA0

square

#ECF55D #5DF5B2 #665DF5 #F55DA0

split-complementary

#ECF55D #5DA0F5 #B25DF5

monochromatic

#C0CB0D #E5F123 #ECF55D #F3F997 #FAFCD0

Accessibility & contrast

On white

1.18

#ECF55D on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.79

#ECF55D on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF55D

17.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF55D	#FFFFFF	#000000	##000000
##ECF55D	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)

#FFEA4A

Deuteranopia (green-blind)

#FFEE67

Tritanopia (blue-blind)

#FBE7D5

Achromatopsia (no color)

#ECECEC

Design tokens & code

CSS

--color: #ecf55d;
/* rgb */ color: rgb(236, 245, 93);
/* oklch */ color: oklch(93.6% 0.172 112.5);

Tailwind

colors: {
  custom: {
    50: '#f5f891',
    500: '#ecf55d',
    950: '#000000',
  },
}

SCSS

$custom: #ecf55d;
$custom-light: #f5f891;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf55d",
  "rgb": {
    "r": 236,
    "g": 245,
    "b": 93
  },
  "hsl": {
    "h": 63.553,
    "s": 88.372,
    "l": 66.275
  },
  "oklch": {
    "l": 0.93576,
    "c": 0.17152,
    "h": 112.5
  },
  "luminance": 0.83928
}

Semantic roles & 50–950 ramp

primary

#ECF55D

secondary

#382FC7

accent

#01E50E

background

#FFFFFC

surface

#FFFEF4

border

#D7D6CE

text

#17170D

muted

#85857F

Preview Lab

Preview with #ECF55D

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

Preview Lab → · Contrast checker → · Palette generator →