#ECF35A#ECF35A

#ECF35A is a very light, vivid yellow. Relative luminance 0.827; OKLCH L 93.1% C 0.172 H 111.8°. Best body text is #000000 at 17.53:1 contrast (WCAG AA passes).

Color values

HEX	#ECF35A
RGB	rgb(236, 243, 90)
HSL	hsl(63, 86%, 65%)
HSV	hsv(63, 63%, 95%)
CMYK	cmyk(2.9%, 0%, 63%, 4.7%)
CIE-LAB	lab(92.87, -21.01, 70.31)
CIE-LCH	lch(92.87, 73.39, 106.64°)
OKLab	oklab(93.13% -0.0637 0.1593)
OKLCH	oklch(93.13% 0.172 111.8)
XYZ	xyz(68.4901, 82.6738, 22.0206)
Luminance	0.8267 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF35A #615AF3

analogous

#F3AD5A #ECF35A #9FF35A

triadic

#ECF35A #5AECF3 #F35AEC

tetradic

#ECF35A #5AF3AD #615AF3 #F35A9F

square

#ECF35A #5AF3AD #615AF3 #F35A9F

split-complementary

#ECF35A #5A9FF3 #AD5AF3

monochromatic

#BCC40E #E5EF21 #ECF35A #F3F793 #F9FBCC

Accessibility & contrast

On white

1.20

#ECF35A on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.53

#ECF35A on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF35A

17.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF35A	#FFFFFF	#000000	##000000
##ECF35A	1.00	1.20	17.53	17.53
#FFFFFF	1.20	1.00	21.00	21.00
#000000	17.53	21.00	1.00	1.00
##000000	17.53	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE946

Deuteranopia (green-blind)

#FFEC64

Tritanopia (blue-blind)

#FBE5D3

Achromatopsia (no color)

#EAEAEA

Design tokens & code

CSS

--color: #ecf35a;
/* rgb */ color: rgb(236, 243, 90);
/* oklch */ color: oklch(93.1% 0.172 111.8);

Tailwind

colors: {
  custom: {
    50: '#f5f690',
    500: '#ecf35a',
    950: '#000000',
  },
}

SCSS

$custom: #ecf35a;
$custom-light: #f5f690;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf35a",
  "rgb": {
    "r": 236,
    "g": 243,
    "b": 90
  },
  "hsl": {
    "h": 62.745,
    "s": 86.441,
    "l": 65.294
  },
  "oklch": {
    "l": 0.93131,
    "c": 0.17161,
    "h": 111.8
  },
  "luminance": 0.82672
}

Semantic roles & 50–950 ramp

primary

#ECF35A

secondary

#3630C2

accent

#03E30D

background

#FFFFFC

surface

#FFFEF4

border

#D7D6CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #ECF35A

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

Preview Lab → · Contrast checker → · Palette generator →