#ECF45C#ECF45C

#ECF45C is a very light, vivid yellow. Relative luminance 0.833; OKLCH L 93.4% C 0.171 H 112.1°. Best body text is #000000 at 17.66:1 contrast (WCAG AA passes).

Color values

HEX	#ECF45C
RGB	rgb(236, 244, 92)
HSL	hsl(63, 87%, 66%)
HSV	hsv(63, 62%, 96%)
CMYK	cmyk(3.3%, 0%, 62.3%, 4.3%)
CIE-LAB	lab(93.15, -21.37, 69.82)
CIE-LCH	lch(93.15, 73.01, 107.02°)
OKLab	oklab(93.36% -0.0645 0.1586)
OKLCH	oklch(93.36% 0.171 112.1)
XYZ	xyz(68.8764, 83.3085, 22.5750)
Luminance	0.8331 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF45C #645CF4

analogous

#F4B05C #ECF45C #A0F45C

triadic

#ECF45C #5CECF4 #F45CEC

tetradic

#ECF45C #5CF4B0 #645CF4 #F45CA0

square

#ECF45C #5CF4B0 #645CF4 #F45CA0

split-complementary

#ECF45C #5CA0F4 #B05CF4

monochromatic

#BEC80E #E5F023 #ECF45C #F3F895 #F9FCCF

Accessibility & contrast

On white

1.19

#ECF45C on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.66

#ECF45C on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF45C

17.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF45C	#FFFFFF	#000000	##000000
##ECF45C	1.00	1.19	17.66	17.66
#FFFFFF	1.19	1.00	21.00	21.00
#000000	17.66	21.00	1.00	1.00
##000000	17.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE949

Deuteranopia (green-blind)

#FFED66

Tritanopia (blue-blind)

#FBE6D5

Achromatopsia (no color)

#EBEBEB

Design tokens & code

CSS

--color: #ecf45c;
/* rgb */ color: rgb(236, 244, 92);
/* oklch */ color: oklch(93.4% 0.171 112.1);

Tailwind

colors: {
  custom: {
    50: '#f5f791',
    500: '#ecf45c',
    950: '#000000',
  },
}

SCSS

$custom: #ecf45c;
$custom-light: #f5f791;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf45c",
  "rgb": {
    "r": 236,
    "g": 244,
    "b": 92
  },
  "hsl": {
    "h": 63.158,
    "s": 87.356,
    "l": 65.882
  },
  "oklch": {
    "l": 0.93358,
    "c": 0.1712,
    "h": 112.1
  },
  "luminance": 0.83307
}

Semantic roles & 50–950 ramp

primary

#ECF45C

secondary

#372FC5

accent

#02E40D

background

#FFFFFC

surface

#FFFEF4

border

#D7D6CE

text

#17170D

muted

#85857F

Preview Lab

Preview with #ECF45C

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

Preview Lab → · Contrast checker → · Palette generator →