#ECFB53#ECFB53

#ECFB53 is a very light, vivid yellow. Relative luminance 0.875; OKLCH L 94.8% C 0.185 H 114.3°. Best body text is #000000 at 18.49:1 contrast (WCAG AA passes).

Color values

HEX	#ECFB53
RGB	rgb(236, 251, 83)
HSL	hsl(65, 95%, 65%)
HSV	hsv(65, 67%, 98%)
CMYK	cmyk(6%, 0%, 66.9%, 1.6%)
CIE-LAB	lab(94.93, -25.22, 75.08)
CIE-LCH	lch(94.93, 79.21, 108.56°)
OKLab	oklab(94.76% -0.0762 0.1684)
OKLCH	oklch(94.76% 0.185 114.3)
XYZ	xyz(70.6525, 87.4530, 21.3402)
Luminance	0.8745 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECFB53 #6253FB

analogous

#FBB653 #ECFB53 #98FB53

triadic

#ECFB53 #53ECFB #FB53EC

tetradic

#ECFB53 #53FBB6 #6253FB #FB5398

square

#ECFB53 #53FBB6 #6253FB #FB5398

split-complementary

#ECFB53 #5398FB #B653FB

monochromatic

#BDCF05 #E5FA17 #ECFB53 #F3FC8F #F9FECB

Accessibility & contrast

On white

1.14

#ECFB53 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.49

#ECFB53 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECFB53

18.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECFB53	#FFFFFF	#000000	##000000
##ECFB53	1.00	1.14	18.49	18.49
#FFFFFF	1.14	1.00	21.00	21.00
#000000	18.49	21.00	1.00	1.00
##000000	18.49	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEF39

Deuteranopia (green-blind)

#FFF25F

Tritanopia (blue-blind)

#FBEDD9

Achromatopsia (no color)

#F0F0F0

Design tokens & code

CSS

--color: #ecfb53;
/* rgb */ color: rgb(236, 251, 83);
/* oklch */ color: oklch(94.8% 0.185 114.3);

Tailwind

colors: {
  custom: {
    50: '#f6fc8c',
    500: '#ecfb53',
    950: '#000000',
  },
}

SCSS

$custom: #ecfb53;
$custom-light: #f6fc8c;
$custom-dark: #000000;

JSON

{
  "hex": "#ecfb53",
  "rgb": {
    "r": 236,
    "g": 251,
    "b": 83
  },
  "hsl": {
    "h": 65.357,
    "s": 95.455,
    "l": 65.49
  },
  "oklch": {
    "l": 0.94763,
    "c": 0.1848,
    "h": 114.3
  },
  "luminance": 0.87452
}

Semantic roles & 50–950 ramp

primary

#ECFB53

secondary

#3728CA

accent

#00E614

background

#FFFFFC

surface

#FFFFF4

border

#D7D7CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #ECFB53

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

Preview Lab → · Contrast checker → · Palette generator →