#ECFB65#ECFB65

#ECFB65 is a very light, vivid yellow. Relative luminance 0.878; OKLCH L 94.9% C 0.172 H 114.5°. Best body text is #000000 at 18.55:1 contrast (WCAG AA passes).

Color values

HEX	#ECFB65
RGB	rgb(236, 251, 101)
HSL	hsl(66, 95%, 69%)
HSV	hsv(66, 60%, 98%)
CMYK	cmyk(6%, 0%, 59.8%, 1.6%)
CIE-LAB	lab(95.06, -24.11, 68.23)
CIE-LCH	lch(95.06, 72.37, 109.46°)
OKLab	oklab(94.91% -0.0714 0.1564)
OKLCH	oklch(94.91% 0.172 114.5)
XYZ	xyz(71.4398, 87.7680, 25.4869)
Luminance	0.8777 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECFB65 #7465FB

analogous

#FBBF65 #ECFB65 #A1FB65

triadic

#ECFB65 #65ECFB #FB65EC

tetradic

#ECFB65 #65FBBF #7465FB #FB65A1

square

#ECFB65 #65FBBF #7465FB #FB65A1

split-complementary

#ECFB65 #65A1FB #BF65FB

monochromatic

#CAE006 #E5F929 #ECFB65 #F3FDA1 #FBFEDC

Accessibility & contrast

On white

1.13

#ECFB65 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.55

#ECFB65 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECFB65

18.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECFB65	#FFFFFF	#000000	##000000
##ECFB65	1.00	1.13	18.55	18.55
#FFFFFF	1.13	1.00	21.00	21.00
#000000	18.55	21.00	1.00	1.00
##000000	18.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF053

Deuteranopia (green-blind)

#FFF26F

Tritanopia (blue-blind)

#FAEEDB

Achromatopsia (no color)

#F1F1F1

Design tokens & code

CSS

--color: #ecfb65;
/* rgb */ color: rgb(236, 251, 101);
/* oklch */ color: oklch(94.9% 0.172 114.5);

Tailwind

colors: {
  custom: {
    50: '#f5fc97',
    500: '#ecfb65',
    950: '#000000',
  },
}

SCSS

$custom: #ecfb65;
$custom-light: #f5fc97;
$custom-dark: #000000;

JSON

{
  "hex": "#ecfb65",
  "rgb": {
    "r": 236,
    "g": 251,
    "b": 101
  },
  "hsl": {
    "h": 66,
    "s": 94.937,
    "l": 69.02
  },
  "oklch": {
    "l": 0.94912,
    "c": 0.17192,
    "h": 114.5
  },
  "luminance": 0.87767
}

Semantic roles & 50–950 ramp

primary

#ECFB65

secondary

#402FD5

accent

#00E617

background

#FFFFFC

surface

#FFFFF5

border

#D7D7CF

text

#17170E

muted

#85857F

Preview Lab

Preview with #ECFB65

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

Preview Lab → · Contrast checker → · Palette generator →