#ECEF64#ECEF64

#ECEF64 is a very light, vivid yellow. Relative luminance 0.805; OKLCH L 92.4% C 0.160 H 110.3°. Best body text is #000000 at 17.10:1 contrast (WCAG AA passes).

Color values

HEX	#ECEF64
RGB	rgb(236, 239, 100)
HSL	hsl(61, 81%, 66%)
HSV	hsv(61, 58%, 94%)
CMYK	cmyk(1.3%, 0%, 58.2%, 6.3%)
CIE-LAB	lab(91.90, -18.43, 65.19)
CIE-LCH	lch(91.90, 67.75, 105.79°)
OKLab	oklab(92.38% -0.0555 0.1498)
OKLCH	oklch(92.38% 0.16 110.3)
XYZ	xyz(67.7607, 80.4876, 24.0203)
Luminance	0.8049 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECEF64 #6764EF

analogous

#EFAD64 #ECEF64 #A7EF64

triadic

#ECEF64 #64ECEF #EF64EC

tetradic

#ECEF64 #64EFAD #6764EF #EF64A7

square

#ECEF64 #64EFAD #6764EF #EF64A7

split-complementary

#ECEF64 #64A7EF #AD64EF

monochromatic

#C1C414 #E5E92D #ECEF64 #F3F59B #FAFAD3

Accessibility & contrast

On white

1.23

#ECEF64 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.10

#ECEF64 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECEF64

17.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECEF64	#FFFFFF	#000000	##000000
##ECEF64	1.00	1.23	17.10	17.10
#FFFFFF	1.23	1.00	21.00	21.00
#000000	17.10	21.00	1.00	1.00
##000000	17.10	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE554

Deuteranopia (green-blind)

#FFEA6C

Tritanopia (blue-blind)

#FBE1D1

Achromatopsia (no color)

#E8E8E8

Design tokens & code

CSS

--color: #ecef64;
/* rgb */ color: rgb(236, 239, 100);
/* oklch */ color: oklch(92.4% 0.160 110.3);

Tailwind

colors: {
  custom: {
    50: '#f5f495',
    500: '#ecef64',
    950: '#000000',
  },
}

SCSS

$custom: #ecef64;
$custom-light: #f5f495;
$custom-dark: #000000;

JSON

{
  "hex": "#ecef64",
  "rgb": {
    "r": 236,
    "g": 239,
    "b": 100
  },
  "hsl": {
    "h": 61.295,
    "s": 81.287,
    "l": 66.471
  },
  "oklch": {
    "l": 0.92383,
    "c": 0.15977,
    "h": 110.3
  },
  "luminance": 0.80486
}

Semantic roles & 50–950 ramp

primary

#ECEF64

secondary

#3835C2

accent

#08DE0C

background

#FFFFFC

surface

#FFFEF5

border

#D7D6CF

text

#17170E

muted

#85857F

Preview Lab

Preview with #ECEF64

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

Preview Lab → · Contrast checker → · Palette generator →