#ECEF66#ECEF66

#ECEF66 is a very light, vivid yellow. Relative luminance 0.805; OKLCH L 92.4% C 0.158 H 110.3°. Best body text is #000000 at 17.11:1 contrast (WCAG AA passes).

Color values

HEX	#ECEF66
RGB	rgb(236, 239, 102)
HSL	hsl(61, 81%, 67%)
HSV	hsv(61, 57%, 94%)
CMYK	cmyk(1.3%, 0%, 57.3%, 6.3%)
CIE-LAB	lab(91.92, -18.29, 64.36)
CIE-LCH	lch(91.92, 66.91, 105.87°)
OKLab	oklab(92.4% -0.0548 0.1483)
OKLCH	oklch(92.4% 0.158 110.3)
XYZ	xyz(67.8587, 80.5268, 24.5364)
Luminance	0.8053 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECEF66 #6966EF

analogous

#EFAE66 #ECEF66 #A8EF66

triadic

#ECEF66 #66ECEF #EF66EC

tetradic

#ECEF66 #66EFAE #6966EF #EF66A8

square

#ECEF66 #66EFAE #6966EF #EF66A8

split-complementary

#ECEF66 #66A8EF #AE66EF

monochromatic

#C2C615 #E5E92F #ECEF66 #F3F59D #FAFBD5

Accessibility & contrast

On white

1.23

#ECEF66 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.11

#ECEF66 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECEF66

17.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECEF66	#FFFFFF	#000000	##000000
##ECEF66	1.00	1.23	17.11	17.11
#FFFFFF	1.23	1.00	21.00	21.00
#000000	17.11	21.00	1.00	1.00
##000000	17.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE657

Deuteranopia (green-blind)

#FFEA6E

Tritanopia (blue-blind)

#FBE2D2

Achromatopsia (no color)

#E8E8E8

Design tokens & code

CSS

--color: #ecef66;
/* rgb */ color: rgb(236, 239, 102);
/* oklch */ color: oklch(92.4% 0.158 110.3);

Tailwind

colors: {
  custom: {
    50: '#f5f496',
    500: '#ecef66',
    950: '#000000',
  },
}

SCSS

$custom: #ecef66;
$custom-light: #f5f496;
$custom-dark: #000000;

JSON

{
  "hex": "#ecef66",
  "rgb": {
    "r": 236,
    "g": 239,
    "b": 102
  },
  "hsl": {
    "h": 61.314,
    "s": 81.065,
    "l": 66.863
  },
  "oklch": {
    "l": 0.92403,
    "c": 0.15814,
    "h": 110.3
  },
  "luminance": 0.80525
}

Semantic roles & 50–950 ramp

primary

#ECEF66

secondary

#3936C3

accent

#08DD0D

background

#FFFFFC

surface

#FFFEF5

border

#D7D6CF

text

#17170E

muted

#85857F

Preview Lab

Preview with #ECEF66

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

Preview Lab → · Contrast checker → · Palette generator →