#ECEF55#ECEF55

#ECEF55 is a very light, vivid yellow. Relative luminance 0.802; OKLCH L 92.3% C 0.171 H 110.4°. Best body text is #000000 at 17.04:1 contrast (WCAG AA passes).

Color values

HEX	#ECEF55
RGB	rgb(236, 239, 85)
HSL	hsl(61, 83%, 64%)
HSV	hsv(61, 64%, 94%)
CMYK	cmyk(1.3%, 0%, 64.4%, 6.3%)
CIE-LAB	lab(91.78, -19.38, 71.13)
CIE-LCH	lch(91.78, 73.72, 105.24°)
OKLab	oklab(92.25% -0.0596 0.1603)
OKLCH	oklch(92.25% 0.171 110.4)
XYZ	xyz(67.1004, 80.2235, 20.5426)
Luminance	0.8022 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECEF55 #5855EF

analogous

#EFA555 #ECEF55 #9FEF55

triadic

#ECEF55 #55ECEF #EF55EC

tetradic

#ECEF55 #55EFA5 #5855EF #EF559F

square

#ECEF55 #55EFA5 #5855EF #EF559F

split-complementary

#ECEF55 #559FEF #A555EF

monochromatic

#B5B811 #E6EA1D #ECEF55 #F2F48D #F9FAC5

Accessibility & contrast

On white

1.23

#ECEF55 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.04

#ECEF55 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECEF55

17.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECEF55	#FFFFFF	#000000	##000000
##ECEF55	1.00	1.23	17.04	17.04
#FFFFFF	1.23	1.00	21.00	21.00
#000000	17.04	21.00	1.00	1.00
##000000	17.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE540

Deuteranopia (green-blind)

#FFEA5F

Tritanopia (blue-blind)

#FCE1D0

Achromatopsia (no color)

#E7E7E7

Design tokens & code

CSS

--color: #ecef55;
/* rgb */ color: rgb(236, 239, 85);
/* oklch */ color: oklch(92.3% 0.171 110.4);

Tailwind

colors: {
  custom: {
    50: '#f5f48c',
    500: '#ecef55',
    950: '#000000',
  },
}

SCSS

$custom: #ecef55;
$custom-light: #f5f48c;
$custom-dark: #000000;

JSON

{
  "hex": "#ecef55",
  "rgb": {
    "r": 236,
    "g": 239,
    "b": 85
  },
  "hsl": {
    "h": 61.169,
    "s": 82.796,
    "l": 63.529
  },
  "oklch": {
    "l": 0.92251,
    "c": 0.17107,
    "h": 110.4
  },
  "luminance": 0.80222
}

Semantic roles & 50–950 ramp

primary

#ECEF55

secondary

#3331B7

accent

#06DF0B

background

#FFFFFC

surface

#FFFEF4

border

#D7D6CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #ECEF55

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

Preview Lab → · Contrast checker → · Palette generator →