#ECEF54#ECEF54

#ECEF54 is a very light, vivid yellow. Relative luminance 0.802; OKLCH L 92.2% C 0.172 H 110.4°. Best body text is #000000 at 17.04:1 contrast (WCAG AA passes).

Color values

HEX	#ECEF54
RGB	rgb(236, 239, 84)
HSL	hsl(61, 83%, 63%)
HSV	hsv(61, 65%, 94%)
CMYK	cmyk(1.3%, 0%, 64.9%, 6.3%)
CIE-LAB	lab(91.78, -19.44, 71.50)
CIE-LCH	lch(91.78, 74.10, 105.21°)
OKLab	oklab(92.24% -0.0599 0.161)
OKLCH	oklch(92.24% 0.172 110.4)
XYZ	xyz(67.0609, 80.2077, 20.3348)
Luminance	0.8021 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECEF54 #5754EF

analogous

#EFA454 #ECEF54 #9EEF54

triadic

#ECEF54 #54ECEF #EF54EC

tetradic

#ECEF54 #54EFA4 #5754EF #EF549E

square

#ECEF54 #54EFA4 #5754EF #EF549E

split-complementary

#ECEF54 #549EEF #A454EF

monochromatic

#B4B711 #E6EA1C #ECEF54 #F2F48C #F8F9C4

Accessibility & contrast

On white

1.23

#ECEF54 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.04

#ECEF54 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECEF54

17.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECEF54	#FFFFFF	#000000	##000000
##ECEF54	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)

#FFE53E

Deuteranopia (green-blind)

#FFEA5E

Tritanopia (blue-blind)

#FCE1D0

Achromatopsia (no color)

#E7E7E7

Design tokens & code

CSS

--color: #ecef54;
/* rgb */ color: rgb(236, 239, 84);
/* oklch */ color: oklch(92.2% 0.172 110.4);

Tailwind

colors: {
  custom: {
    50: '#f6f48c',
    500: '#ecef54',
    950: '#000000',
  },
}

SCSS

$custom: #ecef54;
$custom-light: #f6f48c;
$custom-dark: #000000;

JSON

{
  "hex": "#ecef54",
  "rgb": {
    "r": 236,
    "g": 239,
    "b": 84
  },
  "hsl": {
    "h": 61.161,
    "s": 82.888,
    "l": 63.333
  },
  "oklch": {
    "l": 0.92243,
    "c": 0.17176,
    "h": 110.4
  },
  "luminance": 0.80206
}

Semantic roles & 50–950 ramp

primary

#ECEF54

secondary

#3331B7

accent

#06DF0A

background

#FFFFFC

surface

#FFFEF4

border

#D7D6CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #ECEF54

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

Preview Lab → · Contrast checker → · Palette generator →