#ECFA58#ECFA58

#ECFA58 is a very light, vivid yellow. Relative luminance 0.869; OKLCH L 94.6% C 0.180 H 114.1°. Best body text is #000000 at 18.38:1 contrast (WCAG AA passes).

Color values

HEX	#ECFA58
RGB	rgb(236, 250, 88)
HSL	hsl(65, 94%, 66%)
HSV	hsv(65, 65%, 98%)
CMYK	cmyk(5.6%, 0%, 64.8%, 2%)
CIE-LAB	lab(94.70, -24.46, 72.99)
CIE-LCH	lch(94.70, 76.98, 108.53°)
OKLab	oklab(94.59% -0.0736 0.1647)
OKLCH	oklch(94.59% 0.18 114.1)
XYZ	xyz(70.5410, 86.9100, 22.2899)
Luminance	0.8691 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECFA58 #6658FA

analogous

#FAB758 #ECFA58 #9BFA58

triadic

#ECFA58 #58ECFA #FA58EC

tetradic

#ECFA58 #58FAB7 #6658FA #FA589B

square

#ECFA58 #58FAB7 #6658FA #FA589B

split-complementary

#ECFA58 #589BFA #B758FA

monochromatic

#C0D106 #E5F81D #ECFA58 #F3FC93 #FAFECF

Accessibility & contrast

On white

1.14

#ECFA58 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.38

#ECFA58 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECFA58

18.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECFA58	#FFFFFF	#000000	##000000
##ECFA58	1.00	1.14	18.38	18.38
#FFFFFF	1.14	1.00	21.00	21.00
#000000	18.38	21.00	1.00	1.00
##000000	18.38	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEE41

Deuteranopia (green-blind)

#FFF163

Tritanopia (blue-blind)

#FBECD9

Achromatopsia (no color)

#F0F0F0

Design tokens & code

CSS

--color: #ecfa58;
/* rgb */ color: rgb(236, 250, 88);
/* oklch */ color: oklch(94.6% 0.180 114.1);

Tailwind

colors: {
  custom: {
    50: '#f5fb8f',
    500: '#ecfa58',
    950: '#000000',
  },
}

SCSS

$custom: #ecfa58;
$custom-light: #f5fb8f;
$custom-dark: #000000;

JSON

{
  "hex": "#ecfa58",
  "rgb": {
    "r": 236,
    "g": 250,
    "b": 88
  },
  "hsl": {
    "h": 65.185,
    "s": 94.186,
    "l": 66.275
  },
  "oklch": {
    "l": 0.94589,
    "c": 0.1804,
    "h": 114.1
  },
  "luminance": 0.86909
}

Semantic roles & 50–950 ramp

primary

#ECFA58

secondary

#382ACC

accent

#00E614

background

#FFFFFC

surface

#FFFFF4

border

#D7D7CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #ECFA58

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

Preview Lab → · Contrast checker → · Palette generator →