#ECF388#ECF388

#ECF388 is a very light, vivid yellow. Relative luminance 0.837; OKLCH L 93.6% C 0.131 H 111.9°. Best body text is #000000 at 17.74:1 contrast (WCAG AA passes).

Color values

HEX	#ECF388
RGB	rgb(236, 243, 136)
HSL	hsl(64, 82%, 74%)
HSV	hsv(64, 44%, 95%)
CMYK	cmyk(2.9%, 0%, 44%, 4.7%)
CIE-LAB	lab(93.33, -17.37, 50.58)
CIE-LCH	lch(93.33, 53.48, 108.95°)
OKLab	oklab(93.64% -0.0489 0.1215)
OKLCH	oklch(93.64% 0.131 111.9)
XYZ	xyz(71.0876, 83.7128, 35.7012)
Luminance	0.8371 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF388 #8F88F3

analogous

#F3C588 #ECF388 #B7F388

triadic

#ECF388 #88ECF3 #F388EC

tetradic

#ECF388 #88F3C5 #8F88F3 #F388B7

square

#ECF388 #88F3C5 #8F88F3 #F388B7

split-complementary

#ECF388 #88B7F3 #C588F3

monochromatic

#DAE819 #E3ED50 #ECF388 #F5F9C0 #FBFCE3

Accessibility & contrast

On white

1.18

#ECF388 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.74

#ECF388 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF388

17.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF388	#FFFFFF	#000000	##000000
##ECF388	1.00	1.18	17.74	17.74
#FFFFFF	1.18	1.00	21.00	21.00
#000000	17.74	21.00	1.00	1.00
##000000	17.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEA7F

Deuteranopia (green-blind)

#FFED8D

Tritanopia (blue-blind)

#F8E8DA

Achromatopsia (no color)

#ECECEC

Design tokens & code

CSS

--color: #ecf388;
/* rgb */ color: rgb(236, 243, 136);
/* oklch */ color: oklch(93.6% 0.131 111.9);

Tailwind

colors: {
  custom: {
    50: '#f4f7ac',
    500: '#ecf388',
    950: '#000000',
  },
}

SCSS

$custom: #ecf388;
$custom-light: #f4f7ac;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf388",
  "rgb": {
    "r": 236,
    "g": 243,
    "b": 136
  },
  "hsl": {
    "h": 63.925,
    "s": 81.679,
    "l": 74.314
  },
  "oklch": {
    "l": 0.9364,
    "c": 0.13098,
    "h": 111.9
  },
  "luminance": 0.83712
}

Semantic roles & 50–950 ramp

primary

#ECF388

secondary

#5850CF

accent

#07DE15

background

#FFFFFD

surface

#FEFEF7

border

#D6D6D0

text

#171710

muted

#858581

Preview Lab

Preview with #ECF388

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

Preview Lab → · Contrast checker → · Palette generator →