#ECF387#ECF387

#ECF387 is a very light, vivid yellow. Relative luminance 0.837; OKLCH L 93.6% C 0.132 H 111.9°. Best body text is #000000 at 17.74:1 contrast (WCAG AA passes).

Color values

HEX	#ECF387
RGB	rgb(236, 243, 135)
HSL	hsl(64, 82%, 74%)
HSV	hsv(64, 44%, 95%)
CMYK	cmyk(2.9%, 0%, 44.4%, 4.7%)
CIE-LAB	lab(93.31, -17.47, 51.04)
CIE-LCH	lch(93.31, 53.95, 108.89°)
OKLab	oklab(93.63% -0.0493 0.1225)
OKLCH	oklch(93.63% 0.132 111.9)
XYZ	xyz(71.0169, 83.6845, 35.3286)
Luminance	0.8368 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF387 #8E87F3

analogous

#F3C487 #ECF387 #B6F387

triadic

#ECF387 #87ECF3 #F387EC

tetradic

#ECF387 #87F3C4 #8E87F3 #F387B6

square

#ECF387 #87F3C4 #8E87F3 #F387B6

split-complementary

#ECF387 #87B6F3 #C487F3

monochromatic

#DAE818 #E3ED4F #ECF387 #F5F9BF #FBFCE3

Accessibility & contrast

On white

1.18

#ECF387 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.74

#ECF387 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF387

17.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF387	#FFFFFF	#000000	##000000
##ECF387	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)

#FFEA7E

Deuteranopia (green-blind)

#FFED8C

Tritanopia (blue-blind)

#F8E8D9

Achromatopsia (no color)

#ECECEC

Design tokens & code

CSS

--color: #ecf387;
/* rgb */ color: rgb(236, 243, 135);
/* oklch */ color: oklch(93.6% 0.132 111.9);

Tailwind

colors: {
  custom: {
    50: '#f4f7ac',
    500: '#ecf387',
    950: '#000000',
  },
}

SCSS

$custom: #ecf387;
$custom-light: #f4f7ac;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf387",
  "rgb": {
    "r": 236,
    "g": 243,
    "b": 135
  },
  "hsl": {
    "h": 63.889,
    "s": 81.818,
    "l": 74.118
  },
  "oklch": {
    "l": 0.93626,
    "c": 0.13201,
    "h": 111.9
  },
  "luminance": 0.83683
}

Semantic roles & 50–950 ramp

primary

#ECF387

secondary

#574FCF

accent

#07DE15

background

#FFFFFD

surface

#FFFEF7

border

#D7D6D0

text

#171710

muted

#858581

Preview Lab

Preview with #ECF387

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

Preview Lab → · Contrast checker → · Palette generator →