#ECF389#ECF389

#ECF389 is a very light, vivid yellow. Relative luminance 0.837; OKLCH L 93.7% C 0.130 H 112.0°. Best body text is #000000 at 17.75:1 contrast (WCAG AA passes).

Color values

HEX	#ECF389
RGB	rgb(236, 243, 137)
HSL	hsl(64, 82%, 75%)
HSV	hsv(64, 44%, 95%)
CMYK	cmyk(2.9%, 0%, 43.6%, 4.7%)
CIE-LAB	lab(93.34, -17.27, 50.12)
CIE-LCH	lch(93.34, 53.01, 109.02°)
OKLab	oklab(93.65% -0.0486 0.1205)
OKLCH	oklch(93.65% 0.13 112)
XYZ	xyz(71.1590, 83.7414, 36.0772)
Luminance	0.8374 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF389 #9089F3

analogous

#F3C589 #ECF389 #B7F389

triadic

#ECF389 #89ECF3 #F389EC

tetradic

#ECF389 #89F3C5 #9089F3 #F389B7

square

#ECF389 #89F3C5 #9089F3 #F389B7

split-complementary

#ECF389 #89B7F3 #C589F3

monochromatic

#DAE81A #E3ED51 #ECF389 #F5F9C1 #FBFCE3

Accessibility & contrast

On white

1.18

#ECF389 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.75

#ECF389 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF389

17.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF389	#FFFFFF	#000000	##000000
##ECF389	1.00	1.18	17.75	17.75
#FFFFFF	1.18	1.00	21.00	21.00
#000000	17.75	21.00	1.00	1.00
##000000	17.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEA80

Deuteranopia (green-blind)

#FFED8E

Tritanopia (blue-blind)

#F8E8DA

Achromatopsia (no color)

#ECECEC

Design tokens & code

CSS

--color: #ecf389;
/* rgb */ color: rgb(236, 243, 137);
/* oklch */ color: oklch(93.7% 0.130 112.0);

Tailwind

colors: {
  custom: {
    50: '#f4f7ad',
    500: '#ecf389',
    950: '#000000',
  },
}

SCSS

$custom: #ecf389;
$custom-light: #f4f7ad;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf389",
  "rgb": {
    "r": 236,
    "g": 243,
    "b": 137
  },
  "hsl": {
    "h": 63.962,
    "s": 81.538,
    "l": 74.51
  },
  "oklch": {
    "l": 0.93654,
    "c": 0.12995,
    "h": 112
  },
  "luminance": 0.8374
}

Semantic roles & 50–950 ramp

primary

#ECF389

secondary

#5951CF

accent

#08DE16

background

#FFFFFD

surface

#FEFEF7

border

#D6D6D0

text

#171710

muted

#858581

Preview Lab

Preview with #ECF389

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

Preview Lab → · Contrast checker → · Palette generator →