#ECF38F#ECF38F

#ECF38F is a very light, vivid yellow. Relative luminance 0.839; OKLCH L 93.7% C 0.124 H 112.0°. Best body text is #000000 at 17.78:1 contrast (WCAG AA passes).

Color values

HEX	#ECF38F
RGB	rgb(236, 243, 143)
HSL	hsl(64, 81%, 76%)
HSV	hsv(64, 41%, 95%)
CMYK	cmyk(2.9%, 0%, 41.2%, 4.7%)
CIE-LAB	lab(93.42, -16.67, 47.33)
CIE-LCH	lch(93.42, 50.18, 109.40°)
OKLab	oklab(93.74% -0.0464 0.1146)
OKLCH	oklch(93.74% 0.124 112)
XYZ	xyz(71.6015, 83.9184, 38.4072)
Luminance	0.8392 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF38F #968FF3

analogous

#F3C88F #ECF38F #BAF38F

triadic

#ECF38F #8FECF3 #F38FEC

tetradic

#ECF38F #8FF3C8 #968FF3 #F38FBA

square

#ECF38F #8FF3C8 #968FF3 #F38FBA

split-complementary

#ECF38F #8FBAF3 #C88FF3

monochromatic

#D9E720 #E3ED58 #ECF38F #F5F9C6 #FAFCE3

Accessibility & contrast

On white

1.18

#ECF38F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.78

#ECF38F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF38F

17.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF38F	#FFFFFF	#000000	##000000
##ECF38F	1.00	1.18	17.78	17.78
#FFFFFF	1.18	1.00	21.00	21.00
#000000	17.78	21.00	1.00	1.00
##000000	17.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEB87

Deuteranopia (green-blind)

#FFED94

Tritanopia (blue-blind)

#F8E8DB

Achromatopsia (no color)

#ECECEC

Design tokens & code

CSS

--color: #ecf38f;
/* rgb */ color: rgb(236, 243, 143);
/* oklch */ color: oklch(93.7% 0.124 112.0);

Tailwind

colors: {
  custom: {
    50: '#f3f7b1',
    500: '#ecf38f',
    950: '#000000',
  },
}

SCSS

$custom: #ecf38f;
$custom-light: #f3f7b1;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf38f",
  "rgb": {
    "r": 236,
    "g": 243,
    "b": 143
  },
  "hsl": {
    "h": 64.2,
    "s": 80.645,
    "l": 75.686
  },
  "oklch": {
    "l": 0.9374,
    "c": 0.12366,
    "h": 112
  },
  "luminance": 0.83917
}

Semantic roles & 50–950 ramp

primary

#ECF38F

secondary

#5F56D0

accent

#09DD17

background

#FFFFFD

surface

#FEFEF8

border

#D6D6D1

text

#171711

muted

#858581

Preview Lab

Preview with #ECF38F

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

Preview Lab → · Contrast checker → · Palette generator →