#ECF371#ECF371

#ECF371 is a very light, vivid yellow. Relative luminance 0.831; OKLCH L 93.4% C 0.153 H 111.8°. Best body text is #000000 at 17.63:1 contrast (WCAG AA passes).

Color values

HEX	#ECF371
RGB	rgb(236, 243, 113)
HSL	hsl(63, 84%, 70%)
HSV	hsv(63, 53%, 95%)
CMYK	cmyk(2.9%, 0%, 53.5%, 4.7%)
CIE-LAB	lab(93.07, -19.41, 60.87)
CIE-LCH	lch(93.07, 63.89, 107.68°)
OKLab	oklab(93.35% -0.0569 0.1421)
OKLCH	oklch(93.35% 0.153 111.8)
XYZ	xyz(69.6249, 83.1277, 27.9971)
Luminance	0.8313 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF371 #7871F3

analogous

#F3B971 #ECF371 #ABF371

triadic

#ECF371 #71ECF3 #F371EC

tetradic

#ECF371 #71F3B9 #7871F3 #F371AB

square

#ECF371 #71F3B9 #7871F3 #F371AB

split-complementary

#ECF371 #71ABF3 #B971F3

monochromatic

#CDD712 #E4EE39 #ECF371 #F4F8A9 #FBFDE2

Accessibility & contrast

On white

1.19

#ECF371 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.63

#ECF371 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF371

17.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF371	#FFFFFF	#000000	##000000
##ECF371	1.00	1.19	17.63	17.63
#FFFFFF	1.19	1.00	21.00	21.00
#000000	17.63	21.00	1.00	1.00
##000000	17.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE964

Deuteranopia (green-blind)

#FFED78

Tritanopia (blue-blind)

#FAE6D6

Achromatopsia (no color)

#EBEBEB

Design tokens & code

CSS

--color: #ecf371;
/* rgb */ color: rgb(236, 243, 113);
/* oklch */ color: oklch(93.4% 0.153 111.8);

Tailwind

colors: {
  custom: {
    50: '#f4f69d',
    500: '#ecf371',
    950: '#000000',
  },
}

SCSS

$custom: #ecf371;
$custom-light: #f4f69d;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf371",
  "rgb": {
    "r": 236,
    "g": 243,
    "b": 113
  },
  "hsl": {
    "h": 63.231,
    "s": 84.416,
    "l": 69.804
  },
  "oklch": {
    "l": 0.93353,
    "c": 0.15305,
    "h": 111.8
  },
  "luminance": 0.83126
}

Semantic roles & 50–950 ramp

primary

#ECF371

secondary

#433BCD

accent

#05E110

background

#FFFFFC

surface

#FFFEF5

border

#D7D6CF

text

#17170F

muted

#858580

Preview Lab

Preview with #ECF371

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

Preview Lab → · Contrast checker → · Palette generator →