#ECF36B#ECF36B

#ECF36B is a very light, vivid yellow. Relative luminance 0.830; OKLCH L 93.3% C 0.158 H 111.8°. Best body text is #000000 at 17.60:1 contrast (WCAG AA passes).

Color values

HEX	#ECF36B
RGB	rgb(236, 243, 107)
HSL	hsl(63, 85%, 69%)
HSV	hsv(63, 56%, 95%)
CMYK	cmyk(2.9%, 0%, 56%, 4.7%)
CIE-LAB	lab(93.01, -19.86, 63.44)
CIE-LCH	lch(93.01, 66.47, 107.39°)
OKLab	oklab(93.29% -0.0588 0.1469)
OKLCH	oklch(93.29% 0.158 111.8)
XYZ	xyz(69.2982, 82.9971, 26.2766)
Luminance	0.8300 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF36B #726BF3

analogous

#F3B66B #ECF36B #A8F36B

triadic

#ECF36B #6BECF3 #F36BEC

tetradic

#ECF36B #6BF3B6 #726BF3 #F36BA8

square

#ECF36B #6BF3B6 #726BF3 #F36BA8

split-complementary

#ECF36B #6BA8F3 #B66BF3

monochromatic

#C9D311 #E5EE32 #ECF36B #F3F8A4 #FBFCDC

Accessibility & contrast

On white

1.19

#ECF36B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.60

#ECF36B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF36B

17.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF36B	#FFFFFF	#000000	##000000
##ECF36B	1.00	1.19	17.60	17.60
#FFFFFF	1.19	1.00	21.00	21.00
#000000	17.60	21.00	1.00	1.00
##000000	17.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE95D

Deuteranopia (green-blind)

#FFED73

Tritanopia (blue-blind)

#FAE6D5

Achromatopsia (no color)

#EBEBEB

Design tokens & code

CSS

--color: #ecf36b;
/* rgb */ color: rgb(236, 243, 107);
/* oklch */ color: oklch(93.3% 0.158 111.8);

Tailwind

colors: {
  custom: {
    50: '#f5f69a',
    500: '#ecf36b',
    950: '#000000',
  },
}

SCSS

$custom: #ecf36b;
$custom-light: #f5f69a;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf36b",
  "rgb": {
    "r": 236,
    "g": 243,
    "b": 107
  },
  "hsl": {
    "h": 63.088,
    "s": 85,
    "l": 68.627
  },
  "oklch": {
    "l": 0.93289,
    "c": 0.15825,
    "h": 111.8
  },
  "luminance": 0.82996
}

Semantic roles & 50–950 ramp

primary

#ECF36B

secondary

#3E36CC

accent

#04E10F

background

#FFFFFC

surface

#FFFEF5

border

#D7D6CF

text

#17170E

muted

#85857F

Preview Lab

Preview with #ECF36B

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

Preview Lab → · Contrast checker → · Palette generator →