#ECF97B#ECF97B

#ECF97B is a very light, vivid yellow. Relative luminance 0.870; OKLCH L 94.7% C 0.151 H 114.2°. Best body text is #000000 at 18.40:1 contrast (WCAG AA passes).

Color values

HEX	#ECF97B
RGB	rgb(236, 249, 123)
HSL	hsl(66, 91%, 73%)
HSV	hsv(66, 51%, 98%)
CMYK	cmyk(5.2%, 0%, 50.6%, 2.4%)
CIE-LAB	lab(94.74, -21.46, 58.33)
CIE-LCH	lch(94.74, 62.16, 110.20°)
OKLab	oklab(94.72% -0.0617 0.1375)
OKLCH	oklch(94.72% 0.151 114.2)
XYZ	xyz(72.0441, 87.0154, 31.7355)
Luminance	0.8701 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF97B #887BF9

analogous

#F9C77B #ECF97B #ADF97B

triadic

#ECF97B #7BECF9 #F97BEC

tetradic

#ECF97B #7BF9C7 #887BF9 #F97BAD

square

#ECF97B #7BF9C7 #887BF9 #F97BAD

split-complementary

#ECF97B #7BADF9 #C77BF9

monochromatic

#D7EF0B #E4F640 #ECF97B #F4FCB6 #FBFEE2

Accessibility & contrast

On white

1.14

#ECF97B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.40

#ECF97B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF97B

18.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF97B	#FFFFFF	#000000	##000000
##ECF97B	1.00	1.14	18.40	18.40
#FFFFFF	1.14	1.00	21.00	21.00
#000000	18.40	21.00	1.00	1.00
##000000	18.40	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEF6F

Deuteranopia (green-blind)

#FFF182

Tritanopia (blue-blind)

#F9EDDC

Achromatopsia (no color)

#F0F0F0

Design tokens & code

CSS

--color: #ecf97b;
/* rgb */ color: rgb(236, 249, 123);
/* oklch */ color: oklch(94.7% 0.151 114.2);

Tailwind

colors: {
  custom: {
    50: '#f4fba4',
    500: '#ecf97b',
    950: '#000000',
  },
}

SCSS

$custom: #ecf97b;
$custom-light: #f4fba4;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf97b",
  "rgb": {
    "r": 236,
    "g": 249,
    "b": 123
  },
  "hsl": {
    "h": 66.19,
    "s": 91.304,
    "l": 72.941
  },
  "oklch": {
    "l": 0.94724,
    "c": 0.15077,
    "h": 114.2
  },
  "luminance": 0.87014
}

Semantic roles & 50–950 ramp

primary

#ECF97B

secondary

#5243D6

accent

#00E618

background

#FFFFFC

surface

#FFFFF6

border

#D7D7D0

text

#17170F

muted

#858580

Preview Lab

Preview with #ECF97B

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

Preview Lab → · Contrast checker → · Palette generator →