#ECF98B#ECF98B

#ECF98B is a very light, vivid yellow. Relative luminance 0.874; OKLCH L 94.9% C 0.135 H 114.5°. Best body text is #000000 at 18.49:1 contrast (WCAG AA passes).

Color values

HEX	#ECF98B
RGB	rgb(236, 249, 139)
HSL	hsl(67, 90%, 76%)
HSV	hsv(67, 44%, 98%)
CMYK	cmyk(5.2%, 0%, 44.2%, 2.4%)
CIE-LAB	lab(94.93, -19.98, 51.13)
CIE-LCH	lch(94.93, 54.89, 111.34°)
OKLab	oklab(94.93% -0.0561 0.1229)
OKLCH	oklch(94.93% 0.135 114.5)
XYZ	xyz(73.1288, 87.4493, 37.4481)
Luminance	0.8745 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF98B #988BF9

analogous

#F9CF8B #ECF98B #B5F98B

triadic

#ECF98B #8BECF9 #F98BEC

tetradic

#ECF98B #8BF9CF #988BF9 #F98BB5

square

#ECF98B #8BF9CF #988BF9 #F98BB5

split-complementary

#ECF98B #8BB5F9 #CF8BF9

monochromatic

#D9F317 #E2F651 #ECF98B #F6FCC5 #FAFDE2

Accessibility & contrast

On white

1.14

#ECF98B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.49

#ECF98B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF98B

18.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF98B	#FFFFFF	#000000	##000000
##ECF98B	1.00	1.14	18.49	18.49
#FFFFFF	1.14	1.00	21.00	21.00
#000000	18.49	21.00	1.00	1.00
##000000	18.49	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEF82

Deuteranopia (green-blind)

#FFF290

Tritanopia (blue-blind)

#F7EEDF

Achromatopsia (no color)

#F0F0F0

Design tokens & code

CSS

--color: #ecf98b;
/* rgb */ color: rgb(236, 249, 139);
/* oklch */ color: oklch(94.9% 0.135 114.5);

Tailwind

colors: {
  custom: {
    50: '#f4fbaf',
    500: '#ecf98b',
    950: '#000000',
  },
}

SCSS

$custom: #ecf98b;
$custom-light: #f4fbaf;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf98b",
  "rgb": {
    "r": 236,
    "g": 249,
    "b": 139
  },
  "hsl": {
    "h": 67.091,
    "s": 90.164,
    "l": 76.078
  },
  "oklch": {
    "l": 0.94931,
    "c": 0.13512,
    "h": 114.5
  },
  "luminance": 0.87448
}

Semantic roles & 50–950 ramp

primary

#ECF98B

secondary

#6151D8

accent

#00E61B

background

#FFFFFD

surface

#FEFFF7

border

#D6D7D0

text

#171710

muted

#858581

Preview Lab

Preview with #ECF98B

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

Preview Lab → · Contrast checker → · Palette generator →