#ECFA5B#ECFA5B

#ECFA5B is a very light, vivid yellow. Relative luminance 0.870; OKLCH L 94.6% C 0.178 H 114.1°. Best body text is #000000 at 18.39:1 contrast (WCAG AA passes).

Color values

HEX	#ECFA5B
RGB	rgb(236, 250, 91)
HSL	hsl(65, 94%, 67%)
HSV	hsv(65, 64%, 98%)
CMYK	cmyk(5.6%, 0%, 63.6%, 2%)
CIE-LAB	lab(94.72, -24.28, 71.86)
CIE-LCH	lch(94.72, 75.85, 108.67°)
OKLab	oklab(94.61% -0.0728 0.1628)
OKLCH	oklch(94.61% 0.178 114.1)
XYZ	xyz(70.6678, 86.9607, 22.9579)
Luminance	0.8696 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECFA5B #695BFA

analogous

#FAB95B #ECFA5B #9DFA5B

triadic

#ECFA5B #5BECFA #FA5BEC

tetradic

#ECFA5B #5BFAB9 #695BFA #FA5B9D

square

#ECFA5B #5BFAB9 #695BFA #FA5B9D

split-complementary

#ECFA5B #5B9DFA #B95BFA

monochromatic

#C2D406 #E5F820 #ECFA5B #F3FC96 #FAFED2

Accessibility & contrast

On white

1.14

#ECFA5B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.39

#ECFA5B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECFA5B

18.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECFA5B	#FFFFFF	#000000	##000000
##ECFA5B	1.00	1.14	18.39	18.39
#FFFFFF	1.14	1.00	21.00	21.00
#000000	18.39	21.00	1.00	1.00
##000000	18.39	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEE46

Deuteranopia (green-blind)

#FFF166

Tritanopia (blue-blind)

#FBECD9

Achromatopsia (no color)

#F0F0F0

Design tokens & code

CSS

--color: #ecfa5b;
/* rgb */ color: rgb(236, 250, 91);
/* oklch */ color: oklch(94.6% 0.178 114.1);

Tailwind

colors: {
  custom: {
    50: '#f5fb91',
    500: '#ecfa5b',
    950: '#000000',
  },
}

SCSS

$custom: #ecfa5b;
$custom-light: #f5fb91;
$custom-dark: #000000;

JSON

{
  "hex": "#ecfa5b",
  "rgb": {
    "r": 236,
    "g": 250,
    "b": 91
  },
  "hsl": {
    "h": 65.283,
    "s": 94.083,
    "l": 66.863
  },
  "oklch": {
    "l": 0.94614,
    "c": 0.1783,
    "h": 114.1
  },
  "luminance": 0.86959
}

Semantic roles & 50–950 ramp

primary

#ECFA5B

secondary

#392BCF

accent

#00E614

background

#FFFFFC

surface

#FFFFF4

border

#D7D7CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #ECFA5B

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

Preview Lab → · Contrast checker → · Palette generator →