#ECF15B#ECF15B

#ECF15B is a very light, vivid yellow. Relative luminance 0.815; OKLCH L 92.7% C 0.169 H 111.1°. Best body text is #000000 at 17.30:1 contrast (WCAG AA passes).

Color values

HEX	#ECF15B
RGB	rgb(236, 241, 91)
HSL	hsl(62, 84%, 65%)
HSV	hsv(62, 62%, 95%)
CMYK	cmyk(2.1%, 0%, 62.2%, 5.5%)
CIE-LAB	lab(92.35, -19.99, 69.37)
CIE-LCH	lch(92.35, 72.19, 106.07°)
OKLab	oklab(92.72% -0.0608 0.1575)
OKLCH	oklch(92.72% 0.169 111.1)
XYZ	xyz(67.9377, 81.5004, 22.0479)
Luminance	0.8150 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF15B #605BF1

analogous

#F1AB5B #ECF15B #A1F15B

triadic

#ECF15B #5BECF1 #F15BEC

tetradic

#ECF15B #5BF1AB #605BF1 #F15BA1

square

#ECF15B #5BF1AB #605BF1 #F15BA1

split-complementary

#ECF15B #5BA1F1 #AB5BF1

monochromatic

#BBC110 #E5EC23 #ECF15B #F3F693 #F9FBCC

Accessibility & contrast

On white

1.21

#ECF15B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.30

#ECF15B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF15B

17.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF15B	#FFFFFF	#000000	##000000
##ECF15B	1.00	1.21	17.30	17.30
#FFFFFF	1.21	1.00	21.00	21.00
#000000	17.30	21.00	1.00	1.00
##000000	17.30	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE748

Deuteranopia (green-blind)

#FFEB65

Tritanopia (blue-blind)

#FBE3D2

Achromatopsia (no color)

#E9E9E9

Design tokens & code

CSS

--color: #ecf15b;
/* rgb */ color: rgb(236, 241, 91);
/* oklch */ color: oklch(92.7% 0.169 111.1);

Tailwind

colors: {
  custom: {
    50: '#f5f590',
    500: '#ecf15b',
    950: '#000000',
  },
}

SCSS

$custom: #ecf15b;
$custom-light: #f5f590;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf15b",
  "rgb": {
    "r": 236,
    "g": 241,
    "b": 91
  },
  "hsl": {
    "h": 62,
    "s": 84.27,
    "l": 65.098
  },
  "oklch": {
    "l": 0.92719,
    "c": 0.16881,
    "h": 111.1
  },
  "luminance": 0.81499
}

Semantic roles & 50–950 ramp

primary

#ECF15B

secondary

#3631BF

accent

#05E10C

background

#FFFFFC

surface

#FFFEF4

border

#D7D6CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #ECF15B

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

Preview Lab → · Contrast checker → · Palette generator →