#ECF658#ECF658

#ECF658 is a very light, vivid yellow. Relative luminance 0.844; OKLCH L 93.7% C 0.176 H 112.8°. Best body text is #000000 at 17.89:1 contrast (WCAG AA passes).

Color values

HEX	#ECF658
RGB	rgb(236, 246, 88)
HSL	hsl(64, 90%, 65%)
HSV	hsv(64, 64%, 96%)
CMYK	cmyk(4.1%, 0%, 64.2%, 3.5%)
CIE-LAB	lab(93.65, -22.56, 71.90)
CIE-LCH	lch(93.65, 75.36, 107.42°)
OKLab	oklab(93.75% -0.0683 0.1624)
OKLCH	oklch(93.75% 0.176 112.8)
XYZ	xyz(69.3112, 84.4504, 21.8800)
Luminance	0.8445 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF658 #6258F6

analogous

#F6B158 #ECF658 #9DF658

triadic

#ECF658 #58ECF6 #F658EC

tetradic

#ECF658 #58F6B1 #6258F6 #F6589D

square

#ECF658 #58F6B1 #6258F6 #F6589D

split-complementary

#ECF658 #589DF6 #B158F6

monochromatic

#BDC90B #E5F31E #ECF658 #F3F992 #F9FCCC

Accessibility & contrast

On white

1.17

#ECF658 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.89

#ECF658 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF658

17.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF658	#FFFFFF	#000000	##000000
##ECF658	1.00	1.17	17.89	17.89
#FFFFFF	1.17	1.00	21.00	21.00
#000000	17.89	21.00	1.00	1.00
##000000	17.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEB42

Deuteranopia (green-blind)

#FFEF63

Tritanopia (blue-blind)

#FBE8D6

Achromatopsia (no color)

#EDEDED

Design tokens & code

CSS

--color: #ecf658;
/* rgb */ color: rgb(236, 246, 88);
/* oklch */ color: oklch(93.7% 0.176 112.8);

Tailwind

colors: {
  custom: {
    50: '#f5f98f',
    500: '#ecf658',
    950: '#000000',
  },
}

SCSS

$custom: #ecf658;
$custom-light: #f5f98f;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf658",
  "rgb": {
    "r": 236,
    "g": 246,
    "b": 88
  },
  "hsl": {
    "h": 63.797,
    "s": 89.773,
    "l": 65.49
  },
  "oklch": {
    "l": 0.93745,
    "c": 0.17617,
    "h": 112.8
  },
  "luminance": 0.84449
}

Semantic roles & 50–950 ramp

primary

#ECF658

secondary

#372DC5

accent

#00E60F

background

#FFFFFC

surface

#FFFFF4

border

#D7D7CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #ECF658

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

Preview Lab → · Contrast checker → · Palette generator →