#ECF263#ECF263

#ECF263 is a very light, vivid yellow. Relative luminance 0.822; OKLCH L 93.0% C 0.164 H 111.4°. Best body text is #000000 at 17.45:1 contrast (WCAG AA passes).

Color values

HEX	#ECF263
RGB	rgb(236, 242, 99)
HSL	hsl(63, 85%, 67%)
HSV	hsv(63, 59%, 95%)
CMYK	cmyk(2.5%, 0%, 59.1%, 5.1%)
CIE-LAB	lab(92.68, -19.95, 66.46)
CIE-LCH	lch(92.68, 69.39, 106.71°)
OKLab	oklab(93% -0.0598 0.1524)
OKLCH	oklch(93% 0.164 111.4)
XYZ	xyz(68.5982, 82.2395, 24.0622)
Luminance	0.8224 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF263 #6963F2

analogous

#F2B063 #ECF263 #A5F263

triadic

#ECF263 #63ECF2 #F263EC

tetradic

#ECF263 #63F2B0 #6963F2 #F263A5

square

#ECF263 #63F2B0 #6963F2 #F263A5

split-complementary

#ECF263 #63A5F2 #B063F2

monochromatic

#C2CA11 #E5ED2B #ECF263 #F3F79B #FAFBD4

Accessibility & contrast

On white

1.20

#ECF263 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.45

#ECF263 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF263

17.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF263	#FFFFFF	#000000	##000000
##ECF263	1.00	1.20	17.45	17.45
#FFFFFF	1.20	1.00	21.00	21.00
#000000	17.45	21.00	1.00	1.00
##000000	17.45	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE852

Deuteranopia (green-blind)

#FFEC6C

Tritanopia (blue-blind)

#FBE4D4

Achromatopsia (no color)

#EAEAEA

Design tokens & code

CSS

--color: #ecf263;
/* rgb */ color: rgb(236, 242, 99);
/* oklch */ color: oklch(93.0% 0.164 111.4);

Tailwind

colors: {
  custom: {
    50: '#f5f695',
    500: '#ecf263',
    950: '#000000',
  },
}

SCSS

$custom: #ecf263;
$custom-light: #f5f695;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf263",
  "rgb": {
    "r": 236,
    "g": 242,
    "b": 99
  },
  "hsl": {
    "h": 62.517,
    "s": 84.615,
    "l": 66.863
  },
  "oklch": {
    "l": 0.93001,
    "c": 0.16374,
    "h": 111.4
  },
  "luminance": 0.82238
}

Semantic roles & 50–950 ramp

primary

#ECF263

secondary

#3933C6

accent

#04E10E

background

#FFFFFC

surface

#FFFEF5

border

#D7D6CF

text

#17170E

muted

#85857F

Preview Lab

Preview with #ECF263

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

Preview Lab → · Contrast checker → · Palette generator →