#ECF163#ECF163

#ECF163 is a very light, vivid yellow. Relative luminance 0.816; OKLCH L 92.8% C 0.163 H 111.1°. Best body text is #000000 at 17.33:1 contrast (WCAG AA passes).

Color values

HEX	#ECF163
RGB	rgb(236, 241, 99)
HSL	hsl(62, 84%, 67%)
HSV	hsv(62, 59%, 95%)
CMYK	cmyk(2.1%, 0%, 58.9%, 5.5%)
CIE-LAB	lab(92.42, -19.47, 66.18)
CIE-LCH	lch(92.42, 68.98, 106.39°)
OKLab	oklab(92.79% -0.0585 0.1518)
OKLCH	oklch(92.79% 0.163 111.1)
XYZ	xyz(68.3013, 81.6459, 23.9632)
Luminance	0.8164 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF163 #6863F1

analogous

#F1AF63 #ECF163 #A5F163

triadic

#ECF163 #63ECF1 #F163EC

tetradic

#ECF163 #63F1AF #6863F1 #F163A5

square

#ECF163 #63F1AF #6863F1 #F163A5

split-complementary

#ECF163 #63A5F1 #AF63F1

monochromatic

#C1C812 #E5EC2B #ECF163 #F3F69B #FAFBD3

Accessibility & contrast

On white

1.21

#ECF163 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.33

#ECF163 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF163

17.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF163	#FFFFFF	#000000	##000000
##ECF163	1.00	1.21	17.33	17.33
#FFFFFF	1.21	1.00	21.00	21.00
#000000	17.33	21.00	1.00	1.00
##000000	17.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE753

Deuteranopia (green-blind)

#FFEB6C

Tritanopia (blue-blind)

#FBE3D3

Achromatopsia (no color)

#E9E9E9

Design tokens & code

CSS

--color: #ecf163;
/* rgb */ color: rgb(236, 241, 99);
/* oklch */ color: oklch(92.8% 0.163 111.1);

Tailwind

colors: {
  custom: {
    50: '#f5f595',
    500: '#ecf163',
    950: '#000000',
  },
}

SCSS

$custom: #ecf163;
$custom-light: #f5f595;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf163",
  "rgb": {
    "r": 236,
    "g": 241,
    "b": 99
  },
  "hsl": {
    "h": 62.113,
    "s": 83.529,
    "l": 66.667
  },
  "oklch": {
    "l": 0.92792,
    "c": 0.16268,
    "h": 111.1
  },
  "luminance": 0.81644
}

Semantic roles & 50–950 ramp

primary

#ECF163

secondary

#3934C5

accent

#06E00D

background

#FFFFFC

surface

#FFFEF5

border

#D7D6CF

text

#17170E

muted

#85857F

Preview Lab

Preview with #ECF163

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

Preview Lab → · Contrast checker → · Palette generator →