#ECF459#ECF459

#ECF459 is a very light, vivid yellow. Relative luminance 0.833; OKLCH L 93.3% C 0.173 H 112.1°. Best body text is #000000 at 17.65:1 contrast (WCAG AA passes).

Color values

HEX	#ECF459
RGB	rgb(236, 244, 89)
HSL	hsl(63, 88%, 65%)
HSV	hsv(63, 64%, 96%)
CMYK	cmyk(3.3%, 0%, 63.5%, 4.3%)
CIE-LAB	lab(93.13, -21.55, 70.97)
CIE-LCH	lch(93.13, 74.17, 106.89°)
OKLab	oklab(93.33% -0.0653 0.1606)
OKLCH	oklch(93.33% 0.173 112.1)
XYZ	xyz(68.7479, 83.2570, 21.8980)
Luminance	0.8326 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF459 #6159F4

analogous

#F4AF59 #ECF459 #9EF459

triadic

#ECF459 #59ECF4 #F459EC

tetradic

#ECF459 #59F4AF #6159F4 #F4599E

square

#ECF459 #59F4AF #6159F4 #F4599E

split-complementary

#ECF459 #599EF4 #AF59F4

monochromatic

#BCC60D #E5F020 #ECF459 #F3F892 #F9FCCC

Accessibility & contrast

On white

1.19

#ECF459 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.65

#ECF459 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF459

17.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF459	#FFFFFF	#000000	##000000
##ECF459	1.00	1.19	17.65	17.65
#FFFFFF	1.19	1.00	21.00	21.00
#000000	17.65	21.00	1.00	1.00
##000000	17.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE944

Deuteranopia (green-blind)

#FFED63

Tritanopia (blue-blind)

#FBE6D4

Achromatopsia (no color)

#EBEBEB

Design tokens & code

CSS

--color: #ecf459;
/* rgb */ color: rgb(236, 244, 89);
/* oklch */ color: oklch(93.3% 0.173 112.1);

Tailwind

colors: {
  custom: {
    50: '#f5f78f',
    500: '#ecf459',
    950: '#000000',
  },
}

SCSS

$custom: #ecf459;
$custom-light: #f5f78f;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf459",
  "rgb": {
    "r": 236,
    "g": 244,
    "b": 89
  },
  "hsl": {
    "h": 63.097,
    "s": 87.571,
    "l": 65.294
  },
  "oklch": {
    "l": 0.93332,
    "c": 0.17338,
    "h": 112.1
  },
  "luminance": 0.83256
}

Semantic roles & 50–950 ramp

primary

#ECF459

secondary

#362FC3

accent

#01E40D

background

#FFFFFC

surface

#FFFEF4

border

#D7D6CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #ECF459

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

Preview Lab → · Contrast checker → · Palette generator →