#ECF457#ECF457

#ECF457 is a very light, vivid yellow. Relative luminance 0.832; OKLCH L 93.3% C 0.175 H 112.1°. Best body text is #000000 at 17.64:1 contrast (WCAG AA passes).

Color values

HEX	#ECF457
RGB	rgb(236, 244, 87)
HSL	hsl(63, 88%, 65%)
HSV	hsv(63, 64%, 96%)
CMYK	cmyk(3.3%, 0%, 64.3%, 4.3%)
CIE-LAB	lab(93.11, -21.67, 71.73)
CIE-LCH	lch(93.11, 74.93, 106.81°)
OKLab	oklab(93.32% -0.0659 0.1619)
OKLCH	oklch(93.32% 0.175 112.1)
XYZ	xyz(68.6650, 83.2239, 21.4617)
Luminance	0.8322 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF457 #5F57F4

analogous

#F4AD57 #ECF457 #9EF457

triadic

#ECF457 #57ECF4 #F457EC

tetradic

#ECF457 #57F4AD #5F57F4 #F4579E

square

#ECF457 #57F4AD #5F57F4 #F4579E

split-complementary

#ECF457 #579EF4 #AD57F4

monochromatic

#BAC40D #E6F01E #ECF457 #F2F890 #F9FCCA

Accessibility & contrast

On white

1.19

#ECF457 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.64

#ECF457 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF457

17.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF457	#FFFFFF	#000000	##000000
##ECF457	1.00	1.19	17.64	17.64
#FFFFFF	1.19	1.00	21.00	21.00
#000000	17.64	21.00	1.00	1.00
##000000	17.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE941

Deuteranopia (green-blind)

#FFED62

Tritanopia (blue-blind)

#FBE6D4

Achromatopsia (no color)

#EBEBEB

Design tokens & code

CSS

--color: #ecf457;
/* rgb */ color: rgb(236, 244, 87);
/* oklch */ color: oklch(93.3% 0.175 112.1);

Tailwind

colors: {
  custom: {
    50: '#f5f78e',
    500: '#ecf457',
    950: '#000000',
  },
}

SCSS

$custom: #ecf457;
$custom-light: #f5f78e;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf457",
  "rgb": {
    "r": 236,
    "g": 244,
    "b": 87
  },
  "hsl": {
    "h": 63.057,
    "s": 87.709,
    "l": 64.902
  },
  "oklch": {
    "l": 0.93316,
    "c": 0.17479,
    "h": 112.1
  },
  "luminance": 0.83222
}

Semantic roles & 50–950 ramp

primary

#ECF457

secondary

#362EC1

accent

#01E40D

background

#FFFFFC

surface

#FFFEF4

border

#D7D6CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #ECF457

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

Preview Lab → · Contrast checker → · Palette generator →