#ECF858#ECF858

#ECF858 is a very light, vivid yellow. Relative luminance 0.857; OKLCH L 94.2% C 0.178 H 113.5°. Best body text is #000000 at 18.13:1 contrast (WCAG AA passes).

Color values

HEX	#ECF858
RGB	rgb(236, 248, 88)
HSL	hsl(65, 92%, 66%)
HSV	hsv(65, 65%, 97%)
CMYK	cmyk(4.8%, 0%, 64.5%, 2.7%)
CIE-LAB	lab(94.17, -23.51, 72.44)
CIE-LCH	lch(94.17, 76.17, 107.98°)
OKLab	oklab(94.17% -0.071 0.1636)
OKLCH	oklch(94.17% 0.178 113.5)
XYZ	xyz(69.9228, 85.6736, 22.0839)
Luminance	0.8567 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF858 #6458F8

analogous

#F8B458 #ECF858 #9CF858

triadic

#ECF858 #58ECF8 #F858EC

tetradic

#ECF858 #58F8B4 #6458F8 #F8589C

square

#ECF858 #58F8B4 #6458F8 #F8589C

split-complementary

#ECF858 #589CF8 #B458F8

monochromatic

#BECD09 #E5F61D #ECF858 #F3FA93 #F9FDCD

Accessibility & contrast

On white

1.16

#ECF858 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.13

#ECF858 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF858

18.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF858	#FFFFFF	#000000	##000000
##ECF858	1.00	1.16	18.13	18.13
#FFFFFF	1.16	1.00	21.00	21.00
#000000	18.13	21.00	1.00	1.00
##000000	18.13	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFED42

Deuteranopia (green-blind)

#FFF063

Tritanopia (blue-blind)

#FBEAD7

Achromatopsia (no color)

#EEEEEE

Design tokens & code

CSS

--color: #ecf858;
/* rgb */ color: rgb(236, 248, 88);
/* oklch */ color: oklch(94.2% 0.178 113.5);

Tailwind

colors: {
  custom: {
    50: '#f5fa8f',
    500: '#ecf858',
    950: '#000000',
  },
}

SCSS

$custom: #ecf858;
$custom-light: #f5fa8f;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf858",
  "rgb": {
    "r": 236,
    "g": 248,
    "b": 88
  },
  "hsl": {
    "h": 64.5,
    "s": 91.954,
    "l": 65.882
  },
  "oklch": {
    "l": 0.94167,
    "c": 0.17828,
    "h": 113.5
  },
  "luminance": 0.85672
}

Semantic roles & 50–950 ramp

primary

#ECF858

secondary

#372CC9

accent

#00E611

background

#FFFFFC

surface

#FFFFF4

border

#D7D7CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #ECF858

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

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