#ECF05F#ECF05F

#ECF05F is a very light, vivid yellow. Relative luminance 0.810; OKLCH L 92.5% C 0.165 H 110.7°. Best body text is #000000 at 17.20:1 contrast (WCAG AA passes).

Color values

HEX	#ECF05F
RGB	rgb(236, 240, 95)
HSL	hsl(62, 83%, 66%)
HSV	hsv(62, 60%, 94%)
CMYK	cmyk(1.7%, 0%, 60.4%, 5.9%)
CIE-LAB	lab(92.12, -19.25, 67.51)
CIE-LCH	lch(92.12, 70.20, 105.92°)
OKLab	oklab(92.55% -0.0583 0.1541)
OKLCH	oklch(92.55% 0.165 110.7)
XYZ	xyz(67.8197, 80.9809, 22.8826)
Luminance	0.8098 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF05F #635FF0

analogous

#F0AB5F #ECF05F #A3F05F

triadic

#ECF05F #5FECF0 #F05FEC

tetradic

#ECF05F #5FF0AB #635FF0 #F05FA3

square

#ECF05F #5FF0AB #635FF0 #F05FA3

split-complementary

#ECF05F #5FA3F0 #AB5FF0

monochromatic

#BEC212 #E5EB27 #ECF05F #F3F597 #F9FACF

Accessibility & contrast

On white

1.22

#ECF05F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.20

#ECF05F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF05F

17.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF05F	#FFFFFF	#000000	##000000
##ECF05F	1.00	1.22	17.20	17.20
#FFFFFF	1.22	1.00	21.00	21.00
#000000	17.20	21.00	1.00	1.00
##000000	17.20	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE64E

Deuteranopia (green-blind)

#FFEA68

Tritanopia (blue-blind)

#FBE2D2

Achromatopsia (no color)

#E8E8E8

Design tokens & code

CSS

--color: #ecf05f;
/* rgb */ color: rgb(236, 240, 95);
/* oklch */ color: oklch(92.5% 0.165 110.7);

Tailwind

colors: {
  custom: {
    50: '#f5f492',
    500: '#ecf05f',
    950: '#000000',
  },
}

SCSS

$custom: #ecf05f;
$custom-light: #f5f492;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf05f",
  "rgb": {
    "r": 236,
    "g": 240,
    "b": 95
  },
  "hsl": {
    "h": 61.655,
    "s": 82.857,
    "l": 65.686
  },
  "oklch": {
    "l": 0.92545,
    "c": 0.16476,
    "h": 110.7
  },
  "luminance": 0.80979
}

Semantic roles & 50–950 ramp

primary

#ECF05F

secondary

#3733C0

accent

#06DF0C

background

#FFFFFC

surface

#FFFEF4

border

#D7D6CE

text

#17170D

muted

#85857F

Preview Lab

Preview with #ECF05F

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

Preview Lab → · Contrast checker → · Palette generator →