#ECF05D#ECF05D

#ECF05D is a very light, vivid yellow. Relative luminance 0.809; OKLCH L 92.5% C 0.166 H 110.7°. Best body text is #000000 at 17.19:1 contrast (WCAG AA passes).

Color values

HEX	#ECF05D
RGB	rgb(236, 240, 93)
HSL	hsl(62, 83%, 65%)
HSV	hsv(62, 61%, 94%)
CMYK	cmyk(1.7%, 0%, 61.2%, 5.9%)
CIE-LAB	lab(92.11, -19.38, 68.31)
CIE-LCH	lch(92.11, 71.00, 105.84°)
OKLab	oklab(92.53% -0.0588 0.1555)
OKLCH	oklch(92.53% 0.166 110.7)
XYZ	xyz(67.7299, 80.9450, 22.4099)
Luminance	0.8094 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF05D #615DF0

analogous

#F0AB5D #ECF05D #A2F05D

triadic

#ECF05D #5DECF0 #F05DEC

tetradic

#ECF05D #5DF0AB #615DF0 #F05DA2

square

#ECF05D #5DF0AB #615DF0 #F05DA2

split-complementary

#ECF05D #5DA2F0 #AB5DF0

monochromatic

#BCC112 #E5EB25 #ECF05D #F3F595 #F9FACD

Accessibility & contrast

On white

1.22

#ECF05D on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.19

#ECF05D on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF05D

17.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF05D	#FFFFFF	#000000	##000000
##ECF05D	1.00	1.22	17.19	17.19
#FFFFFF	1.22	1.00	21.00	21.00
#000000	17.19	21.00	1.00	1.00
##000000	17.19	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE64B

Deuteranopia (green-blind)

#FFEA66

Tritanopia (blue-blind)

#FBE2D1

Achromatopsia (no color)

#E8E8E8

Design tokens & code

CSS

--color: #ecf05d;
/* rgb */ color: rgb(236, 240, 93);
/* oklch */ color: oklch(92.5% 0.166 110.7);

Tailwind

colors: {
  custom: {
    50: '#f5f491',
    500: '#ecf05d',
    950: '#000000',
  },
}

SCSS

$custom: #ecf05d;
$custom-light: #f5f491;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf05d",
  "rgb": {
    "r": 236,
    "g": 240,
    "b": 93
  },
  "hsl": {
    "h": 61.633,
    "s": 83.051,
    "l": 65.294
  },
  "oklch": {
    "l": 0.92527,
    "c": 0.16628,
    "h": 110.7
  },
  "luminance": 0.80943
}

Semantic roles & 50–950 ramp

primary

#ECF05D

secondary

#3632BF

accent

#06DF0C

background

#FFFFFC

surface

#FFFEF4

border

#D7D6CE

text

#17170D

muted

#85857F

Preview Lab

Preview with #ECF05D

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

Preview Lab → · Contrast checker → · Palette generator →