#E5EC51#E5EC51

#E5EC51 is a very light, vivid yellow. Relative luminance 0.772; OKLCH L 91.0% C 0.172 H 111.9°. Best body text is #000000 at 16.45:1 contrast (WCAG AA passes).

Color values

HEX	#E5EC51
RGB	rgb(229, 236, 81)
HSL	hsl(63, 80%, 62%)
HSV	hsv(63, 66%, 93%)
CMYK	cmyk(3%, 0%, 65.7%, 7.5%)
CIE-LAB	lab(90.43, -20.99, 71.10)
CIE-LCH	lch(90.43, 74.13, 106.45°)
OKLab	oklab(91.03% -0.0642 0.1598)
OKLCH	oklch(91.03% 0.172 111.9)
XYZ	xyz(63.7957, 77.2445, 19.3321)
Luminance	0.7724 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#E5EC51 #5851EC

analogous

#ECA651 #E5EC51 #97EC51

triadic

#E5EC51 #51E5EC #EC51E5

tetradic

#E5EC51 #51ECA6 #5851EC #EC5197

square

#E5EC51 #51ECA6 #5851EC #EC5197

split-complementary

#E5EC51 #5197EC #A651EC

monochromatic

#A8AF13 #DDE61A #E5EC51 #EDF288 #F5F8BF

Accessibility & contrast

On white

1.28

#E5EC51 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

16.45

#E5EC51 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #E5EC51

16.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##E5EC51	#FFFFFF	#000000	##000000
##E5EC51	1.00	1.28	16.45	16.45
#FFFFFF	1.28	1.00	21.00	21.00
#000000	16.45	21.00	1.00	1.00
##000000	16.45	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FDE23B

Deuteranopia (green-blind)

#FEE65C

Tritanopia (blue-blind)

#F4DECD

Achromatopsia (no color)

#E4E4E4

Design tokens & code

CSS

--color: #e5ec51;
/* rgb */ color: rgb(229, 236, 81);
/* oklch */ color: oklch(91.0% 0.172 111.9);

Tailwind

colors: {
  custom: {
    50: '#f1f18a',
    500: '#e5ec51',
    950: '#000000',
  },
}

SCSS

$custom: #e5ec51;
$custom-light: #f1f18a;
$custom-dark: #000000;

JSON

{
  "hex": "#e5ec51",
  "rgb": {
    "r": 229,
    "g": 236,
    "b": 81
  },
  "hsl": {
    "h": 62.71,
    "s": 80.311,
    "l": 62.157
  },
  "oklch": {
    "l": 0.91031,
    "c": 0.17224,
    "h": 111.9
  },
  "luminance": 0.77243
}

Semantic roles & 50–950 ramp

primary

#E5EC51

secondary

#3731B0

accent

#09DD12

background

#FFFFFC

surface

#FFFEF4

border

#D7D6CE

text

#17160C

muted

#85857F

Preview Lab

Preview with #E5EC51

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

Preview Lab → · Contrast checker → · Palette generator →