#EFE451#EFE451

#EFE451 is a very light, vivid yellow. Relative luminance 0.744; OKLCH L 90.2% C 0.163 H 105.0°. Best body text is #000000 at 15.89:1 contrast (WCAG AA passes).

Color values

HEX	#EFE451
RGB	rgb(239, 228, 81)
HSL	hsl(56, 83%, 63%)
HSV	hsv(56, 66%, 94%)
CMYK	cmyk(0%, 4.6%, 66.1%, 6.3%)
CIE-LAB	lab(89.13, -13.01, 70.01)
CIE-LCH	lch(89.13, 71.21, 100.53°)
OKLab	oklab(90.18% -0.0422 0.1573)
OKLCH	oklch(90.18% 0.163 105)
XYZ	xyz(64.8277, 74.4340, 18.7354)
Luminance	0.7443 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFE451 #515CEF

analogous

#EF9551 #EFE451 #ABEF51

triadic

#EFE451 #51EFE4 #E451EF

tetradic

#EFE451 #51EF95 #515CEF #EF51AB

square

#EFE451 #51EF95 #515CEF #EF51AB

split-complementary

#EFE451 #51ABEF #9551EF

monochromatic

#B5AA11 #EADB19 #EFE451 #F4ED89 #F9F5C1

Accessibility & contrast

On white

1.32

#EFE451 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

15.89

#EFE451 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFE451

15.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFE451	#FFFFFF	#000000	##000000
##EFE451	1.00	1.32	15.89	15.89
#FFFFFF	1.32	1.00	21.00	21.00
#000000	15.89	21.00	1.00	1.00
##000000	15.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#F7DC3C

Deuteranopia (green-blind)

#FBE35A

Tritanopia (blue-blind)

#FFD5C6

Achromatopsia (no color)

#E0E0E0

Design tokens & code

CSS

--color: #efe451;
/* rgb */ color: rgb(239, 228, 81);
/* oklch */ color: oklch(90.2% 0.163 105.0);

Tailwind

colors: {
  custom: {
    50: '#f8ec89',
    500: '#efe451',
    950: '#000000',
  },
}

SCSS

$custom: #efe451;
$custom-light: #f8ec89;
$custom-dark: #000000;

JSON

{
  "hex": "#efe451",
  "rgb": {
    "r": 239,
    "g": 228,
    "b": 81
  },
  "hsl": {
    "h": 55.823,
    "s": 83.158,
    "l": 62.745
  },
  "oklch": {
    "l": 0.9018,
    "c": 0.16286,
    "h": 105
  },
  "luminance": 0.74432
}

Semantic roles & 50–950 ramp

primary

#EFE451

secondary

#3039B5

accent

#15E006

background

#FFFEFC

surface

#FFFDF4

border

#D7D5CE

text

#18160C

muted

#86847F

Preview Lab

Preview with #EFE451

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

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