#EFFE6B#EFFE6B

#EFFE6B is a very light, vivid yellow. Relative luminance 0.903; OKLCH L 95.8% C 0.170 H 114.5°. Best body text is #000000 at 19.06:1 contrast (WCAG AA passes).

Color values

HEX	#EFFE6B
RGB	rgb(239, 254, 107)
HSL	hsl(66, 99%, 71%)
HSV	hsv(66, 58%, 100%)
CMYK	cmyk(5.9%, 0%, 57.9%, 0.4%)
CIE-LAB	lab(96.12, -23.94, 66.96)
CIE-LCH	lch(96.12, 71.11, 109.67°)
OKLab	oklab(95.83% -0.0704 0.1544)
OKLCH	oklch(95.83% 0.17 114.5)
XYZ	xyz(73.6938, 90.2971, 27.4540)
Luminance	0.9030 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFFE6B #7A6BFE

analogous

#FEC36B #EFFE6B #A6FE6B

triadic

#EFFE6B #6BEFFE #FE6BEF

tetradic

#EFFE6B #6BFEC3 #7A6BFE #FE6BA6

square

#EFFE6B #6BFEC3 #7A6BFE #FE6BA6

split-complementary

#EFFE6B #6BA6FE #C36BFE

monochromatic

#D5ED02 #E8FE2E #EFFE6B #F6FEA8 #FCFFE1

Accessibility & contrast

On white

1.10

#EFFE6B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.06

#EFFE6B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFFE6B

19.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFFE6B	#FFFFFF	#000000	##000000
##EFFE6B	1.00	1.10	19.06	19.06
#FFFFFF	1.10	1.00	21.00	21.00
#000000	19.06	21.00	1.00	1.00
##000000	19.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF35B

Deuteranopia (green-blind)

#FFF574

Tritanopia (blue-blind)

#FDF1DE

Achromatopsia (no color)

#F4F4F4

Design tokens & code

CSS

--color: #effe6b;
/* rgb */ color: rgb(239, 254, 107);
/* oklch */ color: oklch(95.8% 0.170 114.5);

Tailwind

colors: {
  custom: {
    50: '#f7fe9a',
    500: '#effe6b',
    950: '#000000',
  },
}

SCSS

$custom: #effe6b;
$custom-light: #f7fe9a;
$custom-dark: #000000;

JSON

{
  "hex": "#effe6b",
  "rgb": {
    "r": 239,
    "g": 254,
    "b": 107
  },
  "hsl": {
    "h": 66.122,
    "s": 98.658,
    "l": 70.784
  },
  "oklch": {
    "l": 0.95828,
    "c": 0.16969,
    "h": 114.5
  },
  "luminance": 0.90296
}

Semantic roles & 50–950 ramp

primary

#EFFE6B

secondary

#4433DA

accent

#00E617

background

#FFFFFC

surface

#FFFFF5

border

#D7D7CF

text

#18170E

muted

#86857F

Preview Lab

Preview with #EFFE6B

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

Preview Lab → · Contrast checker → · Palette generator →