#EFFE61#EFFE61

#EFFE61 is a very light, vivid yellow. Relative luminance 0.901; OKLCH L 95.7% C 0.177 H 114.4°. Best body text is #000000 at 19.02:1 contrast (WCAG AA passes).

Color values

HEX	#EFFE61
RGB	rgb(239, 254, 97)
HSL	hsl(66, 99%, 69%)
HSV	hsv(66, 62%, 100%)
CMYK	cmyk(5.9%, 0%, 61.8%, 0.4%)
CIE-LAB	lab(96.04, -24.61, 70.96)
CIE-LCH	lch(96.04, 75.11, 109.13°)
OKLab	oklab(95.74% -0.0733 0.1616)
OKLCH	oklch(95.74% 0.177 114.4)
XYZ	xyz(73.1978, 90.0987, 24.8417)
Luminance	0.9010 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFFE61 #7061FE

analogous

#FEBE61 #EFFE61 #A1FE61

triadic

#EFFE61 #61EFFE #FE61EF

tetradic

#EFFE61 #61FEBE #7061FE #FE61A1

square

#EFFE61 #61FEBE #7061FE #FE61A1

split-complementary

#EFFE61 #61A1FE #BE61FE

monochromatic

#CEE301 #E9FE24 #EFFE61 #F5FE9E #FBFFDB

Accessibility & contrast

On white

1.10

#EFFE61 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.02

#EFFE61 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFFE61

19.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFFE61	#FFFFFF	#000000	##000000
##EFFE61	1.00	1.10	19.02	19.02
#FFFFFF	1.10	1.00	21.00	21.00
#000000	19.02	21.00	1.00	1.00
##000000	19.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF24D

Deuteranopia (green-blind)

#FFF56B

Tritanopia (blue-blind)

#FDF0DD

Achromatopsia (no color)

#F4F4F4

Design tokens & code

CSS

--color: #effe61;
/* rgb */ color: rgb(239, 254, 97);
/* oklch */ color: oklch(95.7% 0.177 114.4);

Tailwind

colors: {
  custom: {
    50: '#f7fe94',
    500: '#effe61',
    950: '#000000',
  },
}

SCSS

$custom: #effe61;
$custom-light: #f7fe94;
$custom-dark: #000000;

JSON

{
  "hex": "#effe61",
  "rgb": {
    "r": 239,
    "g": 254,
    "b": 97
  },
  "hsl": {
    "h": 65.732,
    "s": 98.742,
    "l": 68.824
  },
  "oklch": {
    "l": 0.95736,
    "c": 0.17746,
    "h": 114.4
  },
  "luminance": 0.90097
}

Semantic roles & 50–950 ramp

primary

#EFFE61

secondary

#3B2BD8

accent

#00E616

background

#FFFFFC

surface

#FFFFF5

border

#D7D7CF

text

#18170E

muted

#86857F

Preview Lab

Preview with #EFFE61

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

Preview Lab → · Contrast checker → · Palette generator →