Colour
#EFC504
- #EFC504
- Yellow
- Light
- Nearest: Gold
#EFC504 is a yellow with RGB values 239, 197, 4 and HSL 49°, 97%, 48%. It is a light colour, so black text on it reaches 12.7:1 contrast (AAA for normal text). The nearest named colour is Gold.
Colour values
#EFC504#EFC504
HEX#EFC504
RGBrgb(239, 197, 4)
RGB (0–1)0.9373, 0.7725, 0.0157
RGB percentages93.7%, 77.3%, 1.6%
HSLhsl(49.3, 96.7%, 47.6%)
HSV / HSBhsv(49.3, 98.3%, 93.7%)
CMYK0%, 17.6%, 98.3%, 6.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer15,713,540
CSS custom property--colour: #EFC504;
Brightness & contrast
Relative luminance0.58292WCAG 2.x, 0 is black and 1 is white
Perceived brightness199.7 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 12.66:1
Contrast with white1.66:1WCAG normal text: Fail
Contrast with black12.66:1WCAG normal text: AAA
Greyscale equivalent#C0C0C0
Inverted#103AFB
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.66:1WCAG large text: Fail
Contrast with black, large text12.66:1WCAG large text: AAA
Named colours
Hue familyyellow
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#042EEF
Analogous#EF4F04, #A4EF04
Triadic#04EFC5, #C504EF
Split complementary#04A3EF, #5004EF
Tetradic#04EF4F, #042EEF, #EF04A3
Tints, shades & saturation
Channel breakdown
R239
G197
B4
Red239 (93.7%)
Green197 (77.3%)
Blue4 (1.6%)
Hue49.28°
Saturation (HSL)96.71%
Lightness47.65%
Dominant channelRed
Hex per channelR EF · G C5 · B 04
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