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Colour

#FDFF01

  • #FDFF01
  • Yellow
  • Light
  • Nearest: Yellow

#FDFF01 is a yellow with RGB values 253, 255, 1 and HSL 60°, 100%, 50%. It is a light colour, so black text on it reaches 19.5:1 contrast (AAA for normal text). The nearest named colour is Yellow.

Colour values

#FDFF01#FDFF01
HEX#FDFF01
RGBrgb(253, 255, 1)
RGB (0–1)0.9922, 1, 0.0039
RGB percentages99.2%, 100%, 0.4%
HSLhsl(60.5, 100%, 50.2%)
HSV / HSBhsv(60.5, 99.6%, 100%)
CMYK0.8%, 0%, 99.6%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,645,889
CSS custom property--colour: #FDFF01;

Brightness & contrast

Relative luminance0.92405WCAG 2.x, 0 is black and 1 is white
Perceived brightness239.4 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 19.48:1
Contrast with white1.08:1WCAG normal text: Fail
Contrast with black19.48:1WCAG normal text: AAA
Greyscale equivalent#ECECEC
Inverted#0200FE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#FFF300no red cones; affects about 1% of men; ΔE 7.5 from the original
Deuteranopia#FFF932no green cones; the most common form, about 1% of men; ΔE 9 from the original
Tritanopia#FFEED9no blue cones; rare, and affects men and women equally; ΔE 85.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.08:1WCAG large text: Fail
Contrast with black, large text19.48:1WCAG large text: AAA

Named colours

Yellow · ΔE 0.9Gold · ΔE 23.9Green yellow · ΔE 32.9Yellow green · ΔE 37.8Chartreuse · ΔE 47Lawn green · ΔE 47.1
Nearest named CSS colourYellow (#FFFF00)ΔE 0.86, indistinguishable to the eye
Hue familyyellow
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#0301FF
Analogous#FF8201, #7EFF01
Triadic#01FDFF, #FF01FD
Split complementary#017EFF, #8201FF
Tetradic#01FF82, #0301FF, #FF017E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFCD
Lighter +30%#FEFF9A
Lighter +20%#FEFF67
Lighter +10%#FDFF34
Darker −10%#CBCD00
Darker −20%#999A00
Darker −30%#666700
Darker −40%#343400
More saturated +25%#FDFF01
Less saturated −25%#DEDF21

Channel breakdown

R253
G255
B1
Red253 (99.2%)
Green255 (100%)
Blue1 (0.4%)
Hue60.47°
Saturation (HSL)100%
Lightness50.2%
Dominant channelGreen
Hex per channelR FD · G FF · B 01

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Every value on this page was computed from “fdff01” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.