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Recognised as Colour

#FFA521

  • #FFA521
  • Orange
  • Dark
  • Nearest: Orange

#FFA521 is a orange with RGB values 255, 165, 33 and HSL 36°, 100%, 56%. It is a dark colour, so black text on it reaches 10.7:1 contrast (AAA for normal text). The nearest named colour is Orange.

Colour values

#FFA521#FFA521
HEX#FFA521
RGBrgb(255, 165, 33)
RGB (0–1)1, 0.6471, 0.1294
RGB percentages100%, 64.7%, 12.9%
HSLhsl(35.7, 100%, 56.5%)
HSV / HSBhsv(35.7, 87.1%, 100%)
CMYK0%, 35.3%, 87.1%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,753,953
CSS custom property--colour: #FFA521;

Brightness & contrast

Relative luminance0.4828WCAG 2.x, 0 is black and 1 is white
Perceived brightness188.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 10.66:1
Contrast with white1.97:1WCAG normal text: Fail
Contrast with black10.66:1WCAG normal text: AAA
Greyscale equivalent#AFAFAF
Inverted#005ADE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#C3AC00no red cones; affects about 1% of men; ΔE 30.6 from the original
Deuteranopia#D8C126no green cones; the most common form, about 1% of men; ΔE 31.3 from the original
Tritanopia#FF8F8Eno blue cones; rare, and affects men and women equally; ΔE 57.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.97:1WCAG large text: Fail
Contrast with black, large text10.66:1WCAG large text: AAA

Named colours

Orange · ΔE 5.3Dark orange · ΔE 13.8Goldenrod · ΔE 17.1Dark goldenrod · ΔE 24Sandy brown · ΔE 26.9Chocolate · ΔE 28.4
Nearest named CSS colourOrange (#FFA500)ΔE 5.35, clearly different but related
Hue familyorange
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#217BFF
Analogous#FF3621, #EAFF21
Triadic#21FFA5, #A521FF
Split complementary#21EAFF, #3621FF
Tetradic#21FF36, #217BFF, #FF21EA

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFF8ED
Lighter +30%#FFE3BA
Lighter +20%#FFCE87
Lighter +10%#FFBA54
Darker −10%#ED8D00
Darker −20%#BA6F00
Darker −30%#875000
Darker −40%#543200
More saturated +25%#FFA521
Less saturated −25%#E3A03D

Channel breakdown

R255
G165
B33
Red255 (100%)
Green165 (64.7%)
Blue33 (12.9%)
Hue35.68°
Saturation (HSL)100%
Lightness56.47%
Dominant channelRed
Hex per channelR FF · G A5 · B 21

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Every value on this page was computed from “ffa521” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.