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Colour

#D33F00

  • #D33F00
  • Orange
  • Dark
  • Nearest: Orange red

#D33F00 is a orange with RGB values 211, 63, 0 and HSL 18°, 100%, 41%. It is a dark colour, so white text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Orange red.

Colour values

#D33F00#D33F00
HEX#D33F00
RGBrgb(211, 63, 0)
RGB (0–1)0.8275, 0.2471, 0
RGB percentages82.7%, 24.7%, 0%
HSLhsl(17.9, 100%, 41.4%)
HSV / HSBhsv(17.9, 100%, 82.7%)
CMYK0%, 70.1%, 100%, 17.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer13,844,224
CSS custom property--colour: #D33F00;

Brightness & contrast

Relative luminance0.17404WCAG 2.x, 0 is black and 1 is white
Perceived brightness125.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.69:1
Contrast with white4.69:1WCAG normal text: AA
Contrast with black4.48:1WCAG normal text: Fail
Greyscale equivalent#5A5A5A
Inverted#2CC0FF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6D5F00no red cones; affects about 1% of men; ΔE 61.5 from the original
Deuteranopia#918000no green cones; the most common form, about 1% of men; ΔE 61.2 from the original
Tritanopia#E90036no blue cones; rare, and affects men and women equally; ΔE 28.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.69:1WCAG large text: AAA
Contrast with black, large text4.48:1WCAG large text: AA

Named colours

Orange red · ΔE 17.1Tomato · ΔE 19.4Chocolate · ΔE 20.6Firebrick · ΔE 24.6Coral · ΔE 24.9Red · ΔE 25.4
Nearest named CSS colourOrange red (#FF4500)ΔE 17.07, a distinctly different colour
Hue familyorange
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#0094D3
Analogous#D3002A, #D3A900
Triadic#00D33F, #3F00D3
Split complementary#00D3A9, #002AD3
Tetradic#2AD300, #0094D3, #A900D3

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFBCA0
Lighter +30%#FF996D
Lighter +20%#FF753A
Lighter +10%#FF5107
Darker −10%#A03000
Darker −20%#6D2100
Darker −30%#3A1100
Darker −40%#070200
More saturated +25%#D33F00
Less saturated −25%#B94A1A

Channel breakdown

R211
G63
B0
Red211 (82.7%)
Green63 (24.7%)
Blue0 (0%)
Hue17.91°
Saturation (HSL)100%
Lightness41.37%
Dominant channelRed
Hex per channelR D3 · G 3F · B 00

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Every value on this page was computed from “d33f00” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.