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Recognised as Colour

#EFA31F

  • #EFA31F
  • Orange
  • Dark
  • Nearest: Orange

#EFA31F is a orange with RGB values 239, 163, 31 and HSL 38°, 87%, 53%. It is a dark colour, so black text on it reaches 9.9:1 contrast (AAA for normal text). The nearest named colour is Orange.

Colour values

#EFA31F#EFA31F
HEX#EFA31F
RGBrgb(239, 163, 31)
RGB (0–1)0.9373, 0.6392, 0.1216
RGB percentages93.7%, 63.9%, 12.2%
HSLhsl(38.1, 86.7%, 52.9%)
HSV / HSBhsv(38.1, 87%, 93.7%)
CMYK0%, 31.8%, 87%, 6.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer15,704,863
CSS custom property--colour: #EFA31F;

Brightness & contrast

Relative luminance0.44644WCAG 2.x, 0 is black and 1 is white
Perceived brightness181.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.93:1
Contrast with white2.12:1WCAG normal text: Fail
Contrast with black9.93:1WCAG normal text: AAA
Greyscale equivalent#AAAAAA
Inverted#105CE0

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#BEA700no red cones; affects about 1% of men; ΔE 24.4 from the original
Deuteranopia#D0BA25no green cones; the most common form, about 1% of men; ΔE 25.5 from the original
Tritanopia#FF8F8Cno blue cones; rare, and affects men and women equally; ΔE 56.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.12:1WCAG large text: Fail
Contrast with black, large text9.93:1WCAG large text: AAA

Named colours

Orange · ΔE 9.4Goldenrod · ΔE 10.6Dark goldenrod · ΔE 18.3Dark orange · ΔE 18.9Sandy brown · ΔE 25.1Peru · ΔE 26.1
Nearest named CSS colourOrange (#FFA500)ΔE 9.45, clearly different but related
Hue familyorange
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#1F6BEF
Analogous#EF3B1F, #D3EF1F
Triadic#1FEFA3, #A31FEF
Split complementary#1FD3EF, #3B1FEF
Tetradic#1FEF3B, #1F6BEF, #EF1FD3

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FDF1DD
Lighter +30%#F9DEAE
Lighter +20%#F6CA7E
Lighter +10%#F2B74F
Darker −10%#CC870F
Darker −20%#9D680B
Darker −30%#6D4808
Darker −40%#3E2904
More saturated +25%#FFA70F
Less saturated −25%#D19B3D

Channel breakdown

R239
G163
B31
Red239 (93.7%)
Green163 (63.9%)
Blue31 (12.2%)
Hue38.08°
Saturation (HSL)86.67%
Lightness52.94%
Dominant channelRed
Hex per channelR EF · G A3 · B 1F

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Every value on this page was computed from “efa31f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.