Nerdulator> put something in

Recognised as Colour

#A33A04

  • #A33A04
  • Orange
  • Dark
  • Nearest: Dark red

#A33A04 is a orange with RGB values 163, 58, 4 and HSL 20°, 95%, 33%. It is a dark colour, so white text on it reaches 6.6:1 contrast (AA for normal text). The nearest named colour is Dark red.

Colour values

#A33A04#A33A04
HEX#A33A04
RGBrgb(163, 58, 4)
RGB (0–1)0.6392, 0.2275, 0.0157
RGB percentages63.9%, 22.7%, 1.6%
HSLhsl(20.4, 95.2%, 32.7%)
HSV / HSBhsv(20.4, 97.5%, 63.9%)
CMYK0%, 64.4%, 97.5%, 36.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer10,697,220
CSS custom property--colour: #A33A04;

Brightness & contrast

Relative luminance0.10821WCAG 2.x, 0 is black and 1 is white
Perceived brightness99.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.64:1
Contrast with white6.64:1WCAG normal text: AA
Contrast with black3.16:1WCAG normal text: Fail
Greyscale equivalent#4C4C4C
Inverted#5CC5FB

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#594E00no red cones; affects about 1% of men; ΔE 46.1 from the original
Deuteranopia#736500no green cones; the most common form, about 1% of men; ΔE 45.6 from the original
Tritanopia#B41B32no blue cones; rare, and affects men and women equally; ΔE 27.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.64:1WCAG large text: AAA
Contrast with black, large text3.16:1WCAG large text: AA

Named colours

Dark red · ΔE 16.8Saddle brown · ΔE 17.2Firebrick · ΔE 18.6Sienna · ΔE 18.8Chocolate · ΔE 18.8Maroon · ΔE 18.9
Nearest named CSS colourDark red (#8B0000)ΔE 16.75, a distinctly different colour
Hue familyorange
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#046DA3
Analogous#A3041D, #A38A04
Triadic#04A33A, #3A04A3
Split complementary#04A38A, #041DA3
Tetradic#1DA304, #046DA3, #8A04A3

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FCA477
Lighter +30%#FA8346
Lighter +20%#F96214
Lighter +10%#D54C05
Darker −10%#712803
Darker −20%#3F1702
Darker −30%#0E0500
Darker −40%#000000
More saturated +25%#A73900
Less saturated −25%#8E4119

Channel breakdown

R163
G58
B4
Red163 (63.9%)
Green58 (22.7%)
Blue4 (1.6%)
Hue20.38°
Saturation (HSL)95.21%
Lightness32.75%
Dominant channelRed
Hex per channelR A3 · G 3A · B 04

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Nerdulate something else

Nothing in mind? Surprise me · today’s page

Every value on this page was computed from “a33a04” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.