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Recognised as Colour

#B23F01

  • #B23F01
  • Orange
  • Dark
  • Nearest: Chocolate

#B23F01 is a orange with RGB values 178, 63, 1 and HSL 21°, 99%, 35%. It is a dark colour, so white text on it reaches 5.8:1 contrast (AA for normal text). The nearest named colour is Chocolate.

Colour values

#B23F01#B23F01
HEX#B23F01
RGBrgb(178, 63, 1)
RGB (0–1)0.698, 0.2471, 0.0039
RGB percentages69.8%, 24.7%, 0.4%
HSLhsl(21, 98.9%, 35.1%)
HSV / HSBhsv(21, 99.4%, 69.8%)
CMYK0%, 64.6%, 99.4%, 30.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer11,681,537
CSS custom property--colour: #B23F01;

Brightness & contrast

Relative luminance0.13022WCAG 2.x, 0 is black and 1 is white
Perceived brightness108.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.83:1
Contrast with white5.83:1WCAG normal text: AA
Contrast with black3.6:1WCAG normal text: Fail
Greyscale equivalent#535353
Inverted#4DC0FE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#615500no red cones; affects about 1% of men; ΔE 49.7 from the original
Deuteranopia#7D6F00no green cones; the most common form, about 1% of men; ΔE 49.8 from the original
Tritanopia#C41C36no blue cones; rare, and affects men and women equally; ΔE 29.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.83:1WCAG large text: AAA
Contrast with black, large text3.6:1WCAG large text: AA

Named colours

Chocolate · ΔE 15.5Firebrick · ΔE 19.9Dark red · ΔE 20.2Saddle brown · ΔE 22.8Maroon · ΔE 23.5Sienna · ΔE 23.7
Nearest named CSS colourChocolate (#D2691E)ΔE 15.54, a distinctly different colour
Hue familyorange
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#0174B2
Analogous#B2011B, #B29801
Triadic#01B23F, #3F01B2
Split complementary#01B297, #011CB2
Tetradic#1BB201, #0174B2, #9701B2

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FEAD81
Lighter +30%#FE8C4E
Lighter +20%#FE6B1B
Lighter +10%#E55101
Darker −10%#7F2D01
Darker −20%#4D1B00
Darker −30%#1A0900
Darker −40%#000000
More saturated +25%#B33F00
Less saturated −25%#9C4617

Channel breakdown

R178
G63
B1
Red178 (69.8%)
Green63 (24.7%)
Blue1 (0.4%)
Hue21.02°
Saturation (HSL)98.88%
Lightness35.1%
Dominant channelRed
Hex per channelR B2 · G 3F · B 01

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Every value on this page was computed from “b23f01” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.