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Colour

#BF421B

  • #BF421B
  • Red
  • Dark
  • Nearest: Firebrick

#BF421B is a red with RGB values 191, 66, 27 and HSL 14°, 75%, 43%. It is a dark colour, so white text on it reaches 5.2:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#BF421B#BF421B
HEX#BF421B
RGBrgb(191, 66, 27)
RGB (0–1)0.749, 0.2588, 0.1059
RGB percentages74.9%, 25.9%, 10.6%
HSLhsl(14.3, 75.2%, 42.7%)
HSV / HSBhsv(14.3, 85.9%, 74.9%)
CMYK0%, 65.4%, 85.9%, 25.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,534,299
CSS custom property--colour: #BF421B;

Brightness & contrast

Relative luminance0.15052WCAG 2.x, 0 is black and 1 is white
Perceived brightness116.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.24:1
Contrast with white5.24:1WCAG normal text: AA
Contrast with black4.01:1WCAG normal text: Fail
Greyscale equivalent#5A5A5A
Inverted#40BDE4

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#675B14no red cones; affects about 1% of men; ΔE 53.1 from the original
Deuteranopia#857714no green cones; the most common form, about 1% of men; ΔE 53.8 from the original
Tritanopia#D31C3Bno blue cones; rare, and affects men and women equally; ΔE 24.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.24:1WCAG large text: AAA
Contrast with black, large text4.01:1WCAG large text: AA

Named colours

Firebrick · ΔE 14.4Chocolate · ΔE 17.6Dark red · ΔE 19.1Tomato · ΔE 19.1Brown · ΔE 19.4Coral · ΔE 21.8
Nearest named CSS colourFirebrick (#B22222)ΔE 14.44, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#1B98BF
Analogous#BF1B46, #BF941B
Triadic#1BBF42, #421BBF
Split complementary#1BBF94, #1B46BF
Tetradic#46BF1B, #1B98BF, #941BBF

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F4C2B2
Lighter +30%#EE9E85
Lighter +20%#E77B59
Lighter +10%#E1572C
Darker −10%#923315
Darker −20%#66230E
Darker −30%#391408
Darker −40%#0C0402
More saturated +25%#DA3400
Less saturated −25%#A45036

Channel breakdown

R191
G66
B27
Red191 (74.9%)
Green66 (25.9%)
Blue27 (10.6%)
Hue14.27°
Saturation (HSL)75.23%
Lightness42.75%
Dominant channelRed
Hex per channelR BF · G 42 · B 1B

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Every value on this page was computed from “bf421b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.