Firebrick
Firebrick (#B5271D) is an intense dark color with a luminosity of 11%. It has a chroma value of 59.6 (out of 100). The closest web-safe color is #CC3333. The closest Pantone color is #BC322C, known as valiant-poppy (18-1549). The closest NCS color is #AA2D21, with the code NCS S 2570-Y80R. The grayscale version of this color is #515151. The contrast ratio with white is 6.4, and with black is 3.3. This meets the WCAG standard (4.5:1) for regular text (14pt) on a white background.
Lightness
Show relative
#FFFFFF
#F8D5D3
#F1ACA7
#EA827B
#E3594F
#DC2F23
#B0261C
#841C15
#58130E
#2C0907
#000000
Saturation
#DB0600
#D30D00
#CC1306
#C41A0E
#BD2015
#B5271D
#AD2E25
#A6342C
#9E3B34
#97413B
#8F4843
Shade
#B5352C
#B53229
#B52F26
#B52C23
#B52A20
#B5271D
#AE271D
#A6261D
#9F261D
#97251D
#90251D
Hue
#B51D1D
#B5361D
#B5501D
#B5691D
#B5821D
#B59C1D
#B5B51D
#9CB51D
#82B51D
#69B51D
#50B51D
#36B51D
#1DB51D
#1DB536
#1DB550
#1DB569
#1DB582
#1DB59C
#1DB5B5
#1D9CB5
#1D82B5
#1D69B5
#1D50B5
#1D36B5
#1D1DB5
#361DB5
#501DB5
#691DB5
#821DB5
#9C1DB5
#B51DB5
#B51D9C
#B51D82
#B51D69
#B51D50
#B51D36
Grayscale
#515151
Complimentary
#4AD8E2
WCAG contrast conformance
#B5271D meets the WCAG standard (4.5:1) for regular text (14pt) on a white background.
On a white background
Firebrick
On a black background
Firebrick
Firebrick (#B5271D) meets the WCAG standard (4.5:1) for regular text (14pt) on a khaki (#E2DE8E) background.
Firebrick
Composition
The colors that composes #B5271D
RGB
181
39
29
RYB
181
40
29
CMYK
0
78
84
29
CMY
29
85
89
Conversion
CSS values of #B5271D and various standards
CSS values
HEX
#B5271D
RGB
rgb(181, 39, 29)
HSL
hsl(4, 72%, 41%)
HWB
hwb(4, 11%, 29%)
Various standards
Ansi16
rgb(128, 0, 0)
Ansi256
rgb(204, 51, 51)
HCG
rgb(181, 39, 29)
Apple
rgb(181, 39, 29)
Closest Pantone color
valiant-poppy (18-1549)
#BC322C
Closest NCS color
NCS S 2570-Y80R
#AA2D21
Color harmonies
The basic color chords based on the color wheel
Split complementary
#1D5FB5
#B5271D
#1DB573
Triadic
#B5271D
#1DB527
#271DB5
Tetradic
#B5271D
#5FB51D
#1DABB5
#731DB5
Analogous
#B51D5F
#B5271D
#B5731D
Color blindness
Below is a simulation map of how people with vision deciciency perceive your color
Achromatopsia
#444444
Deuteranopia
#565619
Protanopia
#3F3F1C
Tritanopia
#B62626