Firebrick
Firebrick (#B21A1F) is an intense dark color with a luminosity of 10%. It has a chroma value of 59.6 (out of 100). The closest web-safe color is #993333. The closest Pantone color is #B4262A, known as aura-orange (18-1551). The closest NCS color is #BD1921, with the code NCS S 1580-Y90R. The grayscale version of this color is #484848. The contrast ratio with white is 6.9, and with black is 3.1. This meets the WCAG standard (4.5:1) for regular text (14pt) on a white background.
Lightness
Show relative
#FFFFFF
#F8D3D4
#F2A6A8
#EB7A7D
#E54D52
#DF2127
#B21A1F
#861317
#590D0F
#2D0608
#000000
Saturation
#D80000
#D00003
#C9030A
#C10B11
#BA1218
#B21A1F
#AA2226
#A3292D
#9B3134
#94383B
#8C4042
Shade
#B2272C
#B22429
#B22227
#B21F24
#B21D22
#B21A1F
#AA1A1F
#A31A1E
#9B1A1E
#931A1E
#8C1A1E
Hue
#B21A1A
#B2331A
#B24D1A
#B2661A
#B27F1A
#B2991A
#B2B21A
#99B21A
#7FB21A
#66B21A
#4DB21A
#33B21A
#1AB21A
#1AB233
#1AB24D
#1AB266
#1AB27F
#1AB299
#1AB2B2
#1A99B2
#1A7FB2
#1A66B2
#1A4DB2
#1A33B2
#1A1AB2
#331AB2
#4D1AB2
#661AB2
#7F1AB2
#991AB2
#B21AB2
#B21A99
#B21A7F
#B21A66
#B21A4D
#B21A33
Grayscale
#484848
Complimentary
#4DE5E0
WCAG contrast conformance
#B21A1F 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 (#B21A1F) does not meet the WCAG standard for either regular or large text on a steelblue (#347EB6) background.
Firebrick
Composition
The colors that composes #B21A1F
RGB
178
26
31
RYB
178
26
31
CMYK
0
85
83
30
CMY
30
90
88
Conversion
CSS values of #B21A1F and various standards
CSS values
HEX
#B21A1F
RGB
rgb(178, 26, 31)
HSL
hsl(358, 75%, 40%)
HWB
hwb(358, 10%, 30%)
Various standards
Ansi16
rgb(128, 0, 0)
Ansi256
rgb(153, 51, 51)
HCG
rgb(178, 26, 31)
Apple
rgb(178, 26, 31)
Closest Pantone color
aura-orange (18-1551)
#B4262A
Closest NCS color
NCS S 1580-Y90R
#BD1921
Color harmonies
The basic color chords based on the color wheel
Split complementary
#1A6BB2
#B21A1F
#1AB261
Triadic
#B21A1F
#1FB21A
#1A1FB2
Tetradic
#B21A1F
#6BB21A
#1AB2AD
#611AB2
Analogous
#B21A6B
#B21A1F
#B2611A
Color blindness
Below is a simulation map of how people with vision deciciency perceive your color
Achromatopsia
#3B3B3B
Deuteranopia
#4C4C1B
Protanopia
#34341E
Tritanopia
#B11B1B