Recognised as Colour
#CA3437
- #CA3437
- Red
- Dark
- Nearest: Firebrick
#CA3437 is a red with RGB values 202, 52, 55 and HSL 359°, 59%, 50%. 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
#CA3437#CA3437
HEX#CA3437
RGBrgb(202, 52, 55)
RGB (0–1)0.7922, 0.2039, 0.2157
RGB percentages79.2%, 20.4%, 21.6%
HSLhsl(358.8, 59.1%, 49.8%)
HSV / HSBhsv(358.8, 74.3%, 79.2%)
CMYK0%, 74.3%, 72.8%, 20.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer13,251,639
CSS custom property--colour: #CA3437;
Brightness & contrast
Relative luminance0.15288WCAG 2.x, 0 is black and 1 is white
Perceived brightness118.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.18:1
Contrast with white5.18:1WCAG normal text: AA
Contrast with black4.06:1WCAG normal text: Fail
Greyscale equivalent#545454
Inverted#35CBC8
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.18:1WCAG large text: AAA
Contrast with black, large text4.06:1WCAG large text: AA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#34CAC7
Analogous#CA3482, #CA7C34
Triadic#37CA34, #3437CA
Split complementary#34CA7C, #3482CA
Tetradic#82CA34, #34CAC7, #7C34CA
Tints, shades & saturation
Channel breakdown
R202
G52
B55
Red202 (79.2%)
Green52 (20.4%)
Blue55 (21.6%)
Hue358.8°
Saturation (HSL)59.06%
Lightness49.8%
Dominant channelRed
Hex per channelR CA · G 34 · B 37
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Also reads as
Ca3437 (chemical formula)
- Formula
- 137,748.086 g/mol
- 3437 atoms
Ca3437 has a molar mass of 137,748.086 g/mol, made up of 3437 atoms across 1 element: 3437 × Ca.
Molar mass
Molar mass137,748.086 g/mol
Total atoms per molecule3437
Distinct elements1
Mass of one molecule2.2873608 × 10^-19 g
Molecules per gram4.3718508 × 10^18
Name
NameNot in the name tablea name cannot be worked out from a formula alone: isomers share formulas, and naming depends on bonding the formula does not show
Composition by mass
Ca100%
Calcium (Ca × 3437)137,748.086 g/mol, 100%
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