Recognised as Colour
#FF8B45
- #FF8B45
- Orange
- Dark
- Nearest: Coral
#FF8B45 is a orange with RGB values 255, 139, 69 and HSL 23°, 100%, 64%. It is a dark colour, so black text on it reaches 9:1 contrast (AAA for normal text). The nearest named colour is Coral.
Colour values
#FF8B45#FF8B45
HEX#FF8B45
RGBrgb(255, 139, 69)
RGB (0–1)1, 0.5451, 0.2706
RGB percentages100%, 54.5%, 27.1%
HSLhsl(22.6, 100%, 63.5%)
HSV / HSBhsv(22.6, 72.9%, 100%)
CMYK0%, 45.5%, 72.9%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,747,333
CSS custom property--colour: #FF8B45;
Brightness & contrast
Relative luminance0.40155WCAG 2.x, 0 is black and 1 is white
Perceived brightness177 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.03:1
Contrast with white2.33:1WCAG normal text: Fail
Contrast with black9.03:1WCAG normal text: AAA
Greyscale equivalent#9F9F9F
Inverted#0074BA
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.33:1WCAG large text: Fail
Contrast with black, large text9.03:1WCAG large text: AAA
Named colours
Hue familyorange
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#45B9FF
Analogous#FF455C, #FFE845
Triadic#45FF8B, #8B45FF
Split complementary#45FFE8, #455CFF
Tetradic#5CFF45, #45B9FF, #E845FF
Tints, shades & saturation
Channel breakdown
R255
G139
B69
Red255 (100%)
Green139 (54.5%)
Blue69 (27.1%)
Hue22.58°
Saturation (HSL)100%
Lightness63.53%
Dominant channelRed
Hex per channelR FF · G 8B · B 45
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Harmonies
Similar named colours
Also reads as
FF8B45 (chemical formula)
- Formula
- 657.432 g/mol
- 54 atoms
FF8B45 has a molar mass of 657.432 g/mol, made up of 54 atoms across 2 elements: 9 × F, 45 × B.
Molar mass
Molar mass657.432 g/mol
Total atoms per molecule54
Distinct elements2
Mass of one molecule1.0916915 × 10^-21 g
Molecules per gram9.1600968 × 10^20
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
F26%
B74%
Fluorine (F × 9)170.982 g/mol, 26.008%
Boron (B × 45)486.45 g/mol, 73.992%
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