Colour
#FF5306
- #FF5306
- Orange
- Dark
- Nearest: Orange red
#FF5306 is a orange with RGB values 255, 83, 6 and HSL 19°, 100%, 51%. It is a dark colour, so black text on it reaches 6.5:1 contrast (AA for normal text). The nearest named colour is Orange red.
Colour values
#FF5306#FF5306
HEX#FF5306
RGBrgb(255, 83, 6)
RGB (0–1)1, 0.3255, 0.0235
RGB percentages100%, 32.5%, 2.4%
HSLhsl(18.6, 100%, 51.2%)
HSV / HSBhsv(18.6, 97.6%, 100%)
CMYK0%, 67.5%, 97.6%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,732,934
CSS custom property--colour: #FF5306;
Brightness & contrast
Relative luminance0.2746WCAG 2.x, 0 is black and 1 is white
Perceived brightness153.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.49:1
Contrast with white3.23:1WCAG normal text: Fail
Contrast with black6.49:1WCAG normal text: AA
Greyscale equivalent#727272
Inverted#00ACF9
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.23:1WCAG large text: AA
Contrast with black, large text6.49:1WCAG large text: AAA
Named colours
Hue familyorange
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#06B2FF
Analogous#FF0635, #FFD006
Triadic#06FF53, #5306FF
Split complementary#06FFD0, #0635FF
Tetradic#35FF06, #06B2FF, #D006FF
Tints, shades & saturation
Channel breakdown
R255
G83
B6
Red255 (100%)
Green83 (32.5%)
Blue6 (2.4%)
Hue18.55°
Saturation (HSL)100%
Lightness51.18%
Dominant channelRed
Hex per channelR FF · G 53 · B 06
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Also reads as
FF5306 (chemical formula)
- Formula
- 100,822.386 g/mol
- 5307 atoms
FF5306 has a molar mass of 100,822.386 g/mol, made up of 5307 atoms across 1 element: 5307 × F.
Molar mass
Molar mass100,822.386 g/mol
Total atoms per molecule5307
Distinct elements1
Mass of one molecule1.6741951 × 10^-19 g
Molecules per gram5.9730195 × 10^18
Composition by mass
F100%
Fluorine (F × 5307)100,822.386 g/mol, 100%
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