Recognised as Colour

#FFB621

#FFB621
Orange
Light
Nearest: Orange

#FFB621 is a orange with RGB values 255, 182, 33 and HSL 40°, 100%, 56%. It is a light colour, so black text on it reaches 12:1 contrast (AAA for normal text). The nearest named colour is Orange.

Colour values

#FFB621#FFB621

HEX#FFB621

RGBrgb(255, 182, 33)

RGB (0–1)1, 0.7137, 0.1294

RGB percentages100%, 71.4%, 12.9%

HSLhsl(40.3, 100%, 56.5%)

HSV / HSBhsv(40.3, 87.1%, 100%)

CMYK0%, 28.6%, 87.1%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,758,305

CSS custom property--colour: #FFB621;

Brightness & contrast

Relative luminance0.54826WCAG 2.x, 0 is black and 1 is white

Perceived brightness197.5 of 255ITU-R BT.601 weighting

Light or darkLight

Best text colour on this backgroundBlackcontrast 11.97:1

Contrast with white1.76:1WCAG normal text: Fail

Contrast with black11.97:1WCAG normal text: AAA

Greyscale equivalent#BBBBBB

Inverted#0049DE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#D2B900no red cones; affects about 1% of men; ΔE 21.8 from the original

Deuteranopia#E3CB2Ano green cones; the most common form, about 1% of men; ΔE 22.8 from the original

Tritanopia#FFA29Cno blue cones; rare, and affects men and women equally; ΔE 62 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text1.76:1WCAG large text: Fail

Contrast with black, large text11.97:1WCAG large text: AAA

Named colours

Orange · ΔE 9.6 Goldenrod · ΔE 13.3 Gold · ΔE 21.8 Dark orange · ΔE 23.4 Dark goldenrod · ΔE 24.8 Sandy brown · ΔE 31.3

Nearest named CSS colourOrange (#FFA500)ΔE 9.63, clearly different but related

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#216AFF

Analogous#FF4721, #D9FF21

Triadic#21FFB6, #B621FF

Split complementary#21D9FF, #4721FF

Tetradic#21FF47, #216AFF, #FF21D9

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#FFF9ED

Lighter +30%#FFE8BA

Lighter +20%#FFD887

Lighter +10%#FFC754

Darker −10%#ED9F00

Darker −20%#BA7D00

Darker −30%#875B00

Darker −40%#543800

More saturated +25%#FFB621

Less saturated −25%#E3AC3D

Channel breakdown

R255

G182

B33

Red255 (100%)

Green182 (71.4%)

Blue33 (12.9%)

Hue40.27°

Saturation (HSL)100%

Lightness56.47%

Dominant channelRed

Hex per channelR FF · G B6 · B 21

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FFB621 (chemical formula)

Formula
6,751.006 g/mol
623 atoms

FFB621 has a molar mass of 6,751.006 g/mol, made up of 623 atoms across 2 elements: 2 × F, 621 × B.

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Molar mass

Molar mass6,751.006 g/mol

Total atoms per molecule623

Distinct elements2

Mass of one molecule1.1210309 × 10^-20 g

Molecules per gram8.9203606 × 10^19

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

F0.6%

B99.4%

Fluorine (F × 2)37.996 g/mol, 0.563%

Boron (B × 621)6,713.01 g/mol, 99.437%

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Elements in this formula

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