Recognised as Colour

#FF100D

#FF100D
Red
Dark
Nearest: Red

#FF100D is a red with RGB values 255, 16, 13 and HSL 1°, 100%, 53%. It is a dark colour, so black text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Red.

Colour values

#FF100D#FF100D

HEX#FF100D

RGBrgb(255, 16, 13)

RGB (0–1)1, 0.0627, 0.051

RGB percentages100%, 6.3%, 5.1%

HSLhsl(0.7, 100%, 52.5%)

HSV / HSBhsv(0.7, 94.9%, 100%)

CMYK0%, 93.7%, 94.9%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,715,789

CSS custom property--colour: #FF100D;

Brightness & contrast

Relative luminance0.2166WCAG 2.x, 0 is black and 1 is white

Perceived brightness140 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.33:1

Contrast with white3.94:1WCAG normal text: Fail

Contrast with black5.33:1WCAG normal text: AA

Greyscale equivalent#434343

Inverted#00EFF2

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6E6100no red cones; affects about 1% of men; ΔE 85.7 from the original

Deuteranopia#A49100no green cones; the most common form, about 1% of men; ΔE 84.7 from the original

Tritanopia#FF0019no blue cones; rare, and affects men and women equally; ΔE 4.4 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text3.94:1WCAG large text: AA

Contrast with black, large text5.33:1WCAG large text: AAA

Named colours

Red · ΔE 3.2 Orange red · ΔE 12.8 Tomato · ΔE 28.9 Crimson · ΔE 32.4 Firebrick · ΔE 38.1 Coral · ΔE 40

Nearest named CSS colourRed (#FF0000)ΔE 3.2, a close match

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0DFCFF

Analogous#FF0D83, #FF890D

Triadic#0DFF10, #100DFF

Split complementary#0DFF89, #0D83FF

Tetradic#83FF0D, #0DFCFF, #890DFF

Tints, shades & saturation

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

Lighter +40%#FFD9D9

Lighter +30%#FFA7A6

Lighter +20%#FF7573

Lighter +10%#FF4240

Darker −10%#D90300

Darker −20%#A60200

Darker −30%#730100

Darker −40%#400100

More saturated +25%#FF100D

Less saturated −25%#E12E2B

Channel breakdown

R255

G16

B13

Red255 (100%)

Green16 (6.3%)

Blue13 (5.1%)

Hue0.74°

Saturation (HSL)100%

Lightness52.55%

Dominant channelRed

Hex per channelR FF · G 10 · B 0D

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

#FF100D

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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