Recognised as Colour

#FF103D

#FF103D
Red
Dark
Nearest: Crimson

#FF103D is a red with RGB values 255, 16, 61 and HSL 349°, 100%, 53%. It is a dark colour, so black text on it reaches 5.4:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#FF103D#FF103D

HEX#FF103D

RGBrgb(255, 16, 61)

RGB (0–1)1, 0.0627, 0.2392

RGB percentages100%, 6.3%, 23.9%

HSLhsl(348.7, 100%, 53.1%)

HSV / HSBhsv(348.7, 93.7%, 100%)

CMYK0%, 93.7%, 76.1%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,715,837

CSS custom property--colour: #FF103D;

Brightness & contrast

Relative luminance0.21968WCAG 2.x, 0 is black and 1 is white

Perceived brightness141.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.39:1

Contrast with white3.89:1WCAG normal text: Fail

Contrast with black5.39:1WCAG normal text: AA

Greyscale equivalent#464646

Inverted#00EFC2

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6B623Cno red cones; affects about 1% of men; ΔE 85.7 from the original

Deuteranopia#A29233no green cones; the most common form, about 1% of men; ΔE 85.8 from the original

Tritanopia#FF0029no blue cones; rare, and affects men and women equally; ΔE 10.2 from the original

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

Contrast with white, large text3.89:1WCAG large text: AA

Contrast with black, large text5.39:1WCAG large text: AAA

Named colours

Crimson · ΔE 14.6 Tomato · ΔE 23.8 Red · ΔE 24.4 Firebrick · ΔE 28.7 Orange red · ΔE 29.1 Brown · ΔE 36.6

Nearest named CSS colourCrimson (#DC143C)ΔE 14.65, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#10FFD2

Analogous#FF10B4, #FF5B10

Triadic#3DFF10, #103DFF

Split complementary#10FF5B, #10B4FF

Tetradic#B4FF10, #10FFD2, #5B10FF

Tints, shades & saturation

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

Lighter +40%#FFDCE3

Lighter +30%#FFA9B9

Lighter +20%#FF7690

Lighter +10%#FF4366

Darker −10%#DC0029

Darker −20%#A90020

Darker −30%#760016

Darker −40%#43000D

More saturated +25%#FF103D

Less saturated −25%#E12E50

Channel breakdown

R255

G16

B61

Red255 (100%)

Green16 (6.3%)

Blue61 (23.9%)

Hue348.7°

Saturation (HSL)100%

Lightness53.14%

Dominant channelRed

Hex per channelR FF · G 10 · B 3D

Keep nerding

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

#FF103D

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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