Colour

#FF103A

#FF103A
Red
Dark
Nearest: Crimson

#FF103A is a red with RGB values 255, 16, 58 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

#FF103A#FF103A

HEX#FF103A

RGBrgb(255, 16, 58)

RGB (0–1)1, 0.0627, 0.2275

RGB percentages100%, 6.3%, 22.7%

HSLhsl(349.5, 100%, 53.1%)

HSV / HSBhsv(349.5, 93.7%, 100%)

CMYK0%, 93.7%, 77.3%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,715,834

CSS custom property--colour: #FF103A;

Brightness & contrast

Relative luminance0.21936WCAG 2.x, 0 is black and 1 is white

Perceived brightness141.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.39:1

Contrast with white3.9:1WCAG normal text: Fail

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

Greyscale equivalent#464646

Inverted#00EFC5

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6C6239no red cones; affects about 1% of men; ΔE 85.4 from the original

Deuteranopia#A29230no green cones; the most common form, about 1% of men; ΔE 85.9 from the original

Tritanopia#FF0028no blue cones; rare, and affects men and women equally; ΔE 9 from the original

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

Contrast with white, large text3.9:1WCAG large text: AA

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

Named colours

Crimson · ΔE 15.7 Red · ΔE 22.8 Tomato · ΔE 23.6 Orange red · ΔE 27.5 Firebrick · ΔE 29 Brown · ΔE 37.1

Nearest named CSS colourCrimson (#DC143C)ΔE 15.67, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#10FFD5

Analogous#FF10B1, #FF5E10

Triadic#3AFF10, #103AFF

Split complementary#10FF5E, #10B1FF

Tetradic#B1FF10, #10FFD5, #5E10FF

Tints, shades & saturation

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

Lighter +40%#FFDCE2

Lighter +30%#FFA9B8

Lighter +20%#FF768E

Lighter +10%#FF4364

Darker −10%#DC0027

Darker −20%#A9001E

Darker −30%#760015

Darker −40%#43000C

More saturated +25%#FF103A

Less saturated −25%#E12E4D

Channel breakdown

R255

G16

B58

Red255 (100%)

Green16 (6.3%)

Blue58 (22.7%)

Hue349.46°

Saturation (HSL)100%

Lightness53.14%

Dominant channelRed

Hex per channelR FF · G 10 · B 3A

Keep nerding

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

#FF103A

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

Nerdulate something else