Colour

#FF1633

#FF1633
Red
Dark
Nearest: Crimson

#FF1633 is a red with RGB values 255, 22, 51 and HSL 353°, 100%, 54%. 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

#FF1633#FF1633

HEX#FF1633

RGBrgb(255, 22, 51)

RGB (0–1)1, 0.0863, 0.2

RGB percentages100%, 8.6%, 20%

HSLhsl(352.5, 100%, 54.3%)

HSV / HSBhsv(352.5, 91.4%, 100%)

CMYK0%, 91.4%, 80%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,717,363

CSS custom property--colour: #FF1633;

Brightness & contrast

Relative luminance0.22073WCAG 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 5.41:1

Contrast with white3.88:1WCAG normal text: Fail

Contrast with black5.41:1WCAG normal text: AA

Greyscale equivalent#4A4A4A

Inverted#00E9CC

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6D6331no red cones; affects about 1% of men; ΔE 85.3 from the original

Deuteranopia#A39227no green cones; the most common form, about 1% of men; ΔE 85 from the original

Tritanopia#FF0027no blue cones; rare, and affects men and women equally; ΔE 5.8 from the original

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

Contrast with white, large text3.88:1WCAG large text: AA

Contrast with black, large text5.41:1WCAG large text: AAA

Named colours

Crimson · ΔE 18.3 Red · ΔE 18.8 Tomato · ΔE 22.8 Orange red · ΔE 23.7 Firebrick · ΔE 29.6 Coral · ΔE 36.2

Nearest named CSS colourCrimson (#DC143C)ΔE 18.33, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#16FFE2

Analogous#FF16A7, #FF6E16

Triadic#33FF16, #1633FF

Split complementary#16FF6E, #16A7FF

Tetradic#A7FF16, #16FFE2, #6E16FF

Tints, shades & saturation

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

Lighter +40%#FFE2E6

Lighter +30%#FFAFB9

Lighter +20%#FF7C8C

Lighter +10%#FF4960

Darker −10%#E2001C

Darker −20%#AF0016

Darker −30%#7C000F

Darker −40%#490009

More saturated +25%#FF1633

Less saturated −25%#E23349

Channel breakdown

R255

G22

B51

Red255 (100%)

Green22 (8.6%)

Blue51 (20%)

Hue352.53°

Saturation (HSL)100%

Lightness54.31%

Dominant channelRed

Hex per channelR FF · G 16 · B 33

Keep nerding

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

#FF1633

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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