Colour

#FF1833

#FF1833
Red
Dark
Nearest: Crimson

#FF1833 is a red with RGB values 255, 24, 51 and HSL 353°, 100%, 55%. 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

#FF1833#FF1833

HEX#FF1833

RGBrgb(255, 24, 51)

RGB (0–1)1, 0.0941, 0.2

RGB percentages100%, 9.4%, 20%

HSLhsl(353, 100%, 54.7%)

HSV / HSBhsv(353, 90.6%, 100%)

CMYK0%, 90.6%, 80%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,717,875

CSS custom property--colour: #FF1833;

Brightness & contrast

Relative luminance0.22152WCAG 2.x, 0 is black and 1 is white

Perceived brightness141.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.43:1

Contrast with white3.87:1WCAG normal text: Fail

Contrast with black5.43:1WCAG normal text: AA

Greyscale equivalent#4B4B4B

Inverted#00E7CC

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6E6331no red cones; affects about 1% of men; ΔE 84.6 from the original

Deuteranopia#A39227no green cones; the most common form, about 1% of men; ΔE 84.7 from the original

Tritanopia#FF0028no blue cones; rare, and affects men and women equally; ΔE 5.3 from the original

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

Contrast with white, large text3.87:1WCAG large text: AA

Contrast with black, large text5.43:1WCAG large text: AAA

Named colours

Crimson · ΔE 18.3 Red · ΔE 18.8 Tomato · ΔE 22.5 Orange red · ΔE 23.5 Firebrick · ΔE 29.5 Coral · ΔE 35.9

Nearest named CSS colourCrimson (#DC143C)ΔE 18.32, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#18FFE4

Analogous#FF18A6, #FF7018

Triadic#33FF18, #1833FF

Split complementary#18FF70, #18A6FF

Tetradic#A7FF18, #18FFE4, #7118FF

Tints, shades & saturation

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

Lighter +40%#FFE4E7

Lighter +30%#FFB1BA

Lighter +20%#FF7E8D

Lighter +10%#FF4B60

Darker −10%#E4001B

Darker −20%#B10015

Darker −30%#7E000F

Darker −40%#4B0009

More saturated +25%#FF1833

Less saturated −25%#E23549

Channel breakdown

R255

G24

B51

Red255 (100%)

Green24 (9.4%)

Blue51 (20%)

Hue352.99°

Saturation (HSL)100%

Lightness54.71%

Dominant channelRed

Hex per channelR FF · G 18 · B 33

Keep nerding

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

#FF1833

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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