Colour

#FF401F

#FF401F
Red
Dark
Nearest: Orange red

#FF401F is a red with RGB values 255, 64, 31 and HSL 9°, 100%, 56%. It is a dark colour, so black text on it reaches 6:1 contrast (AA for normal text). The nearest named colour is Orange red.

Colour values

#FF401F#FF401F

HEX#FF401F

RGBrgb(255, 64, 31)

RGB (0–1)1, 0.251, 0.1216

RGB percentages100%, 25.1%, 12.2%

HSLhsl(8.8, 100%, 56.1%)

HSV / HSBhsv(8.8, 87.8%, 100%)

CMYK0%, 74.9%, 87.8%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,728,095

CSS custom property--colour: #FF401F;

Brightness & contrast

Relative luminance0.25026WCAG 2.x, 0 is black and 1 is white

Perceived brightness148.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.01:1

Contrast with white3.5:1WCAG normal text: Fail

Contrast with black6.01:1WCAG normal text: AA

Greyscale equivalent#666666

Inverted#00BFE0

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#7D6E16no red cones; affects about 1% of men; ΔE 75.5 from the original

Deuteranopia#AB980Cno green cones; the most common form, about 1% of men; ΔE 75.9 from the original

Tritanopia#FF003Bno blue cones; rare, and affects men and women equally; ΔE 20.7 from the original

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

Contrast with white, large text3.5:1WCAG large text: AA

Contrast with black, large text6.01:1WCAG large text: AAA

Named colours

Orange red · ΔE 8.8 Red · ΔE 13 Tomato · ΔE 19 Crimson · ΔE 28.7 Coral · ΔE 29.4 Firebrick · ΔE 32.1

Nearest named CSS colourOrange red (#FF4500)ΔE 8.76, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1FDEFF

Analogous#FF1F6E, #FFB01F

Triadic#1FFF40, #401FFF

Split complementary#1FFFB0, #1F6EFF

Tetradic#6EFF1F, #1FDEFF, #B01FFF

Tints, shades & saturation

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

Lighter +40%#FFEEEB

Lighter +30%#FFC2B8

Lighter +20%#FF9785

Lighter +10%#FF6B52

Darker −10%#EB2300

Darker −20%#B81B00

Darker −30%#851400

Darker −40%#520C00

More saturated +25%#FF401F

Less saturated −25%#E3543B

Channel breakdown

R255

G64

B31

Red255 (100%)

Green64 (25.1%)

Blue31 (12.2%)

Hue8.84°

Saturation (HSL)100%

Lightness56.08%

Dominant channelRed

Hex per channelR FF · G 40 · B 1F

Keep nerding

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

#FF401F

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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