Recognised as Colour

#FF251A

#FF251A
Red
Dark
Nearest: Red

#FF251A is a red with RGB values 255, 37, 26 and HSL 3°, 100%, 55%. It is a dark colour, so black text on it reaches 5.5:1 contrast (AA for normal text). The nearest named colour is Red.

Colour values

#FF251A#FF251A

HEX#FF251A

RGBrgb(255, 37, 26)

RGB (0–1)1, 0.1451, 0.102

RGB percentages100%, 14.5%, 10.2%

HSLhsl(2.9, 100%, 55.1%)

HSV / HSBhsv(2.9, 89.8%, 100%)

CMYK0%, 85.5%, 89.8%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,721,178

CSS custom property--colour: #FF251A;

Brightness & contrast

Relative luminance0.22658WCAG 2.x, 0 is black and 1 is white

Perceived brightness142.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.53:1

Contrast with white3.8:1WCAG normal text: Fail

Contrast with black5.53:1WCAG normal text: AA

Greyscale equivalent#535353

Inverted#00DAE5

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#726512no red cones; affects about 1% of men; ΔE 82.8 from the original

Deuteranopia#A69300no green cones; the most common form, about 1% of men; ΔE 82.2 from the original

Tritanopia#FF0027no blue cones; rare, and affects men and women equally; ΔE 8 from the original

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

Contrast with white, large text3.8:1WCAG large text: AA

Contrast with black, large text5.53:1WCAG large text: AAA

Named colours

Red · ΔE 7.7 Orange red · ΔE 12.2 Tomato · ΔE 24.4 Crimson · ΔE 28.6 Firebrick · ΔE 34.4 Coral · ΔE 35.9

Nearest named CSS colourRed (#FF0000)ΔE 7.74, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1AF4FF

Analogous#FF1A81, #FF981A

Triadic#1AFF25, #251AFF

Split complementary#1AFF98, #1A81FF

Tetradic#81FF1A, #1AF4FF, #981AFF

Tints, shades & saturation

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

Lighter +40%#FFE7E6

Lighter +30%#FFB7B3

Lighter +20%#FF8680

Lighter +10%#FF564D

Darker −10%#E60B00

Darker −20%#B30900

Darker −30%#800600

Darker −40%#4D0400

More saturated +25%#FF251A

Less saturated −25%#E23F37

Channel breakdown

R255

G37

B26

Red255 (100%)

Green37 (14.5%)

Blue26 (10.2%)

Hue2.88°

Saturation (HSL)100%

Lightness55.1%

Dominant channelRed

Hex per channelR FF · G 25 · B 1A

Keep nerding

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

#FF251A

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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