Recognised as Colour

#FF0B39

#FF0B39
Red
Dark
Nearest: Crimson

#FF0B39 is a red with RGB values 255, 11, 57 and HSL 349°, 100%, 52%. 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

#FF0B39#FF0B39

HEX#FF0B39

RGBrgb(255, 11, 57)

RGB (0–1)1, 0.0431, 0.2235

RGB percentages100%, 4.3%, 22.4%

HSLhsl(348.7, 100%, 52.2%)

HSV / HSBhsv(348.7, 95.7%, 100%)

CMYK0%, 95.7%, 77.6%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,714,553

CSS custom property--colour: #FF0B39;

Brightness & contrast

Relative luminance0.21795WCAG 2.x, 0 is black and 1 is white

Perceived brightness141 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.36:1

Contrast with white3.92:1WCAG normal text: Fail

Contrast with black5.36:1WCAG normal text: AA

Greyscale equivalent#424242

Inverted#00F4C6

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6B6238no red cones; affects about 1% of men; ΔE 86.3 from the original

Deuteranopia#A2912Fno green cones; the most common form, about 1% of men; ΔE 85.7 from the original

Tritanopia#FF0026no blue cones; rare, and affects men and women equally; ΔE 9.6 from the original

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

Contrast with white, large text3.92:1WCAG large text: AA

Contrast with black, large text5.36:1WCAG large text: AAA

Named colours

Crimson · ΔE 16.1 Red · ΔE 22.4 Tomato · ΔE 23.9 Orange red · ΔE 27.4 Firebrick · ΔE 29.3 Brown · ΔE 37.4

Nearest named CSS colourCrimson (#DC143C)ΔE 16.1, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0BFFD1

Analogous#FF0BB3, #FF570B

Triadic#39FF0B, #0B39FF

Split complementary#0BFF57, #0BB3FF

Tetradic#B3FF0B, #0BFFD1, #570BFF

Tints, shades & saturation

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

Lighter +40%#FFD7DF

Lighter +30%#FFA4B5

Lighter +20%#FF718C

Lighter +10%#FF3E62

Darker −10%#D70029

Darker −20%#A4001F

Darker −30%#710015

Darker −40%#3E000C

More saturated +25%#FF0B39

Less saturated −25%#E1294C

Channel breakdown

R255

G11

B57

Red255 (100%)

Green11 (4.3%)

Blue57 (22.4%)

Hue348.69°

Saturation (HSL)100%

Lightness52.16%

Dominant channelRed

Hex per channelR FF · G 0B · B 39

Keep nerding

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

#FF0B39

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