Colour

#90001F

#90001F
Red
Dark
Nearest: Brown

#90001F is a red with RGB values 144, 0, 31 and HSL 347°, 100%, 28%. It is a dark colour, so white text on it reaches 9.5:1 contrast (AAA for normal text). The nearest named colour is Brown.

Colour values

#90001F#90001F

HEX#90001F

RGBrgb(144, 0, 31)

RGB (0–1)0.5647, 0, 0.1216

RGB percentages56.5%, 0%, 12.2%

HSLhsl(347.1, 100%, 28.2%)

HSV / HSBhsv(347.1, 100%, 56.5%)

CMYK0%, 100%, 78.5%, 43.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer9,437,215

CSS custom property--colour: #90001F;

Brightness & contrast

Relative luminance0.06028WCAG 2.x, 0 is black and 1 is white

Perceived brightness79.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 9.52:1

Contrast with white9.52:1WCAG normal text: AAA

Contrast with black2.21:1WCAG normal text: Fail

Greyscale equivalent#212121

Inverted#6FFFE0

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#38331Eno red cones; affects about 1% of men; ΔE 56.7 from the original

Deuteranopia#594F19no green cones; the most common form, about 1% of men; ΔE 56.4 from the original

Tritanopia#9F0011no blue cones; rare, and affects men and women equally; ΔE 13.3 from the original

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

Contrast with white, large text9.52:1WCAG large text: AAA

Contrast with black, large text2.21:1WCAG large text: Fail

Named colours

Brown · ΔE 9.4 Maroon · ΔE 12.7 Dark red · ΔE 14.4 Firebrick · ΔE 14.6 Indian red · ΔE 25.8 Crimson · ΔE 25.9

Nearest named CSS colourBrown (#A52A2A)ΔE 9.36, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#009071

Analogous#900067, #902900

Triadic#1F9000, #001F90

Split complementary#009029, #006790

Tetradic#679000, #009071, #290090

Tints, shades & saturation

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

Lighter +40%#FF5D80

Lighter +30%#FF2A58

Lighter +20%#F60035

Lighter +10%#C3002A

Darker −10%#5D0014

Darker −20%#2A0009

Darker −30%#000000

Darker −40%#000000

More saturated +25%#90001F

Less saturated −25%#7E1229

Channel breakdown

R144

B31

Red144 (56.5%)

Green0 (0%)

Blue31 (12.2%)

Hue347.08°

Saturation (HSL)100%

Lightness28.24%

Dominant channelRed

Hex per channelR 90 · G 00 · B 1F

Keep nerding

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

#90001F

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