Nerdulator> put something in

Colour

#1F0100

  • #1F0100
  • Red
  • Dark
  • Nearest: Black

#1F0100 is a red with RGB values 31, 1, 0 and HSL 2°, 100%, 6%. It is a dark colour, so white text on it reaches 19.8:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#1F0100#1F0100
HEX#1F0100
RGBrgb(31, 1, 0)
RGB (0–1)0.1216, 0.0039, 0
RGB percentages12.2%, 0.4%, 0%
HSLhsl(1.9, 100%, 6.1%)
HSV / HSBhsv(1.9, 100%, 12.2%)
CMYK0%, 96.8%, 100%, 87.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,031,872
CSS custom property--colour: #1F0100;

Brightness & contrast

Relative luminance0.00313WCAG 2.x, 0 is black and 1 is white
Perceived brightness17 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 19.76:1
Contrast with white19.76:1WCAG normal text: AAA
Contrast with black1.06:1WCAG normal text: Fail
Greyscale equivalent#070707
Inverted#E0FEFF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#080600no red cones; affects about 1% of men; ΔE 11.9 from the original
Deuteranopia#100D00no green cones; the most common form, about 1% of men; ΔE 12.3 from the original
Tritanopia#230001no blue cones; rare, and affects men and women equally; ΔE 3.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text19.76:1WCAG large text: AAA
Contrast with black, large text1.06:1WCAG large text: Fail

Named colours

Black · ΔE 12.6Dark slate grey · ΔE 37.5Dim grey · ΔE 43.3Gray · ΔE 52.2Saddle brown · ΔE 52.5Slate grey · ΔE 53.9
Nearest named CSS colourBlack (#000000)ΔE 12.56, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#001E1F
Analogous#1F000F, #1F1100
Triadic#001F01, #01001F
Split complementary#001F10, #000E1F
Tetradic#0F1F00, #001E1F, #11001F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#EB0800
Lighter +30%#B80600
Lighter +20%#850400
Lighter +10%#520300
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#1F0100
Less saturated −25%#1B0504

Channel breakdown

R31
G1
B0
Red31 (12.2%)
Green1 (0.4%)
Blue0 (0%)
Hue1.94°
Saturation (HSL)100%
Lightness6.08%
Dominant channelRed
Hex per channelR 1F · G 01 · B 00

Keep nerding

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

Nerdulate something else

Nothing in mind? Surprise me · today’s page

Every value on this page was computed from “1f0100” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.