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Recognised as Colour

#400A3F

  • #400A3F
  • Magenta
  • Dark
  • Nearest: Dark slateblue

#400A3F is a magenta with RGB values 64, 10, 63 and HSL 301°, 73%, 15%. It is a dark colour, so white text on it reaches 15.8:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#400A3F#400A3F
HEX#400A3F
RGBrgb(64, 10, 63)
RGB (0–1)0.251, 0.0392, 0.2471
RGB percentages25.1%, 3.9%, 24.7%
HSLhsl(301.1, 73%, 14.5%)
HSV / HSBhsv(301.1, 84.4%, 25.1%)
CMYK0%, 84.4%, 1.6%, 74.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,196,927
CSS custom property--colour: #400A3F;

Brightness & contrast

Relative luminance0.01666WCAG 2.x, 0 is black and 1 is white
Perceived brightness41.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 15.75:1
Contrast with white15.75:1WCAG normal text: AAA
Contrast with black1.33:1WCAG normal text: Fail
Greyscale equivalent#191919
Inverted#BFF5C0

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#031E40no red cones; affects about 1% of men; ΔE 27.6 from the original
Deuteranopia#1A253Eno green cones; the most common form, about 1% of men; ΔE 28.7 from the original
Tritanopia#421224no blue cones; rare, and affects men and women equally; ΔE 21.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text15.75:1WCAG large text: AAA
Contrast with black, large text1.33:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 28.8Midnight blue · ΔE 29.8Rebecca purple · ΔE 35Purple · ΔE 35.2Indigo · ΔE 39.2Dark magenta · ΔE 40.3
Nearest named CSS colourDark slateblue (#483D8B)ΔE 28.81, a distinctly different colour
Hue familymagenta
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#0A400B
Analogous#260A40, #400A24
Triadic#3F400A, #0A3F40
Split complementary#24400A, #0A4026
Tetradic#40260A, #0A400B, #0A2440

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E036DD
Lighter +30%#C41FC1
Lighter +20%#981896
Lighter +10%#6C116A
Darker −10%#140314
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#490148
Less saturated −25%#371336

Channel breakdown

R64
G10
B63
Red64 (25.1%)
Green10 (3.9%)
Blue63 (24.7%)
Hue301.11°
Saturation (HSL)72.97%
Lightness14.51%
Dominant channelRed
Hex per channelR 40 · G 0A · B 3F

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Every value on this page was computed from “400a3f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.