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Colour

#646AFE

  • #646AFE
  • Blue
  • Dark
  • Nearest: Medium slateblue

#646AFE is a blue with RGB values 100, 106, 254 and HSL 238°, 99%, 69%. It is a dark colour, so black text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Medium slateblue.

Colour values

#646AFE#646AFE
HEX#646AFE
RGBrgb(100, 106, 254)
RGB (0–1)0.3922, 0.4157, 0.9961
RGB percentages39.2%, 41.6%, 99.6%
HSLhsl(237.7, 98.7%, 69.4%)
HSV / HSBhsv(237.7, 60.6%, 99.6%)
CMYK60.6%, 58.3%, 0%, 0.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,580,990
CSS custom property--colour: #646AFE;

Brightness & contrast

Relative luminance0.20173WCAG 2.x, 0 is black and 1 is white
Perceived brightness130.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.03:1
Contrast with white4.17:1WCAG normal text: Fail
Contrast with black5.03:1WCAG normal text: AA
Greyscale equivalent#737373
Inverted#9B9501

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0083FFno red cones; affects about 1% of men; ΔE 24.5 from the original
Deuteranopia#0076FBno green cones; the most common form, about 1% of men; ΔE 17.1 from the original
Tritanopia#008EAAno blue cones; rare, and affects men and women equally; ΔE 80.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.17:1WCAG large text: AA
Contrast with black, large text5.03:1WCAG large text: AAA

Named colours

Medium slateblue · ΔE 9.2Royal blue · ΔE 17.6Slate blue · ΔE 18.7Medium purple · ΔE 25Dark orchid · ΔE 29.8Blue violet · ΔE 30.8
Nearest named CSS colourMedium slateblue (#7B68EE)ΔE 9.2, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FEF864
Analogous#64B7FE, #AB64FE
Triadic#FE646A, #6AFE64
Split complementary#FEAB64, #B7FE64
Tetradic#FE64B7, #FEF864, #64FEAB

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#FCFCFF
Lighter +20%#C9CBFF
Lighter +10%#979BFE
Darker −10%#3139FE
Darker −20%#020BFA
Darker −30%#0109C8
Darker −40%#010795
More saturated +25%#6369FF
Less saturated −25%#777CEB

Channel breakdown

R100
G106
B254
Red100 (39.2%)
Green106 (41.6%)
Blue254 (99.6%)
Hue237.66°
Saturation (HSL)98.72%
Lightness69.41%
Dominant channelBlue
Hex per channelR 64 · G 6A · B FE

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Every value on this page was computed from “646afe” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.