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Colour

#2A17FF

  • #2A17FF
  • Blue
  • Dark
  • Nearest: Blue

#2A17FF is a blue with RGB values 42, 23, 255 and HSL 245°, 100%, 55%. It is a dark colour, so white text on it reaches 7.9:1 contrast (AAA for normal text). The nearest named colour is Blue.

Colour values

#2A17FF#2A17FF
HEX#2A17FF
RGBrgb(42, 23, 255)
RGB (0–1)0.1647, 0.0902, 1
RGB percentages16.5%, 9%, 100%
HSLhsl(244.9, 100%, 54.5%)
HSV / HSBhsv(244.9, 91%, 100%)
CMYK83.5%, 91%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,758,655
CSS custom property--colour: #2A17FF;

Brightness & contrast

Relative luminance0.08325WCAG 2.x, 0 is black and 1 is white
Perceived brightness90.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.88:1
Contrast with white7.88:1WCAG normal text: AAA
Contrast with black2.67:1WCAG normal text: Fail
Greyscale equivalent#2C2C2C
Inverted#D5E800

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#005DFFno red cones; affects about 1% of men; ΔE 40.8 from the original
Deuteranopia#0045FBno green cones; the most common form, about 1% of men; ΔE 24.9 from the original
Tritanopia#006D97no blue cones; rare, and affects men and women equally; ΔE 113.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.88:1WCAG large text: AAA
Contrast with black, large text2.67:1WCAG large text: Fail

Named colours

Blue · ΔE 5.8Medium blue · ΔE 17.9Blue violet · ΔE 30.7Dark violet · ΔE 33.9Dark orchid · ΔE 45.9Dark blue · ΔE 47.7
Nearest named CSS colourBlue (#0000FF)ΔE 5.83, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#ECFF17
Analogous#1778FF, #9E17FF
Triadic#FF2A17, #17FF2A
Split complementary#FF9E17, #78FF17
Tetradic#FF1778, #ECFF17, #17FF9E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E5E3FF
Lighter +30%#B6B0FF
Lighter +20%#887DFF
Lighter +10%#594AFF
Darker −10%#1300E3
Darker −20%#0E00B0
Darker −30%#0A007D
Darker −40%#06004A
More saturated +25%#2A17FF
Less saturated −25%#4234E2

Channel breakdown

R42
G23
B255
Red42 (16.5%)
Green23 (9%)
Blue255 (100%)
Hue244.91°
Saturation (HSL)100%
Lightness54.51%
Dominant channelBlue
Hex per channelR 2A · G 17 · B FF

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Every value on this page was computed from “2a17ff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.