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Recognised as Colour

#2A00DB

  • #2A00DB
  • Blue
  • Dark
  • Nearest: Medium blue

#2A00DB is a blue with RGB values 42, 0, 219 and HSL 252°, 100%, 43%. It is a dark colour, so white text on it reaches 9.9:1 contrast (AAA for normal text). The nearest named colour is Medium blue.

Colour values

#2A00DB#2A00DB
HEX#2A00DB
RGBrgb(42, 0, 219)
RGB (0–1)0.1647, 0, 0.8588
RGB percentages16.5%, 0%, 85.9%
HSLhsl(251.5, 100%, 42.9%)
HSV / HSBhsv(251.5, 100%, 85.9%)
CMYK80.8%, 100%, 0%, 14.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,752,731
CSS custom property--colour: #2A00DB;

Brightness & contrast

Relative luminance0.05607WCAG 2.x, 0 is black and 1 is white
Perceived brightness77.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.9:1
Contrast with white9.9:1WCAG normal text: AAA
Contrast with black2.12:1WCAG normal text: Fail
Greyscale equivalent#191919
Inverted#D5FF24

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004CE0no red cones; affects about 1% of men; ΔE 35.7 from the original
Deuteranopia#0038D8no green cones; the most common form, about 1% of men; ΔE 24.5 from the original
Tritanopia#005A80no blue cones; rare, and affects men and women equally; ΔE 103.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.9:1WCAG large text: AAA
Contrast with black, large text2.12:1WCAG large text: Fail

Named colours

Medium blue · ΔE 5.7Blue · ΔE 16.6Blue violet · ΔE 23.6Dark violet · ΔE 26.6Dark blue · ΔE 35.3Dark orchid · ΔE 37.4
Nearest named CSS colourMedium blue (#0000CD)ΔE 5.68, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B1DB00
Analogous#0043DB, #9700DB
Triadic#DB2A00, #00DB2A
Split complementary#DB9800, #43DB00
Tetradic#DB0044, #B1DB00, #00DB98

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B9A8FF
Lighter +30%#8F75FF
Lighter +20%#6642FF
Lighter +10%#3D0FFF
Darker −10%#2000A8
Darker −20%#160075
Darker −30%#0D0042
Darker −40%#03000F
More saturated +25%#2A00DB
Less saturated −25%#3B1BC0

Channel breakdown

R42
G0
B219
Red42 (16.5%)
Green0 (0%)
Blue219 (85.9%)
Hue251.51°
Saturation (HSL)100%
Lightness42.94%
Dominant channelBlue
Hex per channelR 2A · G 00 · B DB

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Every value on this page was computed from “2a00db” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.