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Recognised as Colour

#015DB4

  • #015DB4
  • Blue
  • Dark
  • Nearest: Dark slateblue

#015DB4 is a blue with RGB values 1, 93, 180 and HSL 209°, 99%, 35%. It is a dark colour, so white text on it reaches 6.5:1 contrast (AA for normal text). The nearest named colour is Dark slateblue.

Colour values

#015DB4#015DB4
HEX#015DB4
RGBrgb(1, 93, 180)
RGB (0–1)0.0039, 0.3647, 0.7059
RGB percentages0.4%, 36.5%, 70.6%
HSLhsl(209.2, 98.9%, 35.5%)
HSV / HSBhsv(209.2, 99.4%, 70.6%)
CMYK99.4%, 48.3%, 0%, 29.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer89,524
CSS custom property--colour: #015DB4;

Brightness & contrast

Relative luminance0.1113WCAG 2.x, 0 is black and 1 is white
Perceived brightness93.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.51:1
Contrast with white6.51:1WCAG normal text: AA
Contrast with black3.23:1WCAG normal text: Fail
Greyscale equivalent#505050
Inverted#FEA24B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2965B7no red cones; affects about 1% of men; ΔE 5 from the original
Deuteranopia#0057B2no green cones; the most common form, about 1% of men; ΔE 4.1 from the original
Tritanopia#007280no blue cones; rare, and affects men and women equally; ΔE 49.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.51:1WCAG large text: AAA
Contrast with black, large text3.23:1WCAG large text: AA

Named colours

Dark slateblue · ΔE 20Royal blue · ΔE 21.2Cornflower blue · ΔE 22.4Dodgerblue · ΔE 22.5Slate blue · ΔE 25.8Steel blue · ΔE 28.5
Nearest named CSS colourDark slateblue (#483D8B)ΔE 20.01, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B45801
Analogous#01B4B1, #0104B4
Triadic#B4015D, #5DB401
Split complementary#B40104, #B4B101
Tetradic#B101B4, #B45801, #04B401

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#83C2FE
Lighter +30%#50A9FE
Lighter +20%#1D91FE
Lighter +10%#0177E7
Darker −10%#014381
Darker −20%#00294F
Darker −30%#000E1C
Darker −40%#000000
More saturated +25%#005DB5
Less saturated −25%#185C9D

Channel breakdown

R1
G93
B180
Red1 (0.4%)
Green93 (36.5%)
Blue180 (70.6%)
Hue209.16°
Saturation (HSL)98.9%
Lightness35.49%
Dominant channelBlue
Hex per channelR 01 · G 5D · B B4

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Every value on this page was computed from “015db4” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.