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Recognised as Colour

#015599

  • #015599
  • Blue
  • Dark
  • Nearest: Dark slateblue

#015599 is a blue with RGB values 1, 85, 153 and HSL 207°, 99%, 30%. It is a dark colour, so white text on it reaches 7.6:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#015599#015599
HEX#015599
RGBrgb(1, 85, 153)
RGB (0–1)0.0039, 0.3333, 0.6
RGB percentages0.4%, 33.3%, 60%
HSLhsl(206.8, 98.7%, 30.2%)
HSV / HSBhsv(206.8, 99.3%, 60%)
CMYK99.3%, 44.4%, 0%, 40%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer87,449
CSS custom property--colour: #015599;

Brightness & contrast

Relative luminance0.08803WCAG 2.x, 0 is black and 1 is white
Perceived brightness83.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.61:1
Contrast with white7.61:1WCAG normal text: AAA
Contrast with black2.76:1WCAG normal text: Fail
Greyscale equivalent#484848
Inverted#FEAA66

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#315A9Cno red cones; affects about 1% of men; ΔE 4.9 from the original
Deuteranopia#114E98no green cones; the most common form, about 1% of men; ΔE 6.1 from the original
Tritanopia#00666Fno blue cones; rare, and affects men and women equally; ΔE 41.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.61:1WCAG large text: AAA
Contrast with black, large text2.76:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 21.1Steel blue · ΔE 22.3Cornflower blue · ΔE 27.3Dodgerblue · ΔE 31.6Royal blue · ΔE 32.7Midnight blue · ΔE 33.4
Nearest named CSS colourDark slateblue (#483D8B)ΔE 21.07, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#994501
Analogous#019991, #010999
Triadic#990155, #559901
Split complementary#990109, #999101
Tetradic#910199, #994501, #099901

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#68BBFE
Lighter +30%#35A4FE
Lighter +20%#038DFD
Lighter +10%#0171CC
Darker −10%#013966
Darker −20%#001D34
Darker −30%#000101
Darker −40%#000000
More saturated +25%#00559A
Less saturated −25%#145386

Channel breakdown

R1
G85
B153
Red1 (0.4%)
Green85 (33.3%)
Blue153 (60%)
Hue206.84°
Saturation (HSL)98.7%
Lightness30.2%
Dominant channelBlue
Hex per channelR 01 · G 55 · B 99

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Every value on this page was computed from “hex 015599” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.