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Recognised as Colour

#05397B

  • #05397B
  • Blue
  • Dark
  • Nearest: Dark slateblue

#05397B is a blue with RGB values 5, 57, 123 and HSL 214°, 92%, 25%. It is a dark colour, so white text on it reaches 11.2:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#05397B#05397B
HEX#05397B
RGBrgb(5, 57, 123)
RGB (0–1)0.0196, 0.2235, 0.4824
RGB percentages2%, 22.4%, 48.2%
HSLhsl(213.6, 92.2%, 25.1%)
HSV / HSBhsv(213.6, 95.9%, 48.2%)
CMYK95.9%, 53.7%, 0%, 51.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer342,395
CSS custom property--colour: #05397B;

Brightness & contrast

Relative luminance0.04389WCAG 2.x, 0 is black and 1 is white
Perceived brightness60.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.18:1
Contrast with white11.18:1WCAG normal text: AAA
Contrast with black1.88:1WCAG normal text: Fail
Greyscale equivalent#333333
Inverted#FAC684

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#09407Dno red cones; affects about 1% of men; ΔE 5.2 from the original
Deuteranopia#00367Ano green cones; the most common form, about 1% of men; ΔE 2.1 from the original
Tritanopia#004954no blue cones; rare, and affects men and women equally; ΔE 40.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text11.18:1WCAG large text: AAA
Contrast with black, large text1.88:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 15Midnight blue · ΔE 22.8Rebecca purple · ΔE 32.1Steel blue · ΔE 33.4Slate blue · ΔE 35.2Royal blue · ΔE 35.7
Nearest named CSS colourDark slateblue (#483D8B)ΔE 15.04, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7B4705
Analogous#05747B, #0C057B
Triadic#7B0539, #397B05
Split complementary#7B0C05, #747B05
Tetradic#7B0574, #7B4705, #057B0C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#549CF8
Lighter +30%#2380F6
Lighter +20%#0966DD
Lighter +10%#0750AC
Darker −10%#03224A
Darker −20%#010C19
Darker −30%#000000
Darker −40%#000000
More saturated +25%#003880
Less saturated −25%#153B6B

Channel breakdown

R5
G57
B123
Red5 (2%)
Green57 (22.4%)
Blue123 (48.2%)
Hue213.56°
Saturation (HSL)92.19%
Lightness25.1%
Dominant channelBlue
Hex per channelR 05 · G 39 · B 7B

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Every value on this page was computed from “05397b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.