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Colour

#30508A

  • #30508A
  • Blue
  • Dark
  • Nearest: Dark slateblue

#30508A is a blue with RGB values 48, 80, 138 and HSL 219°, 48%, 36%. It is a dark colour, so white text on it reaches 8:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#30508A#30508A
HEX#30508A
RGBrgb(48, 80, 138)
RGB (0–1)0.1882, 0.3137, 0.5412
RGB percentages18.8%, 31.4%, 54.1%
HSLhsl(218.7, 48.4%, 36.5%)
HSV / HSBhsv(218.7, 65.2%, 54.1%)
CMYK65.2%, 42%, 0%, 45.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,166,346
CSS custom property--colour: #30508A;

Brightness & contrast

Relative luminance0.08201WCAG 2.x, 0 is black and 1 is white
Perceived brightness81.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.95:1
Contrast with white7.95:1WCAG normal text: AAA
Contrast with black2.64:1WCAG normal text: Fail
Greyscale equivalent#4D4D4D
Inverted#CFAF75

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#36558Cno red cones; affects about 1% of men; ΔE 3 from the original
Deuteranopia#294D89no green cones; the most common form, about 1% of men; ΔE 2 from the original
Tritanopia#005D66no blue cones; rare, and affects men and women equally; ΔE 36.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text7.95:1WCAG large text: AAA
Contrast with black, large text2.64:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 19.5Steel blue · ΔE 22Cornflower blue · ΔE 30.7Slate grey · ΔE 32.9Midnight blue · ΔE 33.2Light slate grey · ΔE 34.3
Nearest named CSS colourDark slateblue (#483D8B)ΔE 19.54, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8A6A30
Analogous#307D8A, #3D308A
Triadic#8A3050, #508A30
Split complementary#8A3D30, #7D8A30
Tetradic#8A307D, #8A6A30, #308A3D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A6BBE0
Lighter +30%#809ED3
Lighter +20%#5A80C6
Lighter +10%#3D66B0
Darker −10%#233A64
Darker −20%#16243E
Darker −30%#090E18
Darker −40%#000000
More saturated +25%#1949A1
Less saturated −25%#475773

Channel breakdown

R48
G80
B138
Red48 (18.8%)
Green80 (31.4%)
Blue138 (54.1%)
Hue218.67°
Saturation (HSL)48.39%
Lightness36.47%
Dominant channelBlue
Hex per channelR 30 · G 50 · B 8A

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Every value on this page was computed from “30508a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.