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Recognised as Colour

#30508F

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

#30508F is a blue with RGB values 48, 80, 143 and HSL 220°, 50%, 37%. It is a dark colour, so white text on it reaches 7.9:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#30508F#30508F
HEX#30508F
RGBrgb(48, 80, 143)
RGB (0–1)0.1882, 0.3137, 0.5608
RGB percentages18.8%, 31.4%, 56.1%
HSLhsl(219.8, 49.7%, 37.5%)
HSV / HSBhsv(219.8, 66.4%, 56.1%)
CMYK66.4%, 44.1%, 0%, 43.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,166,351
CSS custom property--colour: #30508F;

Brightness & contrast

Relative luminance0.08349WCAG 2.x, 0 is black and 1 is white
Perceived brightness82.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.87:1
Contrast with white7.87:1WCAG normal text: AAA
Contrast with black2.67:1WCAG normal text: Fail
Greyscale equivalent#4E4E4E
Inverted#CFAF70

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#335691no red cones; affects about 1% of men; ΔE 3.9 from the original
Deuteranopia#244E8Eno green cones; the most common form, about 1% of men; ΔE 2.1 from the original
Tritanopia#005E68no blue cones; rare, and affects men and women equally; ΔE 39.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text7.87:1WCAG large text: AAA
Contrast with black, large text2.67:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 17.2Steel blue · ΔE 23.4Cornflower blue · ΔE 29.3Midnight blue · ΔE 31Royal blue · ΔE 34.1Rebecca purple · ΔE 34.3
Nearest named CSS colourDark slateblue (#483D8B)ΔE 17.16, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8F6F30
Analogous#30808F, #3F308F
Triadic#8F3050, #508F30
Split complementary#8F3F30, #808F30
Tetradic#8F3080, #8F6F30, #308F3F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A9BCE2
Lighter +30%#839FD5
Lighter +20%#5D81C8
Lighter +10%#3D65B5
Darker −10%#233B69
Darker −20%#162543
Darker −30%#0A101C
Darker −40%#000000
More saturated +25%#1848A7
Less saturated −25%#485877

Channel breakdown

R48
G80
B143
Red48 (18.8%)
Green80 (31.4%)
Blue143 (56.1%)
Hue219.79°
Saturation (HSL)49.74%
Lightness37.45%
Dominant channelBlue
Hex per channelR 30 · G 50 · B 8F

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