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Recognised as Colour

#30309A

  • #30309A
  • Blue
  • Dark
  • Nearest: Midnight blue

#30309A is a blue with RGB values 48, 48, 154 and HSL 240°, 52%, 40%. It is a dark colour, so white text on it reaches 10.4:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#30309A#30309A
HEX#30309A
RGBrgb(48, 48, 154)
RGB (0–1)0.1882, 0.1882, 0.6039
RGB percentages18.8%, 18.8%, 60.4%
HSLhsl(240, 52.5%, 39.6%)
HSV / HSBhsv(240, 68.8%, 60.4%)
CMYK68.8%, 68.8%, 0%, 39.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,158,170
CSS custom property--colour: #30309A;

Brightness & contrast

Relative luminance0.05075WCAG 2.x, 0 is black and 1 is white
Perceived brightness68.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.42:1
Contrast with white10.42:1WCAG normal text: AAA
Contrast with black2.02:1WCAG normal text: Fail
Greyscale equivalent#383838
Inverted#CFCF65

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00459Dno red cones; affects about 1% of men; ΔE 18.1 from the original
Deuteranopia#003B98no green cones; the most common form, about 1% of men; ΔE 12.4 from the original
Tritanopia#004C61no blue cones; rare, and affects men and women equally; ΔE 61.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.42:1WCAG large text: AAA
Contrast with black, large text2.02:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 14.1Rebecca purple · ΔE 14.5Dark slateblue · ΔE 18.4Slate blue · ΔE 18.4Indigo · ΔE 18.4Navy · ΔE 20
Nearest named CSS colourMidnight blue (#191970)ΔE 14.13, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#9A9A30
Analogous#30659A, #65309A
Triadic#9A3030, #309A30
Split complementary#9A6530, #659A30
Tetradic#9A3065, #9A9A30, #309A65

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B0B0E6
Lighter +30%#8989DA
Lighter +20%#6262CE
Lighter +10%#3C3CC1
Darker −10%#242473
Darker −20%#18184C
Darker −30%#0C0C25
Darker −40%#000000
More saturated +25%#1717B3
Less saturated −25%#494981

Channel breakdown

R48
G48
B154
Red48 (18.8%)
Green48 (18.8%)
Blue154 (60.4%)
Hue240°
Saturation (HSL)52.48%
Lightness39.61%
Dominant channelBlue
Hex per channelR 30 · G 30 · B 9A

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Every value on this page was computed from “30309a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.