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Colour

#30303C

  • #30303C
  • Blue
  • Dark
  • Nearest: Dark slate grey

#30303C is a blue with RGB values 48, 48, 60 and HSL 240°, 11%, 21%. It is a dark colour, so white text on it reaches 13:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#30303C#30303C
HEX#30303C
RGBrgb(48, 48, 60)
RGB (0–1)0.1882, 0.1882, 0.2353
RGB percentages18.8%, 18.8%, 23.5%
HSLhsl(240, 11.1%, 21.2%)
HSV / HSBhsv(240, 20%, 23.5%)
CMYK20%, 20%, 0%, 76.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,158,076
CSS custom property--colour: #30303C;

Brightness & contrast

Relative luminance0.03069WCAG 2.x, 0 is black and 1 is white
Perceived brightness49.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.01:1
Contrast with white13.01:1WCAG normal text: AAA
Contrast with black1.61:1WCAG normal text: Fail
Greyscale equivalent#313131
Inverted#CFCFC3

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2D313Dno red cones; affects about 1% of men; ΔE 1.7 from the original
Deuteranopia#2D313Cno green cones; the most common form, about 1% of men; ΔE 1.9 from the original
Tritanopia#2D3234no blue cones; rare, and affects men and women equally; ΔE 7.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.01:1WCAG large text: AAA
Contrast with black, large text1.61:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 18.8Black · ΔE 21.9Dim grey · ΔE 25.4Slate grey · ΔE 33.1Gray · ΔE 34.3Light slate grey · ΔE 36.2
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 18.79, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#3C3C30
Analogous#30363C, #36303C
Triadic#3C3030, #303C30
Split complementary#3C3630, #363C30
Tetradic#3C3036, #3C3C30, #303C36

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9191A7
Lighter +30%#757590
Lighter +20%#5D5D75
Lighter +10%#474758
Darker −10%#191920
Darker −20%#030303
Darker −30%#000000
Darker −40%#000000
More saturated +25%#23234A
Less saturated −25%#363636

Channel breakdown

R48
G48
B60
Red48 (18.8%)
Green48 (18.8%)
Blue60 (23.5%)
Hue240°
Saturation (HSL)11.11%
Lightness21.18%
Dominant channelBlue
Hex per channelR 30 · G 30 · B 3C

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Every value on this page was computed from “30303c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.