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Colour

#304D6A

  • #304D6A
  • Blue
  • Dark
  • Nearest: Dark slate grey

#304D6A is a blue with RGB values 48, 77, 106 and HSL 210°, 38%, 30%. It is a dark colour, so white text on it reaches 8.8:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#304D6A#304D6A
HEX#304D6A
RGBrgb(48, 77, 106)
RGB (0–1)0.1882, 0.302, 0.4157
RGB percentages18.8%, 30.2%, 41.6%
HSLhsl(210, 37.7%, 30.2%)
HSV / HSBhsv(210, 54.7%, 41.6%)
CMYK54.7%, 27.4%, 0%, 58.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,165,546
CSS custom property--colour: #304D6A;

Brightness & contrast

Relative luminance0.06977WCAG 2.x, 0 is black and 1 is white
Perceived brightness73.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.77:1
Contrast with white8.77:1WCAG normal text: AAA
Contrast with black2.4:1WCAG normal text: Fail
Greyscale equivalent#494949
Inverted#CFB295

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#414E6Bno red cones; affects about 1% of men; ΔE 5.1 from the original
Deuteranopia#3A4869no green cones; the most common form, about 1% of men; ΔE 5.8 from the original
Tritanopia#115457no blue cones; rare, and affects men and women equally; ΔE 21.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.77:1WCAG large text: AAA
Contrast with black, large text2.4:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 19.3Slate grey · ΔE 23.2Dim grey · ΔE 23.8Steel blue · ΔE 24.1Light slate grey · ΔE 25.8Gray · ΔE 29.7
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 19.26, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6A4D30
Analogous#306A6A, #30306A
Triadic#6A304D, #4D6A30
Split complementary#6A3030, #6A6A30
Tetradic#6A306A, #6A4D30, #306A30

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#96B3D0
Lighter +30%#739AC0
Lighter +20%#5080B0
Lighter +10%#40678D
Darker −10%#203447
Darker −20%#101A24
Darker −30%#000101
Darker −40%#000000
More saturated +25%#1D4D7D
Less saturated −25%#434D57

Channel breakdown

R48
G77
B106
Red48 (18.8%)
Green77 (30.2%)
Blue106 (41.6%)
Hue210°
Saturation (HSL)37.66%
Lightness30.2%
Dominant channelBlue
Hex per channelR 30 · G 4D · B 6A

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Every value on this page was computed from “304d6a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.