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Colour

#304EAD

  • #304EAD
  • Blue
  • Dark
  • Nearest: Dark slateblue

#304EAD is a blue with RGB values 48, 78, 173 and HSL 226°, 57%, 43%. It is a dark colour, so white text on it reaches 7.4:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#304EAD#304EAD
HEX#304EAD
RGBrgb(48, 78, 173)
RGB (0–1)0.1882, 0.3059, 0.6784
RGB percentages18.8%, 30.6%, 67.8%
HSLhsl(225.6, 56.6%, 43.3%)
HSV / HSBhsv(225.6, 72.3%, 67.8%)
CMYK72.3%, 54.9%, 0%, 32.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,165,869
CSS custom property--colour: #304EAD;

Brightness & contrast

Relative luminance0.09094WCAG 2.x, 0 is black and 1 is white
Perceived brightness87.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.45:1
Contrast with white7.45:1WCAG normal text: AAA
Contrast with black2.82:1WCAG normal text: Fail
Greyscale equivalent#4E4E4E
Inverted#CFB152

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#005BB0no red cones; affects about 1% of men; ΔE 11.9 from the original
Deuteranopia#0050ABno green cones; the most common form, about 1% of men; ΔE 6 from the original
Tritanopia#006576no blue cones; rare, and affects men and women equally; ΔE 55.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.45:1WCAG large text: AAA
Contrast with black, large text2.82:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 13.7Royal blue · ΔE 16.6Slate blue · ΔE 16.9Rebecca purple · ΔE 21.9Midnight blue · ΔE 22.8Medium purple · ΔE 24.1
Nearest named CSS colourDark slateblue (#483D8B)ΔE 13.67, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AD8F30
Analogous#308CAD, #5130AD
Triadic#AD304E, #4EAD30
Split complementary#AD5130, #8CAD30
Tetradic#AD308C, #AD8F30, #30AD51

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BCC8ED
Lighter +30%#95A7E1
Lighter +20%#6D86D6
Lighter +10%#4565CB
Darker −10%#253C85
Darker −20%#1A2A5D
Darker −30%#0F1835
Darker −40%#04060D
More saturated +25%#1440C9
Less saturated −25%#4C5C91

Channel breakdown

R48
G78
B173
Red48 (18.8%)
Green78 (30.6%)
Blue173 (67.8%)
Hue225.6°
Saturation (HSL)56.56%
Lightness43.33%
Dominant channelBlue
Hex per channelR 30 · G 4E · B AD

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