Nerdulator> put something in

Recognised as Colour

#307BD9

  • #307BD9
  • Blue
  • Dark
  • Nearest: Cornflower blue

#307BD9 is a blue with RGB values 48, 123, 217 and HSL 213°, 69%, 52%. It is a dark colour, so black text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#307BD9#307BD9
HEX#307BD9
RGBrgb(48, 123, 217)
RGB (0–1)0.1882, 0.4824, 0.851
RGB percentages18.8%, 48.2%, 85.1%
HSLhsl(213.4, 69%, 52%)
HSV / HSBhsv(213.4, 77.9%, 85.1%)
CMYK77.9%, 43.3%, 0%, 14.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,177,433
CSS custom property--colour: #307BD9;

Brightness & contrast

Relative luminance0.19804WCAG 2.x, 0 is black and 1 is white
Perceived brightness122.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.96:1
Contrast with white4.23:1WCAG normal text: Fail
Contrast with black4.96:1WCAG normal text: AA
Greyscale equivalent#727272
Inverted#CF8426

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#4B83DDno red cones; affects about 1% of men; ΔE 4.7 from the original
Deuteranopia#2A74D7no green cones; the most common form, about 1% of men; ΔE 4.5 from the original
Tritanopia#00919Fno blue cones; rare, and affects men and women equally; ΔE 53.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.23:1WCAG large text: AA
Contrast with black, large text4.96:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 11.7Dodgerblue · ΔE 11.7Royal blue · ΔE 19.8Steel blue · ΔE 26.5Slate blue · ΔE 27Medium purple · ΔE 27.4
Nearest named CSS colourCornflower blue (#6495ED)ΔE 11.65, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D98E30
Analogous#30D0D9, #3930D9
Triadic#D9307B, #7BD930
Split complementary#D93930, #D0D930
Tetradic#D930D0, #D98E30, #30D939

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DCE9F9
Lighter +30%#B1CDF1
Lighter +20%#86B2E9
Lighter +10%#5B96E1
Darker −10%#2163B5
Darker −20%#194B8A
Darker −30%#11345F
Darker −40%#091C34
More saturated +25%#1178F8
Less saturated −25%#4F7EBA

Channel breakdown

R48
G123
B217
Red48 (18.8%)
Green123 (48.2%)
Blue217 (85.1%)
Hue213.37°
Saturation (HSL)68.98%
Lightness51.96%
Dominant channelBlue
Hex per channelR 30 · G 7B · B D9

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Nerdulate something else

Nothing in mind? Surprise me · today’s page

Every value on this page was computed from “307bd9” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.