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Recognised as Colour

#307CAD

  • #307CAD
  • Blue
  • Dark
  • Nearest: Steel blue

#307CAD is a blue with RGB values 48, 124, 173 and HSL 204°, 57%, 43%. It is a dark colour, so black text on it reaches 4.6:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#307CAD#307CAD
HEX#307CAD
RGBrgb(48, 124, 173)
RGB (0–1)0.1882, 0.4863, 0.6784
RGB percentages18.8%, 48.6%, 67.8%
HSLhsl(203.5, 56.6%, 43.3%)
HSV / HSBhsv(203.5, 72.3%, 67.8%)
CMYK72.3%, 28.3%, 0%, 32.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,177,645
CSS custom property--colour: #307CAD;

Brightness & contrast

Relative luminance0.18061WCAG 2.x, 0 is black and 1 is white
Perceived brightness114.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.61:1
Contrast with white4.55:1WCAG normal text: AA
Contrast with black4.61:1WCAG normal text: AA
Greyscale equivalent#6F6F6F
Inverted#CF8352

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#657DAFno red cones; affects about 1% of men; ΔE 12.2 from the original
Deuteranopia#5471ACno green cones; the most common form, about 1% of men; ΔE 13.5 from the original
Tritanopia#00888Dno blue cones; rare, and affects men and women equally; ΔE 30.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.55:1WCAG large text: AAA
Contrast with black, large text4.61:1WCAG large text: AAA

Named colours

Steel blue · ΔE 4Slate grey · ΔE 22.9Light slate grey · ΔE 23Cornflower blue · ΔE 26.2Deep skyblue · ΔE 27.3Cadetblue · ΔE 30.7
Nearest named CSS colourSteel blue (#4682B4)ΔE 3.97, a close match
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AD6130
Analogous#30ADA0, #303EAD
Triadic#AD307C, #7CAD30
Split complementary#AD303E, #AD9F30
Tetradic#9F30AD, #AD6130, #3EAD30

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BCDAED
Lighter +30%#95C3E1
Lighter +20%#6DADD6
Lighter +10%#4597CB
Darker −10%#255F85
Darker −20%#1A435D
Darker −30%#0F2635
Darker −40%#040A0D
More saturated +25%#1482C9
Less saturated −25%#4C7691

Channel breakdown

R48
G124
B173
Red48 (18.8%)
Green124 (48.6%)
Blue173 (67.8%)
Hue203.52°
Saturation (HSL)56.56%
Lightness43.33%
Dominant channelBlue
Hex per channelR 30 · G 7C · B AD

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