Colour

#647FBC

#647FBC
Blue
Dark
Nearest: Steel blue

#647FBC is a blue with RGB values 100, 127, 188 and HSL 222°, 40%, 56%. It is a dark colour, so black text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#647FBC#647FBC

HEX#647FBC

RGBrgb(100, 127, 188)

RGB (0–1)0.3922, 0.498, 0.7373

RGB percentages39.2%, 49.8%, 73.7%

HSLhsl(221.6, 39.6%, 56.5%)

HSV / HSBhsv(221.6, 46.8%, 73.7%)

CMYK46.8%, 32.4%, 0%, 26.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,586,300

CSS custom property--colour: #647FBC;

Brightness & contrast

Relative luminance0.21519WCAG 2.x, 0 is black and 1 is white

Perceived brightness128.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.3:1

Contrast with white3.96:1WCAG normal text: Fail

Contrast with black5.3:1WCAG normal text: AA

Greyscale equivalent#7E7E7E

Inverted#9B8043

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6884BFno red cones; affects about 1% of men; ΔE 2.3 from the original

Deuteranopia#5F7CBBno green cones; the most common form, about 1% of men; ΔE 1.8 from the original

Tritanopia#428C95no blue cones; rare, and affects men and women equally; ΔE 35.8 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text3.96:1WCAG large text: AA

Contrast with black, large text5.3:1WCAG large text: AAA

Named colours

Steel blue · ΔE 11.5 Cornflower blue · ΔE 16.7 Light slate grey · ΔE 25.8 Slate grey · ΔE 26.1 Dodgerblue · ΔE 29.1 Dark slateblue · ΔE 30.4

Nearest named CSS colourSteel blue (#4682B4)ΔE 11.48, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#BCA164

Analogous#64ABBC, #7564BC

Triadic#BC647F, #7FBC64

Split complementary#BC7564, #ABBC64

Tetradic#BC64AB, #BCA164, #64BC75

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#F2F5FA

Lighter +30%#CFD7EA

Lighter +20%#ABBADB

Lighter +10%#889CCB

Darker −10%#4864A5

Darker −20%#384F82

Darker −30%#29395E

Darker −40%#19243B

More saturated +25%#4874D8

Less saturated −25%#808AA0

Channel breakdown

R100

G127

B188

Red100 (39.2%)

Green127 (49.8%)

Blue188 (73.7%)

Hue221.59°

Saturation (HSL)39.64%

Lightness56.47%

Dominant channelBlue

Hex per channelR 64 · G 7F · B BC

Keep nerding

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

#647FBC

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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