Recognised as Colour

#688CCB

#688CCB
Blue
Dark
Nearest: Steel blue

#688CCB is a blue with RGB values 104, 140, 203 and HSL 218°, 49%, 60%. It is a dark colour, so black text on it reaches 6.2:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#688CCB#688CCB

HEX#688CCB

RGBrgb(104, 140, 203)

RGB (0–1)0.4078, 0.549, 0.7961

RGB percentages40.8%, 54.9%, 79.6%

HSLhsl(218.2, 48.8%, 60.2%)

HSV / HSBhsv(218.2, 48.8%, 79.6%)

CMYK48.8%, 31%, 0%, 20.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,851,787

CSS custom property--colour: #688CCB;

Brightness & contrast

Relative luminance0.26011WCAG 2.x, 0 is black and 1 is white

Perceived brightness139.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.2:1

Contrast with white3.39:1WCAG normal text: Fail

Contrast with black6.2:1WCAG normal text: AA

Greyscale equivalent#898989

Inverted#977334

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#7491CEno red cones; affects about 1% of men; ΔE 3 from the original

Deuteranopia#6987CAno green cones; the most common form, about 1% of men; ΔE 3.6 from the original

Tritanopia#3D9AA2no blue cones; rare, and affects men and women equally; ΔE 38.1 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text3.39:1WCAG large text: AA

Contrast with black, large text6.2:1WCAG large text: AAA

Named colours

Steel blue · ΔE 11.3 Cornflower blue · ΔE 14.2 Light slate grey · ΔE 26.4 Slate grey · ΔE 27.3 Deep skyblue · ΔE 27.5 Dodgerblue · ΔE 27.5

Nearest named CSS colourSteel blue (#4682B4)ΔE 11.34, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#CBA768

Analogous#68BDCB, #7668CB

Triadic#CB688C, #8CCB68

Split complementary#CB7668, #BDCB68

Tetradic#CB68BD, #CBA768, #68CB75

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#DAE3F2

Lighter +20%#B4C6E5

Lighter +10%#8EA9D8

Darker −10%#426FBE

Darker −20%#355998

Darker −30%#274373

Darker −40%#1A2D4D

More saturated +25%#4F85E4

Less saturated −25%#8193B2

Channel breakdown

R104

G140

B203

Red104 (40.8%)

Green140 (54.9%)

Blue203 (79.6%)

Hue218.18°

Saturation (HSL)48.77%

Lightness60.2%

Dominant channelBlue

Hex per channelR 68 · G 8C · B CB

Keep nerding

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

#688CCB

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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