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Recognised as Colour

#667DAD

  • #667DAD
  • Blue
  • Dark
  • Nearest: Steel blue

#667DAD is a blue with RGB values 102, 125, 173 and HSL 221°, 30%, 54%. It is a dark colour, so black text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#667DAD#667DAD
HEX#667DAD
RGBrgb(102, 125, 173)
RGB (0–1)0.4, 0.4902, 0.6784
RGB percentages40%, 49%, 67.8%
HSLhsl(220.6, 30.2%, 53.9%)
HSV / HSBhsv(220.6, 41%, 67.8%)
CMYK41%, 27.7%, 0%, 32.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,716,845
CSS custom property--colour: #667DAD;

Brightness & contrast

Relative luminance0.20509WCAG 2.x, 0 is black and 1 is white
Perceived brightness125.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.1:1
Contrast with white4.12:1WCAG normal text: Fail
Contrast with black5.1:1WCAG normal text: AA
Greyscale equivalent#7C7C7C
Inverted#998252

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6C81AFno red cones; affects about 1% of men; ΔE 2.1 from the original
Deuteranopia#657AACno green cones; the most common form, about 1% of men; ΔE 1.8 from the original
Tritanopia#4E878Eno blue cones; rare, and affects men and women equally; ΔE 28 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.12:1WCAG large text: AA
Contrast with black, large text5.1:1WCAG large text: AAA

Named colours

Steel blue · ΔE 9.3Light slate grey · ΔE 18.6Slate grey · ΔE 18.7Cornflower blue · ΔE 23.8Gray · ΔE 28.5Dim grey · ΔE 29.5
Nearest named CSS colourSteel blue (#4682B4)ΔE 9.3, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AD9666
Analogous#66A1AD, #7366AD
Triadic#AD667D, #7DAD66
Split complementary#AD7266, #A1AD66
Tetradic#AD66A1, #AD9666, #66AD72

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#EBEEF4
Lighter +30%#CAD2E2
Lighter +20%#A8B5D1
Lighter +10%#8799BF
Darker −10%#4E6492
Darker −20%#3C4D71
Darker −30%#2B374F
Darker −40%#19202E
More saturated +25%#4973CA
Less saturated −25%#838790

Channel breakdown

R102
G125
B173
Red102 (40%)
Green125 (49%)
Blue173 (67.8%)
Hue220.56°
Saturation (HSL)30.21%
Lightness53.92%
Dominant channelBlue
Hex per channelR 66 · G 7D · B AD

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Every value on this page was computed from “667dad” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.