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Colour

#3F7DA0

  • #3F7DA0
  • Blue
  • Dark
  • Nearest: Steel blue

#3F7DA0 is a blue with RGB values 63, 125, 160 and HSL 202°, 43%, 44%. It is a dark colour, so black text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#3F7DA0#3F7DA0
HEX#3F7DA0
RGBrgb(63, 125, 160)
RGB (0–1)0.2471, 0.4902, 0.6275
RGB percentages24.7%, 49%, 62.7%
HSLhsl(201.6, 43.5%, 43.7%)
HSV / HSBhsv(201.6, 60.6%, 62.7%)
CMYK60.6%, 21.9%, 0%, 37.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,160,928
CSS custom property--colour: #3F7DA0;

Brightness & contrast

Relative luminance0.18262WCAG 2.x, 0 is black and 1 is white
Perceived brightness115.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.65:1
Contrast with white4.51:1WCAG normal text: AA
Contrast with black4.65:1WCAG normal text: AA
Greyscale equivalent#727272
Inverted#C0825F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6C7CA2no red cones; affects about 1% of men; ΔE 13.1 from the original
Deuteranopia#5F729Fno green cones; the most common form, about 1% of men; ΔE 14.2 from the original
Tritanopia#008689no blue cones; rare, and affects men and women equally; ΔE 24.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.51:1WCAG large text: AAA
Contrast with black, large text4.65:1WCAG large text: AAA

Named colours

Steel blue · ΔE 9.4Slate grey · ΔE 16.1Light slate grey · ΔE 16.5Cadetblue · ΔE 23.2Teal · ΔE 25.6Gray · ΔE 26.7
Nearest named CSS colourSteel blue (#4682B4)ΔE 9.39, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A0623F
Analogous#3FA093, #3F4DA0
Triadic#A03F7D, #7DA03F
Split complementary#A03F4D, #A0933F
Tetradic#923FA0, #A0623F, #4DA03F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C3DBE8
Lighter +30%#9FC4D9
Lighter +20%#7AAECB
Lighter +10%#5697BC
Darker −10%#31607B
Darker −20%#224457
Darker −30%#142732
Darker −40%#050B0E
More saturated +25%#2385BC
Less saturated −25%#5B7584

Channel breakdown

R63
G125
B160
Red63 (24.7%)
Green125 (49%)
Blue160 (62.7%)
Hue201.65°
Saturation (HSL)43.5%
Lightness43.73%
Dominant channelBlue
Hex per channelR 3F · G 7D · B A0

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Every value on this page was computed from “3f7da0” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.