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Recognised as Colour

#1F448C

  • #1F448C
  • Blue
  • Dark
  • Nearest: Dark slateblue

#1F448C is a blue with RGB values 31, 68, 140 and HSL 220°, 64%, 34%. It is a dark colour, so white text on it reaches 9.3:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#1F448C#1F448C
HEX#1F448C
RGBrgb(31, 68, 140)
RGB (0–1)0.1216, 0.2667, 0.549
RGB percentages12.2%, 26.7%, 54.9%
HSLhsl(219.6, 63.7%, 33.5%)
HSV / HSBhsv(219.6, 77.9%, 54.9%)
CMYK77.9%, 51.4%, 0%, 45.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,049,164
CSS custom property--colour: #1F448C;

Brightness & contrast

Relative luminance0.06319WCAG 2.x, 0 is black and 1 is white
Perceived brightness72.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.28:1
Contrast with white9.28:1WCAG normal text: AAA
Contrast with black2.26:1WCAG normal text: Fail
Greyscale equivalent#414141
Inverted#E0BB73

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#184C8Fno red cones; affects about 1% of men; ΔE 5.9 from the original
Deuteranopia#00428Bno green cones; the most common form, about 1% of men; ΔE 2.7 from the original
Tritanopia#005561no blue cones; rare, and affects men and women equally; ΔE 43.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.28:1WCAG large text: AAA
Contrast with black, large text2.26:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 12.2Midnight blue · ΔE 23.5Rebecca purple · ΔE 29.2Slate blue · ΔE 30.1Royal blue · ΔE 30.3Steel blue · ΔE 31
Nearest named CSS colourDark slateblue (#483D8B)ΔE 12.18, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8C671F
Analogous#1F7B8C, #301F8C
Triadic#8C1F44, #448C1F
Split complementary#8C311F, #7B8C1F
Tetradic#8C1F7B, #8C671F, #1F8C31

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#90AEE7
Lighter +30%#678FDD
Lighter +20%#3D70D4
Lighter +10%#2858B6
Darker −10%#163062
Darker −20%#0D1B38
Darker −30%#03070F
Darker −40%#000000
More saturated +25%#0A3DA1
Less saturated −25%#344B77

Channel breakdown

R31
G68
B140
Red31 (12.2%)
Green68 (26.7%)
Blue140 (54.9%)
Hue219.63°
Saturation (HSL)63.74%
Lightness33.53%
Dominant channelBlue
Hex per channelR 1F · G 44 · B 8C

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Every value on this page was computed from “1f448c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.