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Recognised as Colour

#1F508E

  • #1F508E
  • Blue
  • Dark
  • Nearest: Dark slateblue

#1F508E is a blue with RGB values 31, 80, 142 and HSL 214°, 64%, 34%. It is a dark colour, so white text on it reaches 8.1:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#1F508E#1F508E
HEX#1F508E
RGBrgb(31, 80, 142)
RGB (0–1)0.1216, 0.3137, 0.5569
RGB percentages12.2%, 31.4%, 55.7%
HSLhsl(213.5, 64.2%, 33.9%)
HSV / HSBhsv(213.5, 78.2%, 55.7%)
CMYK78.2%, 43.7%, 0%, 44.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,052,238
CSS custom property--colour: #1F508E;

Brightness & contrast

Relative luminance0.07982WCAG 2.x, 0 is black and 1 is white
Perceived brightness79.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.09:1
Contrast with white8.09:1WCAG normal text: AAA
Contrast with black2.6:1WCAG normal text: Fail
Greyscale equivalent#4A4A4A
Inverted#E0AF71

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#315590no red cones; affects about 1% of men; ΔE 3.5 from the original
Deuteranopia#1D4B8Dno green cones; the most common form, about 1% of men; ΔE 3.8 from the original
Tritanopia#005F68no blue cones; rare, and affects men and women equally; ΔE 38.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.09:1WCAG large text: AAA
Contrast with black, large text2.6:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 19.8Steel blue · ΔE 22.5Cornflower blue · ΔE 29.9Midnight blue · ΔE 32.6Slate grey · ΔE 35.3Dodgerblue · ΔE 35.4
Nearest named CSS colourDark slateblue (#483D8B)ΔE 19.85, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8E5D1F
Analogous#1F878E, #261F8E
Triadic#8E1F50, #508E1F
Split complementary#8E261F, #878E1F
Tetradic#8E1F87, #8E5D1F, #1F8E26

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#92B8E7
Lighter +30%#689CDE
Lighter +20%#3E81D5
Lighter +10%#2868B8
Darker −10%#163864
Darker −20%#0D213A
Darker −30%#040910
Darker −40%#000000
More saturated +25%#094DA4
Less saturated −25%#355378

Channel breakdown

R31
G80
B142
Red31 (12.2%)
Green80 (31.4%)
Blue142 (55.7%)
Hue213.51°
Saturation (HSL)64.16%
Lightness33.92%
Dominant channelBlue
Hex per channelR 1F · G 50 · B 8E

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Every value on this page was computed from “1f508e” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.