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Colour

#1D37C3

  • #1D37C3
  • Blue
  • Dark
  • Nearest: Dark blue

#1D37C3 is a blue with RGB values 29, 55, 195 and HSL 231°, 74%, 44%. It is a dark colour, so white text on it reaches 8.8:1 contrast (AAA for normal text). The nearest named colour is Dark blue.

Colour values

#1D37C3#1D37C3
HEX#1D37C3
RGBrgb(29, 55, 195)
RGB (0–1)0.1137, 0.2157, 0.7647
RGB percentages11.4%, 21.6%, 76.5%
HSLhsl(230.6, 74.1%, 43.9%)
HSV / HSBhsv(230.6, 85.1%, 76.5%)
CMYK85.1%, 71.8%, 0%, 23.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,914,819
CSS custom property--colour: #1D37C3;

Brightness & contrast

Relative luminance0.06934WCAG 2.x, 0 is black and 1 is white
Perceived brightness79.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.8:1
Contrast with white8.8:1WCAG normal text: AAA
Contrast with black2.39:1WCAG normal text: Fail
Greyscale equivalent#3C3C3C
Inverted#E2C83C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0053C7no red cones; affects about 1% of men; ΔE 20.8 from the original
Deuteranopia#0042C1no green cones; the most common form, about 1% of men; ΔE 9.9 from the original
Tritanopia#005F79no blue cones; rare, and affects men and women equally; ΔE 78.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.8:1WCAG large text: AAA
Contrast with black, large text2.39:1WCAG large text: Fail

Named colours

Dark blue · ΔE 19.2Navy · ΔE 21.5Medium slateblue · ΔE 22.6Slate blue · ΔE 22.9Indigo · ΔE 25.3Royal blue · ΔE 25.4
Nearest named CSS colourDark blue (#00008B)ΔE 19.18, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#C3A91D
Analogous#1D8AC3, #561DC3
Triadic#C31D37, #37C31D
Split complementary#C3561D, #8AC31D
Tetradic#C31D8A, #C3A91D, #1DC356

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B8C1F4
Lighter +30%#8B9BEE
Lighter +20%#5F74E7
Lighter +10%#324EE1
Darker −10%#162A97
Darker −20%#101E6A
Darker −30%#09113E
Darker −40%#030511
More saturated +25%#0124DF
Less saturated −25%#394AA7

Channel breakdown

R29
G55
B195
Red29 (11.4%)
Green55 (21.6%)
Blue195 (76.5%)
Hue230.6°
Saturation (HSL)74.11%
Lightness43.92%
Dominant channelBlue
Hex per channelR 1D · G 37 · B C3

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Every value on this page was computed from “1d37c3” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.