Recognised as Colour

#1D37CF

#1D37CF
Blue
Dark
Nearest: Dark blue

#1D37CF is a blue with RGB values 29, 55, 207 and HSL 231°, 75%, 46%. It is a dark colour, so white text on it reaches 8.4:1 contrast (AAA for normal text). The nearest named colour is Dark blue.

Colour values

#1D37CF#1D37CF

HEX#1D37CF

RGBrgb(29, 55, 207)

RGB (0–1)0.1137, 0.2157, 0.8118

RGB percentages11.4%, 21.6%, 81.2%

HSLhsl(231.2, 75.4%, 46.3%)

HSV / HSBhsv(231.2, 86%, 81.2%)

CMYK86%, 73.4%, 0%, 18.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,914,831

CSS custom property--colour: #1D37CF;

Brightness & contrast

Relative luminance0.07499WCAG 2.x, 0 is black and 1 is white

Perceived brightness83.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 8.4:1

Contrast with white8.4:1WCAG normal text: AAA

Contrast with black2.5:1WCAG normal text: Fail

Greyscale equivalent#3C3C3C

Inverted#E2C830

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#0056D3no red cones; affects about 1% of men; ΔE 22.6 from the original

Deuteranopia#0045CCno green cones; the most common form, about 1% of men; ΔE 12.3 from the original

Tritanopia#006480no blue cones; rare, and affects men and women equally; ΔE 84.1 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text8.4:1WCAG large text: AAA

Contrast with black, large text2.5:1WCAG large text: Fail

Named colours

Dark blue · ΔE 21.3 Medium blue · ΔE 24.3 Blue violet · ΔE 24.5 Medium slateblue · ΔE 24.7 Navy · ΔE 24.8 Slate blue · ΔE 27.5

Nearest named CSS colourDark blue (#00008B)ΔE 21.28, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#CFB51D

Analogous#1D90CF, #5C1DCF

Triadic#CF1D37, #37CF1D

Split complementary#CF5C1D, #90CF1D

Tetradic#CF1D90, #CFB51D, #1DCF5C

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#C2C9F6

Lighter +30%#95A2F0

Lighter +20%#687BEA

Lighter +10%#3B54E4

Darker −10%#172BA2

Darker −20%#101F76

Darker −30%#0A1349

Darker −40%#04071C

More saturated +25%#0022EC

Less saturated −25%#3B4CB1

Channel breakdown

R29

G55

B207

Red29 (11.4%)

Green55 (21.6%)

Blue207 (81.2%)

Hue231.24°

Saturation (HSL)75.42%

Lightness46.27%

Dominant channelBlue

Hex per channelR 1D · G 37 · B CF

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

#1D37CF

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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