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Recognised as Colour

#1C2180

  • #1C2180
  • Blue
  • Dark
  • Nearest: Midnight blue

#1C2180 is a blue with RGB values 28, 33, 128 and HSL 237°, 64%, 31%. It is a dark colour, so white text on it reaches 13.3:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#1C2180#1C2180
HEX#1C2180
RGBrgb(28, 33, 128)
RGB (0–1)0.1098, 0.1294, 0.502
RGB percentages11%, 12.9%, 50.2%
HSLhsl(237, 64.1%, 30.6%)
HSV / HSBhsv(237, 78.1%, 50.2%)
CMYK78.1%, 74.2%, 0%, 49.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,843,584
CSS custom property--colour: #1C2180;

Brightness & contrast

Relative luminance0.02893WCAG 2.x, 0 is black and 1 is white
Perceived brightness52.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.3:1
Contrast with white13.3:1WCAG normal text: AAA
Contrast with black1.58:1WCAG normal text: Fail
Greyscale equivalent#272727
Inverted#E3DE7F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003483no red cones; affects about 1% of men; ΔE 15.4 from the original
Deuteranopia#002B7Eno green cones; the most common form, about 1% of men; ΔE 10.2 from the original
Tritanopia#003C4Eno blue cones; rare, and affects men and women equally; ΔE 57.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text13.3:1WCAG large text: AAA
Contrast with black, large text1.58:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 5.6Dark slateblue · ΔE 17.5Rebecca purple · ΔE 17.9Indigo · ΔE 18.9Navy · ΔE 19.5Dark blue · ΔE 23.7
Nearest named CSS colourMidnight blue (#191970)ΔE 5.64, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#807B1C
Analogous#1C5380, #491C80
Triadic#801C21, #21801C
Split complementary#80491C, #53801C
Tetradic#801C53, #807B1C, #1C8049

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8489E4
Lighter +30%#5A61DB
Lighter +20%#3038D2
Lighter +10%#252CAA
Darker −10%#131656
Darker −20%#0A0B2C
Darker −30%#010102
Darker −40%#000000
More saturated +25%#080F94
Less saturated −25%#30336D

Channel breakdown

R28
G33
B128
Red28 (11%)
Green33 (12.9%)
Blue128 (50.2%)
Hue237°
Saturation (HSL)64.1%
Lightness30.59%
Dominant channelBlue
Hex per channelR 1C · G 21 · B 80

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Every value on this page was computed from “1c2180” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.