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Colour

#1C00CD

  • #1C00CD
  • Blue
  • Dark
  • Nearest: Medium blue

#1C00CD is a blue with RGB values 28, 0, 205 and HSL 248°, 100%, 40%. It is a dark colour, so white text on it reaches 10.9:1 contrast (AAA for normal text). The nearest named colour is Medium blue.

Colour values

#1C00CD#1C00CD
HEX#1C00CD
RGBrgb(28, 0, 205)
RGB (0–1)0.1098, 0, 0.8039
RGB percentages11%, 0%, 80.4%
HSLhsl(248.2, 100%, 40.2%)
HSV / HSBhsv(248.2, 100%, 80.4%)
CMYK86.3%, 100%, 0%, 19.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,835,213
CSS custom property--colour: #1C00CD;

Brightness & contrast

Relative luminance0.04655WCAG 2.x, 0 is black and 1 is white
Perceived brightness70.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.88:1
Contrast with white10.88:1WCAG normal text: AAA
Contrast with black1.93:1WCAG normal text: Fail
Greyscale equivalent#151515
Inverted#E3FF32

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0046D2no red cones; affects about 1% of men; ΔE 33.8 from the original
Deuteranopia#0032CAno green cones; the most common form, about 1% of men; ΔE 22.5 from the original
Tritanopia#005477no blue cones; rare, and affects men and women equally; ΔE 99.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.88:1WCAG large text: AAA
Contrast with black, large text1.93:1WCAG large text: Fail

Named colours

Medium blue · ΔE 1.5Blue · ΔE 22.2Blue violet · ΔE 22.7Dark violet · ΔE 25.8Dark blue · ΔE 29.6Navy · ΔE 34.8
Nearest named CSS colourMedium blue (#0000CD)ΔE 1.5, below the just-noticeable difference
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B1CD00
Analogous#004ACD, #8300CD
Triadic#CD1C00, #00CD1C
Split complementary#CD8300, #4BCD00
Tetradic#CD004A, #B1CD00, #00CD83

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A89AFF
Lighter +30%#7C67FF
Lighter +20%#5034FF
Lighter +10%#2401FF
Darker −10%#15009A
Darker −20%#0E0067
Darker −30%#070034
Darker −40%#000001
More saturated +25%#1C00CD
Less saturated −25%#2F1AB3

Channel breakdown

R28
G0
B205
Red28 (11%)
Green0 (0%)
Blue205 (80.4%)
Hue248.2°
Saturation (HSL)100%
Lightness40.2%
Dominant channelBlue
Hex per channelR 1C · G 00 · B CD

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Every value on this page was computed from “1c00cd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.