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Recognised as Colour

#100DCF

  • #100DCF
  • Blue
  • Dark
  • Nearest: Medium blue

#100DCF is a blue with RGB values 16, 13, 207 and HSL 241°, 88%, 43%. It is a dark colour, so white text on it reaches 10.6:1 contrast (AAA for normal text). The nearest named colour is Medium blue.

Colour values

#100DCF#100DCF
HEX#100DCF
RGBrgb(16, 13, 207)
RGB (0–1)0.0627, 0.051, 0.8118
RGB percentages6.3%, 5.1%, 81.2%
HSLhsl(240.9, 88.2%, 43.1%)
HSV / HSBhsv(240.9, 93.7%, 81.2%)
CMYK92.3%, 93.7%, 0%, 18.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,052,111
CSS custom property--colour: #100DCF;

Brightness & contrast

Relative luminance0.04903WCAG 2.x, 0 is black and 1 is white
Perceived brightness71.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.6:1
Contrast with white10.6:1WCAG normal text: AAA
Contrast with black1.98:1WCAG normal text: Fail
Greyscale equivalent#1C1C1C
Inverted#EFF230

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0048D4no red cones; affects about 1% of men; ΔE 32.2 from the original
Deuteranopia#0034CCno green cones; the most common form, about 1% of men; ΔE 20.9 from the original
Tritanopia#005779no blue cones; rare, and affects men and women equally; ΔE 98.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.6:1WCAG large text: AAA
Contrast with black, large text1.98:1WCAG large text: Fail

Named colours

Medium blue · ΔE 2.8Blue violet · ΔE 22.5Blue · ΔE 23.3Dark violet · ΔE 26.3Dark blue · ΔE 28.6Navy · ΔE 33.8
Nearest named CSS colourMedium blue (#0000CD)ΔE 2.84, a close match
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CCCF0D
Analogous#0D6BCF, #710DCF
Triadic#CF100D, #0DCF10
Split complementary#CF710D, #6BCF0D
Tetradic#CF0D6B, #CCCF0D, #0DCF71

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#AFAEFA
Lighter +30%#807EF7
Lighter +20%#514EF4
Lighter +10%#211EF1
Darker −10%#0C0A9F
Darker −20%#09076F
Darker −30%#05043F
Darker −40%#01010F
More saturated +25%#0300DC
Less saturated −25%#2B29B3

Channel breakdown

R16
G13
B207
Red16 (6.3%)
Green13 (5.1%)
Blue207 (81.2%)
Hue240.93°
Saturation (HSL)88.18%
Lightness43.14%
Dominant channelBlue
Hex per channelR 10 · G 0D · B CF

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Every value on this page was computed from “100dcf” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.