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Recognised as Colour

#1C17BD

  • #1C17BD
  • Blue
  • Dark
  • Nearest: Medium blue

#1C17BD is a blue with RGB values 28, 23, 189 and HSL 242°, 78%, 42%. It is a dark colour, so white text on it reaches 11:1 contrast (AAA for normal text). The nearest named colour is Medium blue.

Colour values

#1C17BD#1C17BD
HEX#1C17BD
RGBrgb(28, 23, 189)
RGB (0–1)0.1098, 0.0902, 0.7412
RGB percentages11%, 9%, 74.1%
HSLhsl(241.8, 78.3%, 41.6%)
HSV / HSBhsv(241.8, 87.8%, 74.1%)
CMYK85.2%, 87.8%, 0%, 25.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,841,085
CSS custom property--colour: #1C17BD;

Brightness & contrast

Relative luminance0.04534WCAG 2.x, 0 is black and 1 is white
Perceived brightness67.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.01:1
Contrast with white11.01:1WCAG normal text: AAA
Contrast with black1.91:1WCAG normal text: Fail
Greyscale equivalent#242424
Inverted#E3E842

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0044C1no red cones; affects about 1% of men; ΔE 28.2 from the original
Deuteranopia#0033BAno green cones; the most common form, about 1% of men; ΔE 18.3 from the original
Tritanopia#005170no blue cones; rare, and affects men and women equally; ΔE 88.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text11.01:1WCAG large text: AAA
Contrast with black, large text1.91:1WCAG large text: Fail

Named colours

Medium blue · ΔE 14Dark blue · ΔE 18Blue violet · ΔE 21.9Navy · ΔE 23.1Dark violet · ΔE 26Dark orchid · ΔE 28.9
Nearest named CSS colourMedium blue (#0000CD)ΔE 13.97, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B8BD17
Analogous#1765BD, #6F17BD
Triadic#BD1C17, #17BD1C
Split complementary#BD6F17, #65BD17
Tetradic#BD1765, #B8BD17, #17BD6F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#ADABF5
Lighter +30%#817EEF
Lighter +20%#5550EA
Lighter +10%#2923E4
Darker −10%#151190
Darker −20%#0F0C62
Darker −30%#080635
Darker −40%#010107
More saturated +25%#0600D4
Less saturated −25%#3532A3

Channel breakdown

R28
G23
B189
Red28 (11%)
Green23 (9%)
Blue189 (74.1%)
Hue241.81°
Saturation (HSL)78.3%
Lightness41.57%
Dominant channelBlue
Hex per channelR 1C · G 17 · B BD

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Every value on this page was computed from “1c17bd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.