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Recognised as Colour

#100B63

  • #100B63
  • Blue
  • Dark
  • Nearest: Midnight blue

#100B63 is a blue with RGB values 16, 11, 99 and HSL 243°, 80%, 22%. It is a dark colour, so white text on it reaches 16.8:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#100B63#100B63
HEX#100B63
RGBrgb(16, 11, 99)
RGB (0–1)0.0627, 0.0431, 0.3882
RGB percentages6.3%, 4.3%, 38.8%
HSLhsl(243.4, 80%, 21.6%)
HSV / HSBhsv(243.4, 88.9%, 38.8%)
CMYK83.8%, 88.9%, 0%, 61.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,051,491
CSS custom property--colour: #100B63;

Brightness & contrast

Relative luminance0.0125WCAG 2.x, 0 is black and 1 is white
Perceived brightness35.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 16.8:1
Contrast with white16.8:1WCAG normal text: AAA
Contrast with black1.25:1WCAG normal text: Fail
Greyscale equivalent#121212
Inverted#EFF49C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#002265no red cones; affects about 1% of men; ΔE 17.5 from the original
Deuteranopia#001962no green cones; the most common form, about 1% of men; ΔE 11.1 from the original
Tritanopia#002839no blue cones; rare, and affects men and women equally; ΔE 53.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text16.8:1WCAG large text: AAA
Contrast with black, large text1.25:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 5.6Indigo · ΔE 20.2Navy · ΔE 20.4Dark slateblue · ΔE 22.7Rebecca purple · ΔE 23.7Dark blue · ΔE 25.5
Nearest named CSS colourMidnight blue (#191970)ΔE 5.59, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5E630B
Analogous#0B3263, #3C0B63
Triadic#63100B, #0B6310
Split complementary#633C0B, #32630B
Tetradic#630B32, #5E630B, #0B633C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#584FEB
Lighter +30%#2C21E6
Lighter +20%#1F15BF
Lighter +10%#171091
Darker −10%#090635
Darker −20%#010107
Darker −30%#000000
Darker −40%#000000
More saturated +25%#06006E
Less saturated −25%#1C1955

Channel breakdown

R16
G11
B99
Red16 (6.3%)
Green11 (4.3%)
Blue99 (38.8%)
Hue243.41°
Saturation (HSL)80%
Lightness21.57%
Dominant channelBlue
Hex per channelR 10 · G 0B · B 63

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Every value on this page was computed from “100b63” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.