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Recognised as Colour

#1B2669

  • #1B2669
  • Blue
  • Dark
  • Nearest: Dark slateblue

#1B2669 is a blue with RGB values 27, 38, 105 and HSL 232°, 59%, 26%. It is a dark colour, so white text on it reaches 13.7:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#1B2669#1B2669
HEX#1B2669
RGBrgb(27, 38, 105)
RGB (0–1)0.1059, 0.149, 0.4118
RGB percentages10.6%, 14.9%, 41.2%
HSLhsl(231.5, 59.1%, 25.9%)
HSV / HSBhsv(231.5, 74.3%, 41.2%)
CMYK74.3%, 63.8%, 0%, 58.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,779,305
CSS custom property--colour: #1B2669;

Brightness & contrast

Relative luminance0.02639WCAG 2.x, 0 is black and 1 is white
Perceived brightness48.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.74:1
Contrast with white13.74:1WCAG normal text: AAA
Contrast with black1.53:1WCAG normal text: Fail
Greyscale equivalent#282828
Inverted#E4D996

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00316Bno red cones; affects about 1% of men; ΔE 10.6 from the original
Deuteranopia#002A68no green cones; the most common form, about 1% of men; ΔE 6.2 from the original
Tritanopia#003743no blue cones; rare, and affects men and women equally; ΔE 42.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.74:1WCAG large text: AAA
Contrast with black, large text1.53:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 13.6Midnight blue · ΔE 14.6Rebecca purple · ΔE 27.4Indigo · ΔE 33.7Slate blue · ΔE 35.4Navy · ΔE 36.6
Nearest named CSS colourDark slateblue (#483D8B)ΔE 13.56, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#695E1B
Analogous#1B4D69, #371B69
Triadic#691B26, #26691B
Split complementary#69371B, #4D691B
Tetradic#691B4D, #695E1B, #1B6937

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7583DB
Lighter +30%#4C5FD1
Lighter +20%#3043BA
Lighter +10%#253592
Darker −10%#111740
Darker −20%#060918
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0A1A7A
Less saturated −25%#2B3259

Channel breakdown

R27
G38
B105
Red27 (10.6%)
Green38 (14.9%)
Blue105 (41.2%)
Hue231.54°
Saturation (HSL)59.09%
Lightness25.88%
Dominant channelBlue
Hex per channelR 1B · G 26 · B 69

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Every value on this page was computed from “1b2669” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.