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Colour

#1B2667

  • #1B2667
  • Blue
  • Dark
  • Nearest: Dark slateblue

#1B2667 is a blue with RGB values 27, 38, 103 and HSL 231°, 58%, 25%. It is a dark colour, so white text on it reaches 13.8:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#1B2667#1B2667
HEX#1B2667
RGBrgb(27, 38, 103)
RGB (0–1)0.1059, 0.149, 0.4039
RGB percentages10.6%, 14.9%, 40.4%
HSLhsl(231.3, 58.5%, 25.5%)
HSV / HSBhsv(231.3, 73.8%, 40.4%)
CMYK73.8%, 63.1%, 0%, 59.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,779,303
CSS custom property--colour: #1B2667;

Brightness & contrast

Relative luminance0.02599WCAG 2.x, 0 is black and 1 is white
Perceived brightness47.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.82:1
Contrast with white13.82:1WCAG normal text: AAA
Contrast with black1.52:1WCAG normal text: Fail
Greyscale equivalent#282828
Inverted#E4D998

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003069no red cones; affects about 1% of men; ΔE 9.9 from the original
Deuteranopia#002966no green cones; the most common form, about 1% of men; ΔE 5.5 from the original
Tritanopia#003642no blue cones; rare, and affects men and women equally; ΔE 41.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.82:1WCAG large text: AAA
Contrast with black, large text1.52:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 14.2Midnight blue · ΔE 15.8Rebecca purple · ΔE 28.4Indigo · ΔE 34.9Slate blue · ΔE 36.4Navy · ΔE 37.8
Nearest named CSS colourDark slateblue (#483D8B)ΔE 14.21, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#675C1B
Analogous#1B4C67, #361B67
Triadic#671B26, #26671B
Split complementary#67361B, #4C671B
Tetradic#671B4C, #675C1B, #1B6736

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7482DA
Lighter +30%#4B5ED0
Lighter +20%#3044B8
Lighter +10%#26358F
Darker −10%#10173F
Darker −20%#060816
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0B1A77
Less saturated −25%#2B3257

Channel breakdown

R27
G38
B103
Red27 (10.6%)
Green38 (14.9%)
Blue103 (40.4%)
Hue231.32°
Saturation (HSL)58.46%
Lightness25.49%
Dominant channelBlue
Hex per channelR 1B · G 26 · B 67

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Every value on this page was computed from “1b2667” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.