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Recognised as Colour

#1B70AF

  • #1B70AF
  • Blue
  • Dark
  • Nearest: Steel blue

#1B70AF is a blue with RGB values 27, 112, 175 and HSL 206°, 73%, 40%. It is a dark colour, so white text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#1B70AF#1B70AF
HEX#1B70AF
RGBrgb(27, 112, 175)
RGB (0–1)0.1059, 0.4392, 0.6863
RGB percentages10.6%, 43.9%, 68.6%
HSLhsl(205.5, 73.3%, 39.6%)
HSV / HSBhsv(205.5, 84.6%, 68.6%)
CMYK84.6%, 36%, 0%, 31.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,798,319
CSS custom property--colour: #1B70AF;

Brightness & contrast

Relative luminance0.14916WCAG 2.x, 0 is black and 1 is white
Perceived brightness105.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.27:1
Contrast with white5.27:1WCAG normal text: AA
Contrast with black3.98:1WCAG normal text: Fail
Greyscale equivalent#626262
Inverted#E48F50

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5273B2no red cones; affects about 1% of men; ΔE 9.2 from the original
Deuteranopia#3C66AEno green cones; the most common form, about 1% of men; ΔE 10.7 from the original
Tritanopia#007F87no blue cones; rare, and affects men and women equally; ΔE 37.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.27:1WCAG large text: AAA
Contrast with black, large text3.98:1WCAG large text: AA

Named colours

Steel blue · ΔE 11.1Cornflower blue · ΔE 21.5Dodgerblue · ΔE 29.1Slate grey · ΔE 30.6Light slate grey · ΔE 31Dark slateblue · ΔE 31
Nearest named CSS colourSteel blue (#4682B4)ΔE 11.07, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AF5A1B
Analogous#1BAFA4, #1B26AF
Triadic#AF1B70, #70AF1B
Split complementary#AF1B26, #AFA41B
Tetradic#A41BAF, #AF5A1B, #26AF1B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A5D1F1
Lighter +30%#79BAEA
Lighter +20%#4DA3E3
Lighter +10%#228CDB
Darker −10%#145483
Darker −20%#0D3757
Darker −30%#071B2A
Darker −40%#000000
More saturated +25%#0274C8
Less saturated −25%#346C96

Channel breakdown

R27
G112
B175
Red27 (10.6%)
Green112 (43.9%)
Blue175 (68.6%)
Hue205.54°
Saturation (HSL)73.27%
Lightness39.61%
Dominant channelBlue
Hex per channelR 1B · G 70 · B AF

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Every value on this page was computed from “1b70af” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.