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Colour

#1B7FBF

  • #1B7FBF
  • Blue
  • Dark
  • Nearest: Steel blue

#1B7FBF is a blue with RGB values 27, 127, 191 and HSL 203°, 75%, 43%. It is a dark colour, so black text on it reaches 4.8:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#1B7FBF#1B7FBF
HEX#1B7FBF
RGBrgb(27, 127, 191)
RGB (0–1)0.1059, 0.498, 0.749
RGB percentages10.6%, 49.8%, 74.9%
HSLhsl(203.4, 75.2%, 42.7%)
HSV / HSBhsv(203.4, 85.9%, 74.9%)
CMYK85.9%, 33.5%, 0%, 25.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,802,175
CSS custom property--colour: #1B7FBF;

Brightness & contrast

Relative luminance0.19173WCAG 2.x, 0 is black and 1 is white
Perceived brightness117.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.83:1
Contrast with white4.34:1WCAG normal text: Fail
Contrast with black4.83:1WCAG normal text: AA
Greyscale equivalent#6E6E6E
Inverted#E48040

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6181C2no red cones; affects about 1% of men; ΔE 12.1 from the original
Deuteranopia#4A73BEno green cones; the most common form, about 1% of men; ΔE 13.7 from the original
Tritanopia#008F96no blue cones; rare, and affects men and women equally; ΔE 37.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.34:1WCAG large text: AA
Contrast with black, large text4.83:1WCAG large text: AAA

Named colours

Steel blue · ΔE 9Cornflower blue · ΔE 19.3Deep skyblue · ΔE 25.6Dodgerblue · ΔE 27.7Light slate grey · ΔE 30.4Slate grey · ΔE 30.6
Nearest named CSS colourSteel blue (#4682B4)ΔE 9.02, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BF5B1B
Analogous#1BBFAD, #1B2DBF
Triadic#BF1B7F, #7FBF1B
Split complementary#BF1B2D, #BFAD1B
Tetradic#AD1BBF, #BF5B1B, #2DBF1B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B2DAF4
Lighter +30%#85C5EE
Lighter +20%#59B0E7
Lighter +10%#2C9AE1
Darker −10%#156192
Darker −20%#0E4466
Darker −30%#082639
Darker −40%#02080C
More saturated +25%#0085DA
Less saturated −25%#3679A4

Channel breakdown

R27
G127
B191
Red27 (10.6%)
Green127 (49.8%)
Blue191 (74.9%)
Hue203.41°
Saturation (HSL)75.23%
Lightness42.75%
Dominant channelBlue
Hex per channelR 1B · G 7F · B BF

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Every value on this page was computed from “1b7fbf” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.