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Colour

#178CC7

  • #178CC7
  • Blue
  • Dark
  • Nearest: Steel blue

#178CC7 is a blue with RGB values 23, 140, 199 and HSL 200°, 79%, 44%. It is a dark colour, so black text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#178CC7#178CC7
HEX#178CC7
RGBrgb(23, 140, 199)
RGB (0–1)0.0902, 0.549, 0.7804
RGB percentages9%, 54.9%, 78%
HSLhsl(200.1, 79.3%, 43.5%)
HSV / HSBhsv(200.1, 88.4%, 78%)
CMYK88.4%, 29.6%, 0%, 22%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,543,367
CSS custom property--colour: #178CC7;

Brightness & contrast

Relative luminance0.23062WCAG 2.x, 0 is black and 1 is white
Perceived brightness127.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.61:1
Contrast with white3.74:1WCAG normal text: Fail
Contrast with black5.61:1WCAG normal text: AA
Greyscale equivalent#777777
Inverted#E87338

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6F8CCAno red cones; affects about 1% of men; ΔE 16.1 from the original
Deuteranopia#587DC6no green cones; the most common form, about 1% of men; ΔE 18 from the original
Tritanopia#009BA1no blue cones; rare, and affects men and women equally; ΔE 34.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.74:1WCAG large text: AA
Contrast with black, large text5.61:1WCAG large text: AAA

Named colours

Steel blue · ΔE 8.8Deep skyblue · ΔE 19.8Cornflower blue · ΔE 22.2Light skyblue · ΔE 26.8Light slate grey · ΔE 28.7Slate grey · ΔE 29.3
Nearest named CSS colourSteel blue (#4682B4)ΔE 8.79, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#C75217
Analogous#17C7AA, #1734C7
Triadic#C7178C, #8CC717
Split complementary#C71734, #C7AA17
Tetradic#AA17C7, #C75217, #34C717

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B4E0F6
Lighter +30%#86CDF1
Lighter +20%#58BAEC
Lighter +10%#2BA7E6
Darker −10%#126C99
Darker −20%#0C4C6C
Darker −30%#072C3E
Darker −40%#020B10
More saturated +25%#0094DE
Less saturated −25%#3383AB

Channel breakdown

R23
G140
B199
Red23 (9%)
Green140 (54.9%)
Blue199 (78%)
Hue200.11°
Saturation (HSL)79.28%
Lightness43.53%
Dominant channelBlue
Hex per channelR 17 · G 8C · B C7

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Every value on this page was computed from “178cc7” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.