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Recognised as Colour

#17515D

  • #17515D
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#17515D is a cyan with RGB values 23, 81, 93 and HSL 190°, 60%, 23%. It is a dark colour, so white text on it reaches 8.9:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#17515D#17515D
HEX#17515D
RGBrgb(23, 81, 93)
RGB (0–1)0.0902, 0.3176, 0.3647
RGB percentages9%, 31.8%, 36.5%
HSLhsl(190.3, 60.3%, 22.7%)
HSV / HSBhsv(190.3, 75.3%, 36.5%)
CMYK75.3%, 12.9%, 0%, 63.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,528,157
CSS custom property--colour: #17515D;

Brightness & contrast

Relative luminance0.06857WCAG 2.x, 0 is black and 1 is white
Perceived brightness70.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.86:1
Contrast with white8.86:1WCAG normal text: AAA
Contrast with black2.37:1WCAG normal text: Fail
Greyscale equivalent#464646
Inverted#E8AEA2

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#484E5Eno red cones; affects about 1% of men; ΔE 15.8 from the original
Deuteranopia#3F475Dno green cones; the most common form, about 1% of men; ΔE 16.7 from the original
Tritanopia#005655no blue cones; rare, and affects men and women equally; ΔE 10.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.86:1WCAG large text: AAA
Contrast with black, large text2.37:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 9Dim grey · ΔE 22.7Teal · ΔE 22.8Slate grey · ΔE 24.5Dark cyan · ΔE 26.8Light slate grey · ΔE 27.1
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 8.97, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5D2317
Analogous#175D46, #172E5D
Triadic#5D1751, #515D17
Split complementary#5D172E, #5D4617
Tetradic#46175D, #5D2317, #2E5D17

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#67C6D9
Lighter +30%#3EB6CF
Lighter +20%#2B98AF
Lighter +10%#217586
Darker −10%#0D2D34
Darker −20%#030A0B
Darker −30%#000000
Darker −40%#000000
More saturated +25%#095B6B
Less saturated −25%#26474F

Channel breakdown

R23
G81
B93
Red23 (9%)
Green81 (31.8%)
Blue93 (36.5%)
Hue190.29°
Saturation (HSL)60.34%
Lightness22.75%
Dominant channelBlue
Hex per channelR 17 · G 51 · B 5D

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Every value on this page was computed from “17515d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.