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Colour

#177A8E

  • #177A8E
  • Cyan
  • Dark
  • Nearest: Teal

#177A8E is a cyan with RGB values 23, 122, 142 and HSL 190°, 72%, 32%. It is a dark colour, so white text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Teal.

Colour values

#177A8E#177A8E
HEX#177A8E
RGBrgb(23, 122, 142)
RGB (0–1)0.0902, 0.4784, 0.5569
RGB percentages9%, 47.8%, 55.7%
HSLhsl(190.1, 72.1%, 32.4%)
HSV / HSBhsv(190.1, 83.8%, 55.7%)
CMYK83.8%, 14.1%, 0%, 44.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,538,702
CSS custom property--colour: #177A8E;

Brightness & contrast

Relative luminance0.16054WCAG 2.x, 0 is black and 1 is white
Perceived brightness105.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.99:1
Contrast with white4.99:1WCAG normal text: AA
Contrast with black4.21:1WCAG normal text: Fail
Greyscale equivalent#666666
Inverted#E88571

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6C768Fno red cones; affects about 1% of men; ΔE 22.2 from the original
Deuteranopia#5D6B8Eno green cones; the most common form, about 1% of men; ΔE 23.4 from the original
Tritanopia#008180no blue cones; rare, and affects men and women equally; ΔE 14.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.99:1WCAG large text: AAA
Contrast with black, large text4.21:1WCAG large text: AA

Named colours

Teal · ΔE 13.7Dark cyan · ΔE 15.5Cadetblue · ΔE 18Slate grey · ΔE 20Light slate grey · ΔE 20.8Steel blue · ΔE 21.3
Nearest named CSS colourTeal (#008080)ΔE 13.75, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8E2B17
Analogous#178E67, #173E8E
Triadic#8E177A, #7A8E17
Split complementary#8E173E, #8E6717
Tetradic#67178E, #8E2B17, #3E8E17

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#86DAEB
Lighter +30%#5ACDE4
Lighter +20%#2EC0DD
Lighter +10%#1EA0BA
Darker −10%#105462
Darker −20%#092F36
Darker −30%#02090A
Darker −40%#000000
More saturated +25%#0288A3
Less saturated −25%#2C6C79

Channel breakdown

R23
G122
B142
Red23 (9%)
Green122 (47.8%)
Blue142 (55.7%)
Hue190.08°
Saturation (HSL)72.12%
Lightness32.35%
Dominant channelBlue
Hex per channelR 17 · G 7A · B 8E

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Every value on this page was computed from “177a8e” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.