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Colour

#678A8F

  • #678A8F
  • Cyan
  • Dark
  • Nearest: Light slate grey

#678A8F is a cyan with RGB values 103, 138, 143 and HSL 188°, 16%, 48%. It is a dark colour, so black text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Light slate grey.

Colour values

#678A8F#678A8F
HEX#678A8F
RGBrgb(103, 138, 143)
RGB (0–1)0.4039, 0.5412, 0.5608
RGB percentages40.4%, 54.1%, 56.1%
HSLhsl(187.5, 16.3%, 48.2%)
HSV / HSBhsv(187.5, 28%, 56.1%)
CMYK28%, 3.5%, 0%, 43.9%naive device-independent conversion; real print needs an ICC profile
24-bit integer6,785,679
CSS custom property--colour: #678A8F;

Brightness & contrast

Relative luminance0.23044WCAG 2.x, 0 is black and 1 is white
Perceived brightness129.2 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#838383
Inverted#987570

Colour vision & accessibility

Protanopia#84878Fno red cones; affects about 1% of men; ΔE 11.7 from the original
Deuteranopia#7D828Fno green cones; the most common form, about 1% of men; ΔE 11.9 from the original
Tritanopia#5A8D8Bno blue cones; rare, and affects men and women equally; ΔE 6.9 from the original
Distinguishable without hueYesnever 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

Nearest named CSS colourLight slate grey (#778899)ΔE 9.81, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

Complementary#8F6C67
Analogous#678F80, #67768F
Triadic#8F678A, #8A8F67
Split complementary#8F6776, #8F8067
Tetradic#80678F, #8F6C67, #768F67

Tints, shades & saturation

Lighter +40%#DCE5E6
Lighter +30%#BECED1
Lighter +20%#A1B8BB
Lighter +10%#83A1A6
Darker −10%#526D71
Darker −20%#3C5154
Darker −30%#273436
Darker −40%#121818
More saturated +25%#48A1AE
Less saturated −25%#7B7B7B

Channel breakdown

R103
G138
B143
Red103 (40.4%)
Green138 (54.1%)
Blue143 (56.1%)
Hue187.5°
Saturation (HSL)16.26%
Lightness48.24%
Dominant channelBlue
Hex per channelR 67 · G 8A · B 8F

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Every value on this page was computed from “678a8f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.