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Recognised as Colour

#377B8A

  • #377B8A
  • Cyan
  • Dark
  • Nearest: Teal

#377B8A is a cyan with RGB values 55, 123, 138 and HSL 191°, 43%, 38%. It is a dark colour, so white text on it reaches 4.8:1 contrast (AA for normal text). The nearest named colour is Teal.

Colour values

#377B8A#377B8A
HEX#377B8A
RGBrgb(55, 123, 138)
RGB (0–1)0.2157, 0.4824, 0.5412
RGB percentages21.6%, 48.2%, 54.1%
HSLhsl(190.8, 43%, 37.8%)
HSV / HSBhsv(190.8, 60.1%, 54.1%)
CMYK60.1%, 10.9%, 0%, 45.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,636,106
CSS custom property--colour: #377B8A;

Brightness & contrast

Relative luminance0.16813WCAG 2.x, 0 is black and 1 is white
Perceived brightness109.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.81:1
Contrast with white4.81:1WCAG normal text: AA
Contrast with black4.36:1WCAG normal text: Fail
Greyscale equivalent#6E6E6E
Inverted#C88475

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#70778Bno red cones; affects about 1% of men; ΔE 19 from the original
Deuteranopia#646E8Ano green cones; the most common form, about 1% of men; ΔE 19.9 from the original
Tritanopia#008180no blue cones; rare, and affects men and women equally; ΔE 14.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.81:1WCAG large text: AAA
Contrast with black, large text4.36:1WCAG large text: AA

Named colours

Teal · ΔE 13.6Cadetblue · ΔE 15.3Dark cyan · ΔE 15.6Slate grey · ΔE 15.9Light slate grey · ΔE 16.9Dark slate grey · ΔE 20.6
Nearest named CSS colourTeal (#008080)ΔE 13.58, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8A4637
Analogous#378A70, #37518A
Triadic#8A377B, #7B8A37
Split complementary#8A3751, #8A7037
Tetradic#70378A, #8A4637, #518A37

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#AED6DF
Lighter +30%#8AC4D0
Lighter +20%#65B1C2
Lighter +10%#469CAE
Darker −10%#285A66
Darker −20%#1A3A41
Darker −30%#0B191D
Darker −40%#000000
More saturated +25%#1F8AA2
Less saturated −25%#4F6C72

Channel breakdown

R55
G123
B138
Red55 (21.6%)
Green123 (48.2%)
Blue138 (54.1%)
Hue190.84°
Saturation (HSL)43.01%
Lightness37.84%
Dominant channelBlue
Hex per channelR 37 · G 7B · B 8A

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Every value on this page was computed from “377b8a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.