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Recognised as Colour

#537B90

  • #537B90
  • Blue
  • Dark
  • Nearest: Slate grey

#537B90 is a blue with RGB values 83, 123, 144 and HSL 201°, 27%, 45%. It is a dark colour, so black text on it reaches 4.6:1 contrast (AA for normal text). The nearest named colour is Slate grey.

Colour values

#537B90#537B90
HEX#537B90
RGBrgb(83, 123, 144)
RGB (0–1)0.3255, 0.4824, 0.5647
RGB percentages32.5%, 48.2%, 56.5%
HSLhsl(200.7, 26.9%, 44.5%)
HSV / HSBhsv(200.7, 42.4%, 56.5%)
CMYK42.4%, 14.6%, 0%, 43.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,471,120
CSS custom property--colour: #537B90;

Brightness & contrast

Relative luminance0.18019WCAG 2.x, 0 is black and 1 is white
Perceived brightness115.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.6:1
Contrast with white4.56:1WCAG normal text: AA
Contrast with black4.6:1WCAG normal text: AA
Greyscale equivalent#747474
Inverted#AC846F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#717A91no red cones; affects about 1% of men; ΔE 10.5 from the original
Deuteranopia#687390no green cones; the most common form, about 1% of men; ΔE 11.1 from the original
Tritanopia#3B8182no blue cones; rare, and affects men and women equally; ΔE 15.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.56:1WCAG large text: AAA
Contrast with black, large text4.6:1WCAG large text: AAA

Named colours

Slate grey · ΔE 8.6Light slate grey · ΔE 9.9Steel blue · ΔE 17.2Gray · ΔE 18.2Cadetblue · ΔE 18.4Dim grey · ΔE 18.5
Nearest named CSS colourSlate grey (#708090)ΔE 8.62, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#906853
Analogous#539086, #535D90
Triadic#90537B, #7B9053
Split complementary#90535D, #908653
Tetradic#865390, #906853, #5D9053

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CDDBE2
Lighter +30%#ADC3CF
Lighter +20%#8CACBD
Lighter +10%#6C95AA
Darker −10%#405F70
Darker −20%#2E444F
Darker −30%#1B282F
Darker −40%#080C0F
More saturated +25%#3784AC
Less saturated −25%#6F7274

Channel breakdown

R83
G123
B144
Red83 (32.5%)
Green123 (48.2%)
Blue144 (56.5%)
Hue200.66°
Saturation (HSL)26.87%
Lightness44.51%
Dominant channelBlue
Hex per channelR 53 · G 7B · B 90

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Every value on this page was computed from “537b90” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.