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Recognised as Colour

#2187AF

  • #2187AF
  • Cyan
  • Dark
  • Nearest: Steel blue

#2187AF is a cyan with RGB values 33, 135, 175 and HSL 197°, 68%, 41%. It is a dark colour, so black text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#2187AF#2187AF
HEX#2187AF
RGBrgb(33, 135, 175)
RGB (0–1)0.1294, 0.5294, 0.6863
RGB percentages12.9%, 52.9%, 68.6%
HSLhsl(196.9, 68.3%, 40.8%)
HSV / HSBhsv(196.9, 81.1%, 68.6%)
CMYK81.1%, 22.9%, 0%, 31.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,197,423
CSS custom property--colour: #2187AF;

Brightness & contrast

Relative luminance0.20746WCAG 2.x, 0 is black and 1 is white
Perceived brightness120.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.15:1
Contrast with white4.08:1WCAG normal text: Fail
Contrast with black5.15:1WCAG normal text: AA
Greyscale equivalent#747474
Inverted#DE7850

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#7285B1no red cones; affects about 1% of men; ΔE 18.8 from the original
Deuteranopia#6078AEno green cones; the most common form, about 1% of men; ΔE 20.3 from the original
Tritanopia#009294no blue cones; rare, and affects men and women equally; ΔE 25.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.08:1WCAG large text: AA
Contrast with black, large text5.15:1WCAG large text: AAA

Named colours

Steel blue · ΔE 10.5Light slate grey · ΔE 21.8Slate grey · ΔE 22.1Cadetblue · ΔE 23.9Deep skyblue · ΔE 24.3Teal · ΔE 25.7
Nearest named CSS colourSteel blue (#4682B4)ΔE 10.52, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AF4921
Analogous#21AF90, #2140AF
Triadic#AF2187, #87AF21
Split complementary#AF2140, #AF9021
Tetradic#9021AF, #AF4921, #40AF21

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#ADDDEF
Lighter +30%#82CBE7
Lighter +20%#57B9DF
Lighter +10%#2CA7D7
Darker −10%#196684
Darker −20%#114559
Darker −30%#09242E
Darker −40%#010303
More saturated +25%#0792C9
Less saturated −25%#3B7C95

Channel breakdown

R33
G135
B175
Red33 (12.9%)
Green135 (52.9%)
Blue175 (68.6%)
Hue196.9°
Saturation (HSL)68.27%
Lightness40.78%
Dominant channelBlue
Hex per channelR 21 · G 87 · B AF

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Every value on this page was computed from “2187af” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.