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Recognised as Colour

#5BB1E7

  • #5BB1E7
  • Blue
  • Dark
  • Nearest: Deep skyblue

#5BB1E7 is a blue with RGB values 91, 177, 231 and HSL 203°, 74%, 63%. It is a dark colour, so black text on it reaches 8.9:1 contrast (AAA for normal text). The nearest named colour is Deep skyblue.

Colour values

#5BB1E7#5BB1E7
HEX#5BB1E7
RGBrgb(91, 177, 231)
RGB (0–1)0.3569, 0.6941, 0.9059
RGB percentages35.7%, 69.4%, 90.6%
HSLhsl(203.1, 74.5%, 63.1%)
HSV / HSBhsv(203.1, 60.6%, 90.6%)
CMYK60.6%, 23.4%, 0%, 9.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,009,319
CSS custom property--colour: #5BB1E7;

Brightness & contrast

Relative luminance0.39438WCAG 2.x, 0 is black and 1 is white
Perceived brightness164.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.89:1
Contrast with white2.36:1WCAG normal text: Fail
Contrast with black8.89:1WCAG normal text: AAA
Greyscale equivalent#A3A3A3
Inverted#A44E18

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#98B1EAno red cones; affects about 1% of men; ΔE 15.8 from the original
Deuteranopia#85A2E6no green cones; the most common form, about 1% of men; ΔE 17.7 from the original
Tritanopia#00BFC3no blue cones; rare, and affects men and women equally; ΔE 34.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.36:1WCAG large text: Fail
Contrast with black, large text8.89:1WCAG large text: AAA

Named colours

Deep skyblue · ΔE 11.3Light skyblue · ΔE 12.4Sky blue · ΔE 17.6Steel blue · ΔE 17.9Light steelblue · ΔE 23.5Cornflower blue · ΔE 25.3
Nearest named CSS colourDeep skyblue (#00BFFF)ΔE 11.31, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#E7915B
Analogous#5BE7D7, #5B6BE7
Triadic#E75BB1, #B1E75B
Split complementary#E75B6B, #E7D75B
Tetradic#D75BE7, #E7915B, #6BE75B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#E0F0FB
Lighter +20%#B4DBF4
Lighter +10%#87C6EE
Darker −10%#2F9CE0
Darker −20%#1C81C0
Darker −30%#166393
Darker −40%#0F4567
More saturated +25%#43B6FF
Less saturated −25%#72ACD0

Channel breakdown

R91
G177
B231
Red91 (35.7%)
Green177 (69.4%)
Blue231 (90.6%)
Hue203.14°
Saturation (HSL)74.47%
Lightness63.14%
Dominant channelBlue
Hex per channelR 5B · G B1 · B E7

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Every value on this page was computed from “5bb1e7” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.