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Colour

#40B4EB

  • #40B4EB
  • Cyan
  • Dark
  • Nearest: Deep skyblue

#40B4EB is a cyan with RGB values 64, 180, 235 and HSL 199°, 81%, 59%. 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

#40B4EB#40B4EB
HEX#40B4EB
RGBrgb(64, 180, 235)
RGB (0–1)0.251, 0.7059, 0.9216
RGB percentages25.1%, 70.6%, 92.2%
HSLhsl(199.3, 81%, 58.6%)
HSV / HSBhsv(199.3, 72.8%, 92.2%)
CMYK72.8%, 23.4%, 0%, 7.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,240,619
CSS custom property--colour: #40B4EB;

Brightness & contrast

Relative luminance0.39731WCAG 2.x, 0 is black and 1 is white
Perceived brightness162.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.95:1
Contrast with white2.35:1WCAG normal text: Fail
Contrast with black8.95:1WCAG normal text: AAA
Greyscale equivalent#9F9F9F
Inverted#BF4B14

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#99B2EEno red cones; affects about 1% of men; ΔE 21 from the original
Deuteranopia#82A2EAno green cones; the most common form, about 1% of men; ΔE 22.5 from the original
Tritanopia#00C3C7no blue cones; rare, and affects men and women equally; ΔE 33.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.35:1WCAG large text: Fail
Contrast with black, large text8.95:1WCAG large text: AAA

Named colours

Deep skyblue · ΔE 7.3Light skyblue · ΔE 13.9Sky blue · ΔE 18.4Steel blue · ΔE 20.4Light steelblue · ΔE 27Cornflower blue · ΔE 28
Nearest named CSS colourDeep skyblue (#00BFFF)ΔE 7.3, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#EB7740
Analogous#40EBCC, #405FEB
Triadic#EB40B4, #B4EB40
Split complementary#EB405F, #EBCC40
Tetradic#CC40EB, #EB7740, #5FEB40

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F9FDFE
Lighter +30%#CAEAFA
Lighter +20%#9CD8F5
Lighter +10%#6EC6F0
Darker −10%#18A0E0
Darker −20%#137FB2
Darker −30%#0E5E84
Darker −40%#093D56
More saturated +25%#2CBBFF
Less saturated −25%#5AABD1

Channel breakdown

R64
G180
B235
Red64 (25.1%)
Green180 (70.6%)
Blue235 (92.2%)
Hue199.3°
Saturation (HSL)81.04%
Lightness58.63%
Dominant channelBlue
Hex per channelR 40 · G B4 · B EB

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Every value on this page was computed from “40b4eb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.