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Recognised as Colour

#42B2FA

  • #42B2FA
  • Blue
  • Dark
  • Nearest: Deep skyblue

#42B2FA is a blue with RGB values 66, 178, 250 and HSL 203°, 95%, 62%. It is a dark colour, so black text on it reaches 9:1 contrast (AAA for normal text). The nearest named colour is Deep skyblue.

Colour values

#42B2FA#42B2FA
HEX#42B2FA
RGBrgb(66, 178, 250)
RGB (0–1)0.2588, 0.698, 0.9804
RGB percentages25.9%, 69.8%, 98%
HSLhsl(203.5, 94.8%, 62%)
HSV / HSBhsv(203.5, 73.6%, 98%)
CMYK73.6%, 28.8%, 0%, 2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,371,194
CSS custom property--colour: #42B2FA;

Brightness & contrast

Relative luminance0.39901WCAG 2.x, 0 is black and 1 is white
Perceived brightness164.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.98:1
Contrast with white2.34:1WCAG normal text: Fail
Contrast with black8.98:1WCAG normal text: AAA
Greyscale equivalent#9F9F9F
Inverted#BD4D05

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#91B3FDno red cones; affects about 1% of men; ΔE 16.4 from the original
Deuteranopia#77A2F9no green cones; the most common form, about 1% of men; ΔE 18.2 from the original
Tritanopia#00C4CBno blue cones; rare, and affects men and women equally; ΔE 41.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.34:1WCAG large text: Fail
Contrast with black, large text8.98:1WCAG large text: AAA

Named colours

Deep skyblue · ΔE 10.1Light skyblue · ΔE 19.4Cornflower blue · ΔE 19.7Steel blue · ΔE 21.5Sky blue · ΔE 26.2Dodgerblue · ΔE 28
Nearest named CSS colourDeep skyblue (#00BFFF)ΔE 10.12, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FA8A42
Analogous#42FAE6, #4256FA
Triadic#FA42B2, #B2FA42
Split complementary#FA4256, #FAE642
Tetradic#E642FA, #FA8A42, #56FA42

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#D7EFFE
Lighter +20%#A5DAFD
Lighter +10%#74C6FB
Darker −10%#109EF9
Darker −20%#0681D0
Darker −30%#04629F
Darker −40%#03446D
More saturated +25%#3DB3FF
Less saturated −25%#5AADE2

Channel breakdown

R66
G178
B250
Red66 (25.9%)
Green178 (69.8%)
Blue250 (98%)
Hue203.48°
Saturation (HSL)94.85%
Lightness61.96%
Dominant channelBlue
Hex per channelR 42 · G B2 · B FA

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Every value on this page was computed from “42b2fa” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.