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Recognised as Colour

#558EEB

  • #558EEB
  • Blue
  • Dark
  • Nearest: Cornflower blue

#558EEB is a blue with RGB values 85, 142, 235 and HSL 217°, 79%, 63%. It is a dark colour, so black text on it reaches 6.5:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#558EEB#558EEB
HEX#558EEB
RGBrgb(85, 142, 235)
RGB (0–1)0.3333, 0.5569, 0.9216
RGB percentages33.3%, 55.7%, 92.2%
HSLhsl(217.2, 78.9%, 62.7%)
HSV / HSBhsv(217.2, 63.8%, 92.2%)
CMYK63.8%, 39.6%, 0%, 7.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,607,147
CSS custom property--colour: #558EEB;

Brightness & contrast

Relative luminance0.27275WCAG 2.x, 0 is black and 1 is white
Perceived brightness142.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.46:1
Contrast with white3.25:1WCAG normal text: Fail
Contrast with black6.46:1WCAG normal text: AA
Greyscale equivalent#898989
Inverted#AA7114

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6496EFno red cones; affects about 1% of men; ΔE 4.1 from the original
Deuteranopia#4E88E9no green cones; the most common form, about 1% of men; ΔE 3.5 from the original
Tritanopia#00A3B1no blue cones; rare, and affects men and women equally; ΔE 53.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.25:1WCAG large text: AA
Contrast with black, large text6.46:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 4.3Dodgerblue · ΔE 10.9Royal blue · ΔE 23.6Steel blue · ΔE 25.7Medium purple · ΔE 27.2Slate blue · ΔE 29.9
Nearest named CSS colourCornflower blue (#6495ED)ΔE 4.27, a close match
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#EBB255
Analogous#55D9EB, #6755EB
Triadic#EB558E, #8EEB55
Split complementary#EB6755, #D9EB55
Tetradic#EB55D9, #EBB255, #55EB67

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#DEE9FB
Lighter +20%#B0CBF6
Lighter +10%#83ACF0
Darker −10%#2770E6
Darker −20%#1758C3
Darker −30%#124495
Darker −40%#0C2F68
More saturated +25%#4189FF
Less saturated −25%#6D94D3

Channel breakdown

R85
G142
B235
Red85 (33.3%)
Green142 (55.7%)
Blue235 (92.2%)
Hue217.2°
Saturation (HSL)78.95%
Lightness62.75%
Dominant channelBlue
Hex per channelR 55 · G 8E · B EB

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Every value on this page was computed from “558eeb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.