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Recognised as Colour

#557CE0

  • #557CE0
  • Blue
  • Dark
  • Nearest: Dodgerblue

#557CE0 is a blue with RGB values 85, 124, 224 and HSL 223°, 69%, 61%. It is a dark colour, so black text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Dodgerblue.

Colour values

#557CE0#557CE0
HEX#557CE0
RGBrgb(85, 124, 224)
RGB (0–1)0.3333, 0.4863, 0.8784
RGB percentages33.3%, 48.6%, 87.8%
HSLhsl(223.2, 69.2%, 60.6%)
HSV / HSBhsv(223.2, 62.1%, 87.8%)
CMYK62.1%, 44.6%, 0%, 12.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,602,528
CSS custom property--colour: #557CE0;

Brightness & contrast

Relative luminance0.21728WCAG 2.x, 0 is black and 1 is white
Perceived brightness130 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.35:1
Contrast with white3.93:1WCAG normal text: Fail
Contrast with black5.35:1WCAG normal text: AA
Greyscale equivalent#7B7B7B
Inverted#AA831F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#4D87E4no red cones; affects about 1% of men; ΔE 7.6 from the original
Deuteranopia#367ADEno green cones; the most common form, about 1% of men; ΔE 4.9 from the original
Tritanopia#0093A3no blue cones; rare, and affects men and women equally; ΔE 57.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.93:1WCAG large text: AA
Contrast with black, large text5.35:1WCAG large text: AAA

Named colours

Dodgerblue · ΔE 12.3Cornflower blue · ΔE 12.8Royal blue · ΔE 14.8Medium purple · ΔE 20.3Slate blue · ΔE 20.8Medium slateblue · ΔE 26
Nearest named CSS colourDodgerblue (#1E90FF)ΔE 12.35, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#E0B955
Analogous#55C2E0, #7355E0
Triadic#E0557C, #7CE055
Split complementary#E07355, #C2E055
Tetradic#E055C2, #E0B955, #55E073

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#D6E0F8
Lighter +20%#ABBEF0
Lighter +10%#809DE8
Darker −10%#2A5BD8
Darker −20%#2048AF
Darker −30%#183684
Darker −40%#102559
More saturated +25%#3C71F9
Less saturated −25%#6E87C7

Channel breakdown

R85
G124
B224
Red85 (33.3%)
Green124 (48.6%)
Blue224 (87.8%)
Hue223.17°
Saturation (HSL)69.15%
Lightness60.59%
Dominant channelBlue
Hex per channelR 55 · G 7C · B E0

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Every value on this page was computed from “557ce0” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.