#5566dd - Thick Blue color

This shade reads as a medium-deep periwinkle-blue with clear violet undertones. It feels vibrant but slightly softened, bridging bold cobalt and gentle lavender. The tone suggests twilight skies, rich indigo denim, or a contemporary brand accent that’s lively without overpowering. It pairs well with warm neutrals, soft creams, pale blush, or muted gold for contrast. Use it for buttons, headlines, or accents when you want a confident, slightly playful cool-blue presence.

color #5566dd

#5566dd color RGB value is 85, 102, 221, and the CMYK value is 0.615, 0.538, 0.00, 0.133. Alternative names for that color are: thick blue, indigo, royalblue, royal blue, blue.

Color Conversion

Name
Values
CSS
RGB(0-255)
85, 102, 221
rgb(85, 102, 221)
CMYK
0.615, 0.538, 0.00, 0.133
-
sRGB
0.333, 0.400, 0.867
rgb(33.3% 40% 86.7%)
Adobe® 98 RGB compatible
0.355, 0.399, 0.850
color(a98-rgb 0.355 0.399 0.85)
HCT
280, 61.9, 47.8
color(--hct 280 42.7% 47.8%)
HSL
233, 66.7, 60.0
hsl(233 66.7% 60%)
HSV
233, 61.5, 86.7
color(--hsv 233 61.5% 86.7%)
HWB
233, 33.3, 13.3
hwb(233 33.3% 13.3%)
Lab
46.9, 22.1, -64.2
lab(46.9 22.1 -64.2)
P3
0.346, 0.398, 0.838
color(display-p3 0.346 0.398 0.838)
XYZ D50
0.194, 0.159, 0.530
color(xyz-d50 0.194 0.159 0.53)

Shades

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Tints

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Tones

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Color Harmonies

HEX:#5566dd
RGB:85 102 221
HSL:232.5deg 66.67% 60%
HEX:#ddcc55
RGB:221 204 85
HSL:52.5deg 66.67% 60%

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