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Recognised as Colour

#0A63B4

  • #0A63B4
  • Blue
  • Dark
  • Nearest: Cornflower blue

#0A63B4 is a blue with RGB values 10, 99, 180 and HSL 209°, 89%, 37%. It is a dark colour, so white text on it reaches 6.1:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#0A63B4#0A63B4
HEX#0A63B4
RGBrgb(10, 99, 180)
RGB (0–1)0.0392, 0.3882, 0.7059
RGB percentages3.9%, 38.8%, 70.6%
HSLhsl(208.6, 89.5%, 37.3%)
HSV / HSBhsv(208.6, 94.4%, 70.6%)
CMYK94.4%, 45%, 0%, 29.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer680,884
CSS custom property--colour: #0A63B4;

Brightness & contrast

Relative luminance0.12283WCAG 2.x, 0 is black and 1 is white
Perceived brightness97.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.08:1
Contrast with white6.08:1WCAG normal text: AA
Contrast with black3.46:1WCAG normal text: Fail
Greyscale equivalent#565656
Inverted#F59C4B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#376AB7no red cones; affects about 1% of men; ΔE 5 from the original
Deuteranopia#0E5CB2no green cones; the most common form, about 1% of men; ΔE 5 from the original
Tritanopia#007782no blue cones; rare, and affects men and women equally; ΔE 47.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.08:1WCAG large text: AAA
Contrast with black, large text3.46:1WCAG large text: AA

Named colours

Cornflower blue · ΔE 20.3Dark slateblue · ΔE 22.4Dodgerblue · ΔE 22.7Steel blue · ΔE 23.6Royal blue · ΔE 25Slate blue · ΔE 29.6
Nearest named CSS colourCornflower blue (#6495ED)ΔE 20.32, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B45B0A
Analogous#0AB4B0, #0A0EB4
Triadic#B40A63, #63B40A
Split complementary#B40A0E, #B4B00A
Tetradic#B00AB4, #B45B0A, #0EB40A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#91C7F9
Lighter +30%#61AFF6
Lighter +20%#3097F4
Lighter +10%#0D7EE4
Darker −10%#074884
Darker −20%#052E53
Darker −30%#021323
Darker −40%#000000
More saturated +25%#0063BE
Less saturated −25%#22629C

Channel breakdown

R10
G99
B180
Red10 (3.9%)
Green99 (38.8%)
Blue180 (70.6%)
Hue208.59°
Saturation (HSL)89.47%
Lightness37.25%
Dominant channelBlue
Hex per channelR 0A · G 63 · B B4

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Every value on this page was computed from “0a63b4” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.