Nerdulator> put something in

Colour

#0063CB

  • #0063CB
  • Blue
  • Dark
  • Nearest: Royal blue

#0063CB is a blue with RGB values 0, 99, 203 and HSL 211°, 100%, 40%. It is a dark colour, so white text on it reaches 5.8:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#0063CB#0063CB
HEX#0063CB
RGBrgb(0, 99, 203)
RGB (0–1)0, 0.3882, 0.7961
RGB percentages0%, 38.8%, 79.6%
HSLhsl(210.7, 100%, 39.8%)
HSV / HSBhsv(210.7, 100%, 79.6%)
CMYK100%, 51.2%, 0%, 20.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer25,547
CSS custom property--colour: #0063CB;

Brightness & contrast

Relative luminance0.13235WCAG 2.x, 0 is black and 1 is white
Perceived brightness102.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.76:1
Contrast with white5.76:1WCAG normal text: AA
Contrast with black3.65:1WCAG normal text: Fail
Greyscale equivalent#555555
Inverted#FF9C34

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#186ECFno red cones; affects about 1% of men; ΔE 6.9 from the original
Deuteranopia#005EC9no green cones; the most common form, about 1% of men; ΔE 3.2 from the original
Tritanopia#007D8Dno blue cones; rare, and affects men and women equally; ΔE 59.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.76:1WCAG large text: AAA
Contrast with black, large text3.65:1WCAG large text: AA

Named colours

Royal blue · ΔE 11.6Dodgerblue · ΔE 17.9Slate blue · ΔE 19.5Cornflower blue · ΔE 23.1Dark slateblue · ΔE 23.9Medium purple · ΔE 25.4
Nearest named CSS colourRoyal blue (#4169E1)ΔE 11.61, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CB6800
Analogous#00C9CB, #0200CB
Triadic#CB0063, #63CB00
Split complementary#CB0200, #C9CB00
Tetradic#CB00C9, #CB6800, #00CB02

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#98CAFF
Lighter +30%#65B0FF
Lighter +20%#3296FF
Lighter +10%#007CFE
Darker −10%#004A98
Darker −20%#003165
Darker −30%#001832
Darker −40%#000000
More saturated +25%#0063CB
Less saturated −25%#1964B2

Channel breakdown

R0
G99
B203
Red0 (0%)
Green99 (38.8%)
Blue203 (79.6%)
Hue210.74°
Saturation (HSL)100%
Lightness39.8%
Dominant channelBlue
Hex per channelR 00 · G 63 · B CB

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Nerdulate something else

Nothing in mind? Surprise me · today’s page

Every value on this page was computed from “0063cb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.