Nerdulator> put something in

Colour

#003F99

  • #003F99
  • Blue
  • Dark
  • Nearest: Dark slateblue

#003F99 is a blue with RGB values 0, 63, 153 and HSL 215°, 100%, 30%. It is a dark colour, so white text on it reaches 9.7:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#003F99#003F99
HEX#003F99
RGBrgb(0, 63, 153)
RGB (0–1)0, 0.2471, 0.6
RGB percentages0%, 24.7%, 60%
HSLhsl(215.3, 100%, 30%)
HSV / HSBhsv(215.3, 100%, 60%)
CMYK100%, 58.8%, 0%, 40%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,281
CSS custom property--colour: #003F99;

Brightness & contrast

Relative luminance0.05855WCAG 2.x, 0 is black and 1 is white
Perceived brightness70.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.67:1
Contrast with white9.67:1WCAG normal text: AAA
Contrast with black2.17:1WCAG normal text: Fail
Greyscale equivalent#383838
Inverted#FFC066

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004B9Cno red cones; affects about 1% of men; ΔE 9 from the original
Deuteranopia#003E97no green cones; the most common form, about 1% of men; ΔE 0.7 from the original
Tritanopia#005665no blue cones; rare, and affects men and women equally; ΔE 53.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.67:1WCAG large text: AAA
Contrast with black, large text2.17:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 13Midnight blue · ΔE 17.8Royal blue · ΔE 22.8Slate blue · ΔE 22.8Rebecca purple · ΔE 23.6Medium purple · ΔE 30.8
Nearest named CSS colourDark slateblue (#483D8B)ΔE 13, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#995A00
Analogous#008C99, #0D0099
Triadic#99003F, #3F9900
Split complementary#990E00, #8B9900
Tetradic#99008C, #995A00, #00990E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#66A5FF
Lighter +30%#3387FF
Lighter +20%#0069FF
Lighter +10%#0054CC
Darker −10%#002A66
Darker −20%#001533
Darker −30%#000000
Darker −40%#000000
More saturated +25%#003F99
Less saturated −25%#134286

Channel breakdown

R0
G63
B153
Red0 (0%)
Green63 (24.7%)
Blue153 (60%)
Hue215.29°
Saturation (HSL)100%
Lightness30%
Dominant channelBlue
Hex per channelR 00 · G 3F · B 99

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 “003f99” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.