Nerdulator> put something in

Recognised as Colour

#213BBF

  • #213BBF
  • Blue
  • Dark
  • Nearest: Slate blue

#213BBF is a blue with RGB values 33, 59, 191 and HSL 230°, 71%, 44%. It is a dark colour, so white text on it reaches 8.6:1 contrast (AAA for normal text). The nearest named colour is Slate blue.

Colour values

#213BBF#213BBF
HEX#213BBF
RGBrgb(33, 59, 191)
RGB (0–1)0.1294, 0.2314, 0.749
RGB percentages12.9%, 23.1%, 74.9%
HSLhsl(230.1, 70.5%, 43.9%)
HSV / HSBhsv(230.1, 82.7%, 74.9%)
CMYK82.7%, 69.1%, 0%, 25.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,177,983
CSS custom property--colour: #213BBF;

Brightness & contrast

Relative luminance0.07213WCAG 2.x, 0 is black and 1 is white
Perceived brightness80.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.6:1
Contrast with white8.6:1WCAG normal text: AAA
Contrast with black2.44:1WCAG normal text: Fail
Greyscale equivalent#3F3F3F
Inverted#DEC440

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0054C3no red cones; affects about 1% of men; ΔE 19 from the original
Deuteranopia#0044BDno green cones; the most common form, about 1% of men; ΔE 8.8 from the original
Tritanopia#006078no blue cones; rare, and affects men and women equally; ΔE 74.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.6:1WCAG large text: AAA
Contrast with black, large text2.44:1WCAG large text: Fail

Named colours

Slate blue · ΔE 19Dark blue · ΔE 20.6Medium slateblue · ΔE 20.7Royal blue · ΔE 21.5Navy · ΔE 21.7Rebecca purple · ΔE 24.2
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 19.05, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BFA521
Analogous#218ABF, #5621BF
Triadic#BF213B, #3BBF21
Split complementary#BF5621, #8ABF21
Tetradic#BF218A, #BFA521, #21BF56

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B9C3F3
Lighter +30%#8E9DEB
Lighter +20%#6277E4
Lighter +10%#3752DC
Darker −10%#192E94
Darker −20%#122068
Darker −30%#0A133D
Darker −40%#030511
More saturated +25%#0528DB
Less saturated −25%#3D4EA3

Channel breakdown

R33
G59
B191
Red33 (12.9%)
Green59 (23.1%)
Blue191 (74.9%)
Hue230.13°
Saturation (HSL)70.54%
Lightness43.92%
Dominant channelBlue
Hex per channelR 21 · G 3B · B BF

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 “213bbf” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.