Nerdulator> put something in

Recognised as Colour

#21448C

  • #21448C
  • Blue
  • Dark
  • Nearest: Dark slateblue

#21448C is a blue with RGB values 33, 68, 140 and HSL 220°, 62%, 34%. It is a dark colour, so white text on it reaches 9.3:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#21448C#21448C
HEX#21448C
RGBrgb(33, 68, 140)
RGB (0–1)0.1294, 0.2667, 0.549
RGB percentages12.9%, 26.7%, 54.9%
HSLhsl(220.4, 61.8%, 33.9%)
HSV / HSBhsv(220.4, 76.4%, 54.9%)
CMYK76.4%, 51.4%, 0%, 45.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,180,236
CSS custom property--colour: #21448C;

Brightness & contrast

Relative luminance0.06351WCAG 2.x, 0 is black and 1 is white
Perceived brightness72.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.25:1
Contrast with white9.25:1WCAG normal text: AAA
Contrast with black2.27:1WCAG normal text: Fail
Greyscale equivalent#424242
Inverted#DEBB73

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#194C8Fno red cones; affects about 1% of men; ΔE 6 from the original
Deuteranopia#00438Bno green cones; the most common form, about 1% of men; ΔE 3.1 from the original
Tritanopia#005561no blue cones; rare, and affects men and women equally; ΔE 43.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.25:1WCAG large text: AAA
Contrast with black, large text2.27:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 11.9Midnight blue · ΔE 23.4Rebecca purple · ΔE 28.9Slate blue · ΔE 30Royal blue · ΔE 30.3Steel blue · ΔE 31
Nearest named CSS colourDark slateblue (#483D8B)ΔE 11.9, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8C6921
Analogous#21798C, #34218C
Triadic#8C2144, #448C21
Split complementary#8C3421, #798C21
Tetradic#8C2179, #8C6921, #218C34

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#93AEE6
Lighter +30%#6A8FDC
Lighter +20%#4170D2
Lighter +10%#2B58B5
Darker −10%#173063
Darker −20%#0E1C39
Darker −30%#040810
Darker −40%#000000
More saturated +25%#0B3DA2
Less saturated −25%#374B76

Channel breakdown

R33
G68
B140
Red33 (12.9%)
Green68 (26.7%)
Blue140 (54.9%)
Hue220.37°
Saturation (HSL)61.85%
Lightness33.92%
Dominant channelBlue
Hex per channelR 21 · G 44 · B 8C

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 “21448c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.