Nerdulator> put something in

Recognised as Colour

#21354A

  • #21354A
  • Blue
  • Dark
  • Nearest: Dark slate grey

#21354A is a blue with RGB values 33, 53, 74 and HSL 211°, 38%, 21%. It is a dark colour, so white text on it reaches 12.6:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#21354A#21354A
HEX#21354A
RGBrgb(33, 53, 74)
RGB (0–1)0.1294, 0.2078, 0.2902
RGB percentages12.9%, 20.8%, 29%
HSLhsl(210.7, 38.3%, 21%)
HSV / HSBhsv(210.7, 55.4%, 29%)
CMYK55.4%, 28.4%, 0%, 71%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,176,330
CSS custom property--colour: #21354A;

Brightness & contrast

Relative luminance0.03364WCAG 2.x, 0 is black and 1 is white
Perceived brightness51 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.55:1
Contrast with white12.55:1WCAG normal text: AAA
Contrast with black1.67:1WCAG normal text: Fail
Greyscale equivalent#323232
Inverted#DECAB5

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2D364Bno red cones; affects about 1% of men; ΔE 3.8 from the original
Deuteranopia#27324Ano green cones; the most common form, about 1% of men; ΔE 4 from the original
Tritanopia#0D3A3Cno blue cones; rare, and affects men and women equally; ΔE 16.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text12.55:1WCAG large text: AAA
Contrast with black, large text1.67:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 18.6Black · ΔE 26.4Dim grey · ΔE 27.7Slate grey · ΔE 31.8Light slate grey · ΔE 34.8Steel blue · ΔE 35.4
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 18.63, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#4A3621
Analogous#214A4A, #22214A
Triadic#4A2135, #354A21
Split complementary#4A2221, #4A4A21
Tetradic#4A214A, #4A3621, #214A22

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#759BC2
Lighter +30%#5281B2
Lighter +20%#406891
Lighter +10%#314E6D
Darker −10%#111C27
Darker −20%#020203
Darker −30%#000000
Darker −40%#000000
More saturated +25%#143557
Less saturated −25%#2E353D

Channel breakdown

R33
G53
B74
Red33 (12.9%)
Green53 (20.8%)
Blue74 (29%)
Hue210.73°
Saturation (HSL)38.32%
Lightness20.98%
Dominant channelBlue
Hex per channelR 21 · G 35 · B 4A

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 “21354a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.