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Recognised as Colour

#21526D

  • #21526D
  • Blue
  • Dark
  • Nearest: Dark slate grey

#21526D is a blue with RGB values 33, 82, 109 and HSL 201°, 54%, 28%. It is a dark colour, so white text on it reaches 8.4:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#21526D#21526D
HEX#21526D
RGBrgb(33, 82, 109)
RGB (0–1)0.1294, 0.3216, 0.4275
RGB percentages12.9%, 32.2%, 42.7%
HSLhsl(201.3, 53.5%, 27.8%)
HSV / HSBhsv(201.3, 69.7%, 42.7%)
CMYK69.7%, 24.8%, 0%, 57.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,183,789
CSS custom property--colour: #21526D;

Brightness & contrast

Relative luminance0.07462WCAG 2.x, 0 is black and 1 is white
Perceived brightness75 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.43:1
Contrast with white8.43:1WCAG normal text: AAA
Contrast with black2.49:1WCAG normal text: Fail
Greyscale equivalent#4A4A4A
Inverted#DEAD92

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#45516Eno red cones; affects about 1% of men; ΔE 10.6 from the original
Deuteranopia#3B4A6Dno green cones; the most common form, about 1% of men; ΔE 11.5 from the original
Tritanopia#00595Bno blue cones; rare, and affects men and women equally; ΔE 19.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.43:1WCAG large text: AAA
Contrast with black, large text2.49:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 17.4Slate grey · ΔE 22.8Steel blue · ΔE 23.1Dim grey · ΔE 24.5Light slate grey · ΔE 25.3Teal · ΔE 29.2
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 17.38, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6D3C21
Analogous#216D62, #212C6D
Triadic#6D2152, #526D21
Split complementary#6D212C, #6D6221
Tetradic#62216D, #6D3C21, #2C6D21

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#81BAD9
Lighter +30%#5AA4CD
Lighter +20%#398DBB
Lighter +10%#2D6F94
Darker −10%#153546
Darker −20%#09171F
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0F577F
Less saturated −25%#334D5B

Channel breakdown

R33
G82
B109
Red33 (12.9%)
Green82 (32.2%)
Blue109 (42.7%)
Hue201.32°
Saturation (HSL)53.52%
Lightness27.84%
Dominant channelBlue
Hex per channelR 21 · G 52 · B 6D

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Every value on this page was computed from “21526d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.