Nerdulator> put something in

Recognised as Colour

#21798C

  • #21798C
  • Cyan
  • Dark
  • Nearest: Teal

#21798C is a cyan with RGB values 33, 121, 140 and HSL 191°, 62%, 34%. It is a dark colour, so white text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Teal.

Colour values

#21798C#21798C
HEX#21798C
RGBrgb(33, 121, 140)
RGB (0–1)0.1294, 0.4745, 0.549
RGB percentages12.9%, 47.5%, 54.9%
HSLhsl(190.7, 61.8%, 33.9%)
HSV / HSBhsv(190.7, 76.4%, 54.9%)
CMYK76.4%, 13.6%, 0%, 45.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,193,804
CSS custom property--colour: #21798C;

Brightness & contrast

Relative luminance0.15892WCAG 2.x, 0 is black and 1 is white
Perceived brightness105.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.03:1
Contrast with white5.03:1WCAG normal text: AA
Contrast with black4.18:1WCAG normal text: Fail
Greyscale equivalent#686868
Inverted#DE8673

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6C758Dno red cones; affects about 1% of men; ΔE 21.3 from the original
Deuteranopia#5D6A8Cno green cones; the most common form, about 1% of men; ΔE 22.6 from the original
Tritanopia#00807Fno blue cones; rare, and affects men and women equally; ΔE 14.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.03:1WCAG large text: AAA
Contrast with black, large text4.18:1WCAG large text: AA

Named colours

Teal · ΔE 13.8Dark cyan · ΔE 15.8Cadetblue · ΔE 17.6Slate grey · ΔE 18.9Light slate grey · ΔE 19.8Steel blue · ΔE 21.3
Nearest named CSS colourTeal (#008080)ΔE 13.83, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8C3421
Analogous#218C69, #21448C
Triadic#8C2179, #798C21
Split complementary#8C2144, #8C6921
Tetradic#69218C, #8C3421, #448C21

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#93D7E6
Lighter +30%#6AC8DC
Lighter +20%#41B8D2
Lighter +10%#2B9DB5
Darker −10%#175563
Darker −20%#0E3239
Darker −30%#040E10
Darker −40%#000000
More saturated +25%#0B87A2
Less saturated −25%#376B76

Channel breakdown

R33
G121
B140
Red33 (12.9%)
Green121 (47.5%)
Blue140 (54.9%)
Hue190.65°
Saturation (HSL)61.85%
Lightness33.92%
Dominant channelBlue
Hex per channelR 21 · G 79 · 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 “21798c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.