Nerdulator> put something in

Recognised as Colour

#21553D

  • #21553D
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#21553D is a cyan with RGB values 33, 85, 61 and HSL 152°, 44%, 23%. It is a dark colour, so white text on it reaches 8.6:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#21553D#21553D
HEX#21553D
RGBrgb(33, 85, 61)
RGB (0–1)0.1294, 0.3333, 0.2392
RGB percentages12.9%, 33.3%, 23.9%
HSLhsl(152.3, 44.1%, 23.1%)
HSV / HSBhsv(152.3, 61.2%, 33.3%)
CMYK61.2%, 0%, 28.2%, 66.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,184,509
CSS custom property--colour: #21553D;

Brightness & contrast

Relative luminance0.07157WCAG 2.x, 0 is black and 1 is white
Perceived brightness70.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.64:1
Contrast with white8.64:1WCAG normal text: AAA
Contrast with black2.43:1WCAG normal text: Fail
Greyscale equivalent#484848
Inverted#DEAAC2

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#544F3Cno red cones; affects about 1% of men; ΔE 22.7 from the original
Deuteranopia#4C4A3Eno green cones; the most common form, about 1% of men; ΔE 22.3 from the original
Tritanopia#0C554Eno blue cones; rare, and affects men and women equally; ΔE 10.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.64:1WCAG large text: AAA
Contrast with black, large text2.43:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 17.5Teal · ΔE 24.2Dark olivegreen · ΔE 24.4Sea green · ΔE 27.4Dark cyan · ΔE 27.7Dim grey · ΔE 28.2
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 17.52, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#552139
Analogous#215523, #215355
Triadic#3D2155, #553D21
Split complementary#552153, #552321
Tetradic#232155, #552139, #535521

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#78CAA4
Lighter +30%#53BC8C
Lighter +20%#3E9E72
Lighter +10%#2F7A57
Darker −10%#133023
Darker −20%#040C08
Darker −30%#000000
Darker −40%#000000
More saturated +25%#12643E
Less saturated −25%#30463C

Channel breakdown

R33
G85
B61
Red33 (12.9%)
Green85 (33.3%)
Blue61 (23.9%)
Hue152.31°
Saturation (HSL)44.07%
Lightness23.14%
Dominant channelGreen
Hex per channelR 21 · G 55 · B 3D

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 “21553d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.