Nerdulator> put something in

Recognised as Colour

#15554B

  • #15554B
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#15554B is a cyan with RGB values 21, 85, 75 and HSL 171°, 60%, 21%. 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

#15554B#15554B
HEX#15554B
RGBrgb(21, 85, 75)
RGB (0–1)0.0824, 0.3333, 0.2941
RGB percentages8.2%, 33.3%, 29.4%
HSLhsl(170.6, 60.4%, 20.8%)
HSV / HSBhsv(170.6, 75.3%, 33.3%)
CMYK75.3%, 0%, 11.8%, 66.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,398,091
CSS custom property--colour: #15554B;

Brightness & contrast

Relative luminance0.07164WCAG 2.x, 0 is black and 1 is white
Perceived brightness70.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.63:1
Contrast with white8.63:1WCAG normal text: AAA
Contrast with black2.43:1WCAG normal text: Fail
Greyscale equivalent#474747
Inverted#EAAAB4

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#51504Bno red cones; affects about 1% of men; ΔE 22.1 from the original
Deuteranopia#48494Cno green cones; the most common form, about 1% of men; ΔE 22.9 from the original
Tritanopia#005752no blue cones; rare, and affects men and women equally; ΔE 3.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.63:1WCAG large text: AAA
Contrast with black, large text2.43:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 11.5Teal · ΔE 19.3Dark cyan · ΔE 23.4Dim grey · ΔE 25.6Cadetblue · ΔE 30.1Slate grey · ΔE 30.9
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 11.46, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#55151F
Analogous#15552B, #153F55
Triadic#4B1555, #554B15
Split complementary#55153F, #552B15
Tetradic#2B1555, #55151F, #3F5515

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#5FD7C5
Lighter +30%#36CDB6
Lighter +20%#29A793
Lighter +10%#1F7E6F
Darker −10%#0B2C27
Darker −20%#010303
Darker −30%#000000
Darker −40%#000000
More saturated +25%#086254
Less saturated −25%#224842

Channel breakdown

R21
G85
B75
Red21 (8.2%)
Green85 (33.3%)
Blue75 (29.4%)
Hue170.63°
Saturation (HSL)60.38%
Lightness20.78%
Dominant channelGreen
Hex per channelR 15 · G 55 · B 4B

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 “15554b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.