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Recognised as Colour

#011F23

  • #011F23
  • Cyan
  • Dark
  • Nearest: Black

#011F23 is a cyan with RGB values 1, 31, 35 and HSL 187°, 94%, 7%. It is a dark colour, so white text on it reaches 17.2:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#011F23#011F23
HEX#011F23
RGBrgb(1, 31, 35)
RGB (0–1)0.0039, 0.1216, 0.1373
RGB percentages0.4%, 12.2%, 13.7%
HSLhsl(187.1, 94.4%, 7.1%)
HSV / HSBhsv(187.1, 97.1%, 13.7%)
CMYK97.1%, 11.4%, 0%, 86.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer73,507
CSS custom property--colour: #011F23;

Brightness & contrast

Relative luminance0.01108WCAG 2.x, 0 is black and 1 is white
Perceived brightness26.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 17.19:1
Contrast with white17.19:1WCAG normal text: AAA
Contrast with black1.22:1WCAG normal text: Fail
Greyscale equivalent#191919
Inverted#FEE0DC

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#1B1D23no red cones; affects about 1% of men; ΔE 10.4 from the original
Deuteranopia#161A23no green cones; the most common form, about 1% of men; ΔE 10.4 from the original
Tritanopia#002120no blue cones; rare, and affects men and women equally; ΔE 4.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text17.19:1WCAG large text: AAA
Contrast with black, large text1.22:1WCAG large text: Fail

Named colours

Black · ΔE 14.9Dark slate grey · ΔE 21.6Dim grey · ΔE 36.3Teal · ΔE 43.1Slate grey · ΔE 43.8Gray · ΔE 45.1
Nearest named CSS colourBlack (#000000)ΔE 14.94, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#230501
Analogous#012316, #010E23
Triadic#23011F, #1F2301
Split complementary#23010E, #231601
Tetradic#160123, #230501, #0E2301

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#07CFE9
Lighter +30%#05A3B8
Lighter +20%#047786
Lighter +10%#024B55
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#002024
Less saturated −25%#051C1F

Channel breakdown

R1
G31
B35
Red1 (0.4%)
Green31 (12.2%)
Blue35 (13.7%)
Hue187.06°
Saturation (HSL)94.44%
Lightness7.06%
Dominant channelBlue
Hex per channelR 01 · G 1F · B 23

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Every value on this page was computed from “011f23” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.