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Recognised as Colour

#01515B

  • #01515B
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#01515B is a cyan with RGB values 1, 81, 91 and HSL 187°, 98%, 18%. It is a dark colour, so white text on it reaches 9:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#01515B#01515B
HEX#01515B
RGBrgb(1, 81, 91)
RGB (0–1)0.0039, 0.3176, 0.3569
RGB percentages0.4%, 31.8%, 35.7%
HSLhsl(186.7, 97.8%, 18%)
HSV / HSBhsv(186.7, 98.9%, 35.7%)
CMYK98.9%, 11%, 0%, 64.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer86,363
CSS custom property--colour: #01515B;

Brightness & contrast

Relative luminance0.06647WCAG 2.x, 0 is black and 1 is white
Perceived brightness69.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.02:1
Contrast with white9.02:1WCAG normal text: AAA
Contrast with black2.33:1WCAG normal text: Fail
Greyscale equivalent#414141
Inverted#FEAEA4

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#484D5Cno red cones; affects about 1% of men; ΔE 19.1 from the original
Deuteranopia#3D465Bno green cones; the most common form, about 1% of men; ΔE 19.3 from the original
Tritanopia#005654no blue cones; rare, and affects men and women equally; ΔE 8.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.02:1WCAG large text: AAA
Contrast with black, large text2.33:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 9.8Teal · ΔE 21.1Dim grey · ΔE 24.8Dark cyan · ΔE 25.3Slate grey · ΔE 26.6Light slate grey · ΔE 29.1
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 9.85, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5B0B01
Analogous#015B38, #01245B
Triadic#5B0151, #515B01
Split complementary#5B0124, #5B3801
Tetradic#38015B, #5B0B01, #245B01

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#2BE5FD
Lighter +30%#03D8F2
Lighter +20%#02ABC0
Lighter +10%#027E8D
Darker −10%#002429
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00525C
Less saturated −25%#0C4850

Channel breakdown

R1
G81
B91
Red1 (0.4%)
Green81 (31.8%)
Blue91 (35.7%)
Hue186.67°
Saturation (HSL)97.83%
Lightness18.04%
Dominant channelBlue
Hex per channelR 01 · G 51 · B 5B

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Every value on this page was computed from “01515b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.