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Recognised as Colour

#0B403F

  • #0B403F
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#0B403F is a cyan with RGB values 11, 64, 63 and HSL 179°, 71%, 15%. It is a dark colour, so white text on it reaches 11.5:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#0B403F#0B403F
HEX#0B403F
RGBrgb(11, 64, 63)
RGB (0–1)0.0431, 0.251, 0.2471
RGB percentages4.3%, 25.1%, 24.7%
HSLhsl(178.9, 70.7%, 14.7%)
HSV / HSBhsv(178.9, 82.8%, 25.1%)
CMYK82.8%, 0%, 1.6%, 74.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer737,343
CSS custom property--colour: #0B403F;

Brightness & contrast

Relative luminance0.04097WCAG 2.x, 0 is black and 1 is white
Perceived brightness53.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.54:1
Contrast with white11.54:1WCAG normal text: AAA
Contrast with black1.82:1WCAG normal text: Fail
Greyscale equivalent#353535
Inverted#F4BFC0

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3B3C3Fno red cones; affects about 1% of men; ΔE 17.2 from the original
Deuteranopia#34373Fno green cones; the most common form, about 1% of men; ΔE 17.5 from the original
Tritanopia#004240no blue cones; rare, and affects men and women equally; ΔE 2.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.54:1WCAG large text: AAA
Contrast with black, large text1.82:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 8.8Dim grey · ΔE 26.7Teal · ΔE 27.5Black · ΔE 29.5Dark cyan · ΔE 31.8Slate grey · ΔE 32.9
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 8.82, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#400B0C
Analogous#0B4025, #0B2640
Triadic#3F0B40, #403F0B
Split complementary#400B26, #40250B
Tetradic#250B40, #400B0C, #26400B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#3ADDDA
Lighter +30%#21C3C0
Lighter +20%#1A9795
Lighter +10%#126C6A
Darker −10%#041414
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#024948
Less saturated −25%#143736

Channel breakdown

R11
G64
B63
Red11 (4.3%)
Green64 (25.1%)
Blue63 (24.7%)
Hue178.87°
Saturation (HSL)70.67%
Lightness14.71%
Dominant channelGreen
Hex per channelR 0B · G 40 · B 3F

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Every value on this page was computed from “0b403f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.