Colour

#10171E

#10171E
Blue
Dark
Nearest: Black

#10171E is a blue with RGB values 16, 23, 30 and HSL 210°, 30%, 9%. It is a dark colour, so white text on it reaches 18.1:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#10171E#10171E

HEX#10171E

RGBrgb(16, 23, 30)

RGB (0–1)0.0627, 0.0902, 0.1176

RGB percentages6.3%, 9%, 11.8%

HSLhsl(210, 30.4%, 9%)

HSV / HSBhsv(210, 46.7%, 11.8%)

CMYK46.7%, 23.3%, 0%, 88.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,054,494

CSS custom property--colour: #10171E;

Brightness & contrast

Relative luminance0.00817WCAG 2.x, 0 is black and 1 is white

Perceived brightness22.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 18.05:1

Contrast with white18.05:1WCAG normal text: AAA

Contrast with black1.16:1WCAG normal text: Fail

Greyscale equivalent#161616

Inverted#EFE8E1

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#14171Eno red cones; affects about 1% of men; ΔE 1.7 from the original

Deuteranopia#13161Eno green cones; the most common form, about 1% of men; ΔE 1.9 from the original

Tritanopia#0C1919no blue cones; rare, and affects men and women equally; ΔE 6 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text18.05:1WCAG large text: AAA

Contrast with black, large text1.16:1WCAG large text: Fail

Named colours

Black · ΔE 9.5 Dark slate grey · ΔE 26.3 Dim grey · ΔE 37.5 Slate grey · ΔE 45.7 Gray · ΔE 46.6 Light slate grey · ΔE 48.8

Nearest named CSS colourBlack (#000000)ΔE 9.51, clearly different but related

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#1E1710

Analogous#101E1E, #10101E

Triadic#1E1017, #171E10

Split complementary#1E1010, #1E1E10

Tetradic#1E101E, #1E1710, #101E10

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#577DA3

Lighter +30%#456382

Lighter +20%#334A61

Lighter +10%#22313F

Darker −10%#000000

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#0A1724

Less saturated −25%#161718

Channel breakdown

R16

G23

B30

Red16 (6.3%)

Green23 (9%)

Blue30 (11.8%)

Hue210°

Saturation (HSL)30.43%

Lightness9.02%

Dominant channelBlue

Hex per channelR 10 · G 17 · B 1E

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

#10171E

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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