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Recognised as Colour

#646A00

  • #646A00
  • Yellow
  • Dark
  • Nearest: Olive

#646A00 is a yellow with RGB values 100, 106, 0 and HSL 63°, 100%, 21%. It is a dark colour, so white text on it reaches 5.8:1 contrast (AA for normal text). The nearest named colour is Olive.

Colour values

#646A00#646A00
HEX#646A00
RGBrgb(100, 106, 0)
RGB (0–1)0.3922, 0.4157, 0
RGB percentages39.2%, 41.6%, 0%
HSLhsl(63.4, 100%, 20.8%)
HSV / HSBhsv(63.4, 100%, 41.6%)
CMYK5.7%, 0%, 100%, 58.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,580,736
CSS custom property--colour: #646A00;

Brightness & contrast

Relative luminance0.13017WCAG 2.x, 0 is black and 1 is white
Perceived brightness97.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.83:1
Contrast with white5.83:1WCAG normal text: AA
Contrast with black3.6:1WCAG normal text: Fail
Greyscale equivalent#616161
Inverted#9B95FF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#736400no red cones; affects about 1% of men; ΔE 10.7 from the original
Deuteranopia#73660Fno green cones; the most common form, about 1% of men; ΔE 10.3 from the original
Tritanopia#6C6359no blue cones; rare, and affects men and women equally; ΔE 44.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text5.83:1WCAG large text: AAA
Contrast with black, large text3.6:1WCAG large text: AA

Named colours

Olive · ΔE 12Olivedrab · ΔE 18.4Dark olivegreen · ΔE 18.9Dark green · ΔE 30.7Dark goldenrod · ΔE 32.2Dark khaki · ΔE 32.5
Nearest named CSS colourOlive (#808000)ΔE 12.01, a distinctly different colour
Hue familyyellow
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#06006A
Analogous#6A3B00, #2F6A00
Triadic#00646A, #6A0064
Split complementary#002F6A, #3B006A
Tetradic#006A3B, #06006A, #6A002F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F4FF37
Lighter +30%#F1FF04
Lighter +20%#C4D000
Lighter +10%#949D00
Darker −10%#343700
Darker −20%#040400
Darker −30%#000000
Darker −40%#000000
More saturated +25%#646A00
Less saturated −25%#585D0D

Channel breakdown

R100
G106
B0
Red100 (39.2%)
Green106 (41.6%)
Blue0 (0%)
Hue63.4°
Saturation (HSL)100%
Lightness20.78%
Dominant channelGreen
Hex per channelR 64 · G 6A · B 00

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Every value on this page was computed from “646a00” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.