Recognised as Colour
#40978D
- #40978D
- Cyan
- Dark
- Nearest: Dark cyan
#40978D is a cyan with RGB values 64, 151, 141 and HSL 173°, 40%, 42%. It is a dark colour, so black text on it reaches 6:1 contrast (AA for normal text). The nearest named colour is Dark cyan.
Colour values
#40978D#40978D
HEX#40978D
RGBrgb(64, 151, 141)
RGB (0–1)0.251, 0.5922, 0.5529
RGB percentages25.1%, 59.2%, 55.3%
HSLhsl(173.1, 40.5%, 42.2%)
HSV / HSBhsv(173.1, 57.6%, 59.2%)
CMYK57.6%, 0%, 6.6%, 40.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,233,101
CSS custom property--colour: #40978D;
Brightness & contrast
Relative luminance0.25146WCAG 2.x, 0 is black and 1 is white
Perceived brightness129.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.03:1
Contrast with white3.48:1WCAG normal text: Fail
Contrast with black6.03:1WCAG normal text: AA
Greyscale equivalent#848484
Inverted#BF6872
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.48:1WCAG large text: AA
Contrast with black, large text6.03:1WCAG large text: AAA
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#97404A
Analogous#409762, #407597
Triadic#8D4097, #978D40
Split complementary#974075, #976240
Tetradic#624097, #97404A, #759740
Tints, shades & saturation
Channel breakdown
R64
G151
B141
Red64 (25.1%)
Green151 (59.2%)
Blue141 (55.3%)
Hue173.1°
Saturation (HSL)40.47%
Lightness42.16%
Dominant channelGreen
Hex per channelR 40 · G 97 · B 8D
Keep nerding
Every link below is a page Nerdulator can generate from what it already knows about this value.
Nerdulate something else
Nothing in mind? Surprise me · today’s page