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Colour

#4099BD

  • #4099BD
  • Cyan
  • Dark
  • Nearest: Steel blue

#4099BD is a cyan with RGB values 64, 153, 189 and HSL 197°, 49%, 50%. It is a dark colour, so black text on it reaches 6.5:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#4099BD#4099BD
HEX#4099BD
RGBrgb(64, 153, 189)
RGB (0–1)0.251, 0.6, 0.7412
RGB percentages25.1%, 60%, 74.1%
HSLhsl(197.3, 49.4%, 49.6%)
HSV / HSBhsv(197.3, 66.1%, 74.1%)
CMYK66.1%, 19%, 0%, 25.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,233,661
CSS custom property--colour: #4099BD;

Brightness & contrast

Relative luminance0.27547WCAG 2.x, 0 is black and 1 is white
Perceived brightness138 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.51:1
Contrast with white3.23:1WCAG normal text: Fail
Contrast with black6.51:1WCAG normal text: AA
Greyscale equivalent#898989
Inverted#BF6642

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#8696BFno red cones; affects about 1% of men; ΔE 19.5 from the original
Deuteranopia#758ABDno green cones; the most common form, about 1% of men; ΔE 20.7 from the original
Tritanopia#00A3A5no blue cones; rare, and affects men and women equally; ΔE 24.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.23:1WCAG large text: AA
Contrast with black, large text6.51:1WCAG large text: AAA

Named colours

Steel blue · ΔE 14.3Cadetblue · ΔE 19.6Light slate grey · ΔE 20.4Sky blue · ΔE 20.4Light skyblue · ΔE 20.8Deep skyblue · ΔE 20.9
Nearest named CSS colourSteel blue (#4682B4)ΔE 14.31, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BD6440
Analogous#40BDA2, #405BBD
Triadic#BD4099, #99BD40
Split complementary#BD405B, #BDA340
Tetradic#A240BD, #BD6440, #5ABD40

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D7EAF2
Lighter +30%#B1D6E5
Lighter +20%#8BC2D8
Lighter +10%#65AECB
Darker −10%#337A97
Darker −20%#265B71
Darker −30%#193C4B
Darker −40%#0C1E25
More saturated +25%#20A6DD
Less saturated −25%#608C9D

Channel breakdown

R64
G153
B189
Red64 (25.1%)
Green153 (60%)
Blue189 (74.1%)
Hue197.28°
Saturation (HSL)49.41%
Lightness49.61%
Dominant channelBlue
Hex per channelR 40 · G 99 · B BD

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Every value on this page was computed from “4099bd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.