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Recognised as Colour

#28999B

  • #28999B
  • Cyan
  • Dark
  • Nearest: Dark cyan

#28999B is a cyan with RGB values 40, 153, 155 and HSL 181°, 59%, 38%. It is a dark colour, so black text on it reaches 6.1:1 contrast (AA for normal text). The nearest named colour is Dark cyan.

Colour values

#28999B#28999B
HEX#28999B
RGBrgb(40, 153, 155)
RGB (0–1)0.1569, 0.6, 0.6078
RGB percentages15.7%, 60%, 60.8%
HSLhsl(181, 59%, 38.2%)
HSV / HSBhsv(181, 74.2%, 60.8%)
CMYK74.2%, 1.3%, 0%, 39.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,660,763
CSS custom property--colour: #28999B;

Brightness & contrast

Relative luminance0.256WCAG 2.x, 0 is black and 1 is white
Perceived brightness130.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.12:1
Contrast with white3.43:1WCAG normal text: Fail
Contrast with black6.12:1WCAG normal text: AA
Greyscale equivalent#818181
Inverted#D76664

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#8E929Bno red cones; affects about 1% of men; ΔE 30.3 from the original
Deuteranopia#7E859Cno green cones; the most common form, about 1% of men; ΔE 32.1 from the original
Tritanopia#009E99no blue cones; rare, and affects men and women equally; ΔE 6.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.43:1WCAG large text: AA
Contrast with black, large text6.12:1WCAG large text: AAA

Named colours

Dark cyan · ΔE 5.7Teal · ΔE 9.5Cadetblue · ΔE 10.6Light seagreen · ΔE 12.1Medium turquoise · ΔE 20.9Dark turquoise · ΔE 20.9
Nearest named CSS colourDark cyan (#008B8B)ΔE 5.67, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#9B2A28
Analogous#289B63, #28609B
Triadic#9B2899, #999B28
Split complementary#9B2860, #9B6328
Tetradic#63289B, #9B2A28, #609B28

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A7E7E8
Lighter +30%#7EDCDE
Lighter +20%#56D1D3
Lighter +10%#32C1C4
Darker −10%#1E7172
Darker −20%#13494A
Darker −30%#092121
Darker −40%#000000
More saturated +25%#10B1B3
Less saturated −25%#408183

Channel breakdown

R40
G153
B155
Red40 (15.7%)
Green153 (60%)
Blue155 (60.8%)
Hue181.04°
Saturation (HSL)58.97%
Lightness38.24%
Dominant channelBlue
Hex per channelR 28 · G 99 · B 9B

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Every value on this page was computed from “28999b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.