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Recognised as Colour

#2A307F

  • #2A307F
  • Blue
  • Dark
  • Nearest: Dark slateblue

#2A307F is a blue with RGB values 42, 48, 127 and HSL 236°, 50%, 33%. It is a dark colour, so white text on it reaches 11.5:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#2A307F#2A307F
HEX#2A307F
RGBrgb(42, 48, 127)
RGB (0–1)0.1647, 0.1882, 0.498
RGB percentages16.5%, 18.8%, 49.8%
HSLhsl(235.8, 50.3%, 33.1%)
HSV / HSBhsv(235.8, 66.9%, 49.8%)
CMYK66.9%, 62.2%, 0%, 50.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,764,927
CSS custom property--colour: #2A307F;

Brightness & contrast

Relative luminance0.04138WCAG 2.x, 0 is black and 1 is white
Perceived brightness61 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.49:1
Contrast with white11.49:1WCAG normal text: AAA
Contrast with black1.83:1WCAG normal text: Fail
Greyscale equivalent#343434
Inverted#D5CF80

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003D82no red cones; affects about 1% of men; ΔE 12.7 from the original
Deuteranopia#00367Dno green cones; the most common form, about 1% of men; ΔE 9.5 from the original
Tritanopia#004452no blue cones; rare, and affects men and women equally; ΔE 49.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.49:1WCAG large text: AAA
Contrast with black, large text1.83:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 7.7Midnight blue · ΔE 11.8Rebecca purple · ΔE 20.5Slate blue · ΔE 27.1Indigo · ΔE 28.6Royal blue · ΔE 30.9
Nearest named CSS colourDark slateblue (#483D8B)ΔE 7.74, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7F792A
Analogous#2A5A7F, #4E2A7F
Triadic#7F2A30, #307F2A
Split complementary#7F4E2A, #5A7F2A
Tetradic#7F2A5B, #7F792A, #2A7F4E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#989DDD
Lighter +30%#7278D0
Lighter +20%#4B54C4
Lighter +10%#373EA5
Darker −10%#1D2259
Darker −20%#111332
Darker −30%#04050C
Darker −40%#000000
More saturated +25%#151E94
Less saturated −25%#3F426A

Channel breakdown

R42
G48
B127
Red42 (16.5%)
Green48 (18.8%)
Blue127 (49.8%)
Hue235.76°
Saturation (HSL)50.3%
Lightness33.14%
Dominant channelBlue
Hex per channelR 2A · G 30 · B 7F

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Every value on this page was computed from “2a307f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.