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Recognised as Colour

#308BFD

  • #308BFD
  • Blue
  • Dark
  • Nearest: Dodgerblue

#308BFD is a blue with RGB values 48, 139, 253 and HSL 213°, 98%, 59%. It is a dark colour, so black text on it reaches 6.2:1 contrast (AA for normal text). The nearest named colour is Dodgerblue.

Colour values

#308BFD#308BFD
HEX#308BFD
RGBrgb(48, 139, 253)
RGB (0–1)0.1882, 0.5451, 0.9922
RGB percentages18.8%, 54.5%, 99.2%
HSLhsl(213.4, 98.1%, 59%)
HSV / HSBhsv(213.4, 81%, 99.2%)
CMYK81%, 45.1%, 0%, 0.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,181,565
CSS custom property--colour: #308BFD;

Brightness & contrast

Relative luminance0.26185WCAG 2.x, 0 is black and 1 is white
Perceived brightness139 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.24:1
Contrast with white3.37:1WCAG normal text: Fail
Contrast with black6.24:1WCAG normal text: AA
Greyscale equivalent#808080
Inverted#CF7402

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#4D96FFno red cones; affects about 1% of men; ΔE 7.1 from the original
Deuteranopia#1883FBno green cones; the most common form, about 1% of men; ΔE 5 from the original
Tritanopia#00A6B8no blue cones; rare, and affects men and women equally; ΔE 61.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.37:1WCAG large text: AA
Contrast with black, large text6.24:1WCAG large text: AAA

Named colours

Dodgerblue · ΔE 3.8Cornflower blue · ΔE 15.9Royal blue · ΔE 16.5Slate blue · ΔE 26.7Medium purple · ΔE 27.4Medium slateblue · ΔE 28.2
Nearest named CSS colourDodgerblue (#1E90FF)ΔE 3.82, a close match
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FDA230
Analogous#30F2FD, #3C30FD
Triadic#FD308B, #8BFD30
Split complementary#FD3C30, #F2FD30
Tetradic#FD30F1, #FDA230, #30FD3C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FAFCFF
Lighter +30%#C8E0FE
Lighter +20%#95C4FE
Lighter +10%#63A7FD
Darker −10%#026FF8
Darker −20%#0259C5
Darker −30%#014293
Darker −40%#012B60
More saturated +25%#2E8BFF
Less saturated −25%#4A8EE3

Channel breakdown

R48
G139
B253
Red48 (18.8%)
Green139 (54.5%)
Blue253 (99.2%)
Hue213.37°
Saturation (HSL)98.09%
Lightness59.02%
Dominant channelBlue
Hex per channelR 30 · G 8B · B FD

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Every value on this page was computed from “308bfd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.