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Colour

#258DF3

  • #258DF3
  • Blue
  • Dark
  • Nearest: Dodgerblue

#258DF3 is a blue with RGB values 37, 141, 243 and HSL 210°, 90%, 55%. 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

#258DF3#258DF3
HEX#258DF3
RGBrgb(37, 141, 243)
RGB (0–1)0.1451, 0.5529, 0.9529
RGB percentages14.5%, 55.3%, 95.3%
HSLhsl(209.7, 89.6%, 54.9%)
HSV / HSBhsv(209.7, 84.8%, 95.3%)
CMYK84.8%, 42%, 0%, 4.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,461,171
CSS custom property--colour: #258DF3;

Brightness & contrast

Relative luminance0.25914WCAG 2.x, 0 is black and 1 is white
Perceived brightness137.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.18:1
Contrast with white3.4:1WCAG normal text: Fail
Contrast with black6.18:1WCAG normal text: AA
Greyscale equivalent#7E7E7E
Inverted#DA720C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5995F7no red cones; affects about 1% of men; ΔE 6.5 from the original
Deuteranopia#3283F1no green cones; the most common form, about 1% of men; ΔE 7.6 from the original
Tritanopia#00A5B4no blue cones; rare, and affects men and women equally; ΔE 55.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.4:1WCAG large text: AA
Contrast with black, large text6.18:1WCAG large text: AAA

Named colours

Dodgerblue · ΔE 5.1Cornflower blue · ΔE 10.7Royal blue · ΔE 22Steel blue · ΔE 29.9Medium purple · ΔE 30.6Slate blue · ΔE 31
Nearest named CSS colourDodgerblue (#1E90FF)ΔE 5.08, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#F38B25
Analogous#25F3F2, #2526F3
Triadic#F3258D, #8DF325
Split complementary#F32526, #F3F225
Tetradic#F225F3, #F38B25, #26F325

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E6F2FE
Lighter +30%#B6D9FB
Lighter +20%#86C0F8
Lighter +10%#55A6F6
Darker −10%#0C73D9
Darker −20%#095AA9
Darker −30%#074078
Darker −40%#042648
More saturated +25%#198DFF
Less saturated −25%#428DD6

Channel breakdown

R37
G141
B243
Red37 (14.5%)
Green141 (55.3%)
Blue243 (95.3%)
Hue209.71°
Saturation (HSL)89.57%
Lightness54.9%
Dominant channelBlue
Hex per channelR 25 · G 8D · B F3

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Every value on this page was computed from “258df3” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.