Recognised as Colour

#258BFF

#258BFF
Blue
Dark
Nearest: Dodgerblue

#258BFF is a blue with RGB values 37, 139, 255 and HSL 212°, 100%, 57%. 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

#258BFF#258BFF

HEX#258BFF

RGBrgb(37, 139, 255)

RGB (0–1)0.1451, 0.5451, 1

RGB percentages14.5%, 54.5%, 100%

HSLhsl(211.9, 100%, 57.3%)

HSV / HSBhsv(211.9, 85.5%, 100%)

CMYK85.5%, 45.5%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,460,671

CSS custom property--colour: #258BFF;

Brightness & contrast

Relative luminance0.26079WCAG 2.x, 0 is black and 1 is white

Perceived brightness138.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.22:1

Contrast with white3.38:1WCAG normal text: Fail

Contrast with black6.22:1WCAG normal text: AA

Greyscale equivalent#7E7E7E

Inverted#DA7400

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#4B96FFno red cones; affects about 1% of men; ΔE 8.1 from the original

Deuteranopia#0383FDno green cones; the most common form, about 1% of men; ΔE 5.1 from the original

Tritanopia#00A7B9no blue cones; rare, and affects men and women equally; ΔE 62.9 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text3.38:1WCAG large text: AA

Contrast with black, large text6.22:1WCAG large text: AAA

Named colours

Dodgerblue · ΔE 4.2 Royal blue · ΔE 16.5 Cornflower blue · ΔE 17.1 Slate blue · ΔE 27.1 Medium purple · ΔE 28.1 Medium slateblue · ΔE 28.3

Nearest named CSS colourDodgerblue (#1E90FF)ΔE 4.21, a close match

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#FF9925

Analogous#25F8FF, #2C25FF

Triadic#FF258B, #8BFF25

Split complementary#FF2C25, #F8FF25

Tetradic#FF25F8, #FF9925, #25FF2C

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#F1F8FF

Lighter +30%#BEDCFF

Lighter +20%#8BC1FF

Lighter +10%#58A6FF

Darker −10%#0071F1

Darker −20%#0059BE

Darker −30%#00418B

Darker −40%#002958

More saturated +25%#258BFF

Less saturated −25%#408DE4

Channel breakdown

R37

G139

B255

Red37 (14.5%)

Green139 (54.5%)

Blue255 (100%)

Hue211.93°

Saturation (HSL)100%

Lightness57.25%

Dominant channelBlue

Hex per channelR 25 · G 8B · B FF

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

#258BFF

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

Nerdulate something else