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Recognised as Colour

#12558E

  • #12558E
  • Blue
  • Dark
  • Nearest: Steel blue

#12558E is a blue with RGB values 18, 85, 142 and HSL 208°, 78%, 31%. It is a dark colour, so white text on it reaches 7.7:1 contrast (AAA for normal text). The nearest named colour is Steel blue.

Colour values

#12558E#12558E
HEX#12558E
RGBrgb(18, 85, 142)
RGB (0–1)0.0706, 0.3333, 0.5569
RGB percentages7.1%, 33.3%, 55.7%
HSLhsl(207.6, 77.5%, 31.4%)
HSV / HSBhsv(207.6, 87.3%, 55.7%)
CMYK87.3%, 40.1%, 0%, 44.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,201,550
CSS custom property--colour: #12558E;

Brightness & contrast

Relative luminance0.08579WCAG 2.x, 0 is black and 1 is white
Perceived brightness81.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.73:1
Contrast with white7.73:1WCAG normal text: AAA
Contrast with black2.72:1WCAG normal text: Fail
Greyscale equivalent#4B4B4B
Inverted#EDAA71

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#395990no red cones; affects about 1% of men; ΔE 5.8 from the original
Deuteranopia#254E8Dno green cones; the most common form, about 1% of men; ΔE 7 from the original
Tritanopia#00636Ano blue cones; rare, and affects men and women equally; ΔE 35.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.73:1WCAG large text: AAA
Contrast with black, large text2.72:1WCAG large text: Fail

Named colours

Steel blue · ΔE 19Dark slateblue · ΔE 24.9Cornflower blue · ΔE 30.3Slate grey · ΔE 32.2Light slate grey · ΔE 33.6Dark slate grey · ΔE 36.3
Nearest named CSS colourSteel blue (#4682B4)ΔE 19, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8E4B12
Analogous#128E89, #12178E
Triadic#8E1255, #558E12
Split complementary#8E1217, #8E8912
Tetradic#89128E, #8E4B12, #178E12

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7DBBEF
Lighter +30%#50A3E9
Lighter +20%#238BE3
Lighter +10%#1870BB
Darker −10%#0C3A61
Darker −20%#071F33
Darker −30%#010406
Darker −40%#000000
More saturated +25%#0056A0
Less saturated −25%#26537A

Channel breakdown

R18
G85
B142
Red18 (7.1%)
Green85 (33.3%)
Blue142 (55.7%)
Hue207.58°
Saturation (HSL)77.5%
Lightness31.37%
Dominant channelBlue
Hex per channelR 12 · G 55 · B 8E

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Every value on this page was computed from “12558e” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.