Recognised as Colour

#1B5A88

#1B5A88
Blue
Dark
Nearest: Steel blue

#1B5A88 is a blue with RGB values 27, 90, 136 and HSL 205°, 67%, 32%. It is a dark colour, so white text on it reaches 7.3:1 contrast (AAA for normal text). The nearest named colour is Steel blue.

Colour values

#1B5A88#1B5A88

HEX#1B5A88

RGBrgb(27, 90, 136)

RGB (0–1)0.1059, 0.3529, 0.5333

RGB percentages10.6%, 35.3%, 53.3%

HSLhsl(205.3, 66.9%, 32%)

HSV / HSBhsv(205.3, 80.1%, 53.3%)

CMYK80.1%, 33.8%, 0%, 46.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,792,648

CSS custom property--colour: #1B5A88;

Brightness & contrast

Relative luminance0.09323WCAG 2.x, 0 is black and 1 is white

Perceived brightness84.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.33:1

Contrast with white7.33:1WCAG normal text: AAA

Contrast with black2.86:1WCAG normal text: Fail

Greyscale equivalent#505050

Inverted#E4A577

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#455C8Ano red cones; affects about 1% of men; ΔE 8.5 from the original

Deuteranopia#355287no green cones; the most common form, about 1% of men; ΔE 9.5 from the original

Tritanopia#00656Ano blue cones; rare, and affects men and women equally; ΔE 29.2 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text7.33:1WCAG large text: AAA

Contrast with black, large text2.86:1WCAG large text: Fail

Named colours

Steel blue · ΔE 16 Slate grey · ΔE 26.2 Light slate grey · ΔE 27.9 Dark slate grey · ΔE 29.4 Dark slateblue · ΔE 31.3 Dim grey · ΔE 32.3

Nearest named CSS colourSteel blue (#4682B4)ΔE 15.96, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#88491B

Analogous#1B887F, #1B2488

Triadic#881B5A, #5A881B

Split complementary#881B24, #887F1B

Tetradic#7F1B88, #88491B, #24881B

Tints, shades & saturation

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

Lighter +40%#88BFE7

Lighter +30%#5DA8DF

Lighter +20%#3391D6

Lighter +10%#2376B3

Darker −10%#133E5D

Darker −20%#0A2233

Darker −30%#020608

Darker −40%#000000

More saturated +25%#075D9C

Less saturated −25%#2F5774

Channel breakdown

R27

G90

B136

Red27 (10.6%)

Green90 (35.3%)

Blue136 (53.3%)

Hue205.32°

Saturation (HSL)66.87%

Lightness31.96%

Dominant channelBlue

Hex per channelR 1B · G 5A · B 88

Keep nerding

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

#1B5A88

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

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