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Recognised as Colour

#1981B5

  • #1981B5
  • Blue
  • Dark
  • Nearest: Steel blue

#1981B5 is a blue with RGB values 25, 129, 181 and HSL 200°, 76%, 40%. It is a dark colour, so black text on it reaches 4.8:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#1981B5#1981B5
HEX#1981B5
RGBrgb(25, 129, 181)
RGB (0–1)0.098, 0.5059, 0.7098
RGB percentages9.8%, 50.6%, 71%
HSLhsl(200, 75.7%, 40.4%)
HSV / HSBhsv(200, 86.2%, 71%)
CMYK86.2%, 28.7%, 0%, 29%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,671,605
CSS custom property--colour: #1981B5;

Brightness & contrast

Relative luminance0.19243WCAG 2.x, 0 is black and 1 is white
Perceived brightness117 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.85:1
Contrast with white4.33:1WCAG normal text: Fail
Contrast with black4.85:1WCAG normal text: AA
Greyscale equivalent#6F6F6F
Inverted#E67E4A

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6881B7no red cones; affects about 1% of men; ΔE 15.4 from the original
Deuteranopia#5373B4no green cones; the most common form, about 1% of men; ΔE 17.3 from the original
Tritanopia#008E93no blue cones; rare, and affects men and women equally; ΔE 31.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.33:1WCAG large text: AA
Contrast with black, large text4.85:1WCAG large text: AAA

Named colours

Steel blue · ΔE 6.2Deep skyblue · ΔE 24.3Light slate grey · ΔE 25.6Slate grey · ΔE 25.7Cornflower blue · ΔE 25.8Light skyblue · ΔE 29.6
Nearest named CSS colourSteel blue (#4682B4)ΔE 6.16, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B54D19
Analogous#19B59B, #1933B5
Triadic#B51981, #81B519
Split complementary#B51933, #B59B19
Tetradic#9B19B5, #B54D19, #33B519

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A7DAF3
Lighter +30%#7AC7ED
Lighter +20%#4EB3E6
Lighter +10%#21A0E0
Darker −10%#136188
Darker −20%#0D415B
Darker −30%#06212F
Darker −40%#000102
More saturated +25%#0089CE
Less saturated −25%#33789B

Channel breakdown

R25
G129
B181
Red25 (9.8%)
Green129 (50.6%)
Blue181 (71%)
Hue200°
Saturation (HSL)75.73%
Lightness40.39%
Dominant channelBlue
Hex per channelR 19 · G 81 · B B5

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Every value on this page was computed from “1981b5” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.