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Recognised as Colour

#002580

  • #002580
  • Blue
  • Dark
  • Nearest: Midnight blue

#002580 is a blue with RGB values 0, 37, 128 and HSL 223°, 100%, 25%. It is a dark colour, so white text on it reaches 13.3:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#002580#002580
HEX#002580
RGBrgb(0, 37, 128)
RGB (0–1)0, 0.1451, 0.502
RGB percentages0%, 14.5%, 50.2%
HSLhsl(222.7, 100%, 25.1%)
HSV / HSBhsv(222.7, 100%, 50.2%)
CMYK100%, 71.1%, 0%, 49.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer9,600
CSS custom property--colour: #002580;

Brightness & contrast

Relative luminance0.02882WCAG 2.x, 0 is black and 1 is white
Perceived brightness51.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.32:1
Contrast with white13.32:1WCAG normal text: AAA
Contrast with black1.58:1WCAG normal text: Fail
Greyscale equivalent#242424
Inverted#FFDA7F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003583no red cones; affects about 1% of men; ΔE 12.6 from the original
Deuteranopia#002A7Eno green cones; the most common form, about 1% of men; ΔE 5.5 from the original
Tritanopia#003F4Fno 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 text13.32:1WCAG large text: AAA
Contrast with black, large text1.58:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 6.5Dark slateblue · ΔE 16.4Rebecca purple · ΔE 20.8Navy · ΔE 23Indigo · ΔE 23.4Dark blue · ΔE 27.1
Nearest named CSS colourMidnight blue (#191970)ΔE 6.51, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#805B00
Analogous#006580, #1B0080
Triadic#800025, #258000
Split complementary#801B00, #658000
Tetradic#800065, #805B00, #00801B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#4D80FF
Lighter +30%#1A5CFF
Lighter +20%#0042E6
Lighter +10%#0034B3
Darker −10%#00164D
Darker −20%#00081A
Darker −30%#000000
Darker −40%#000000
More saturated +25%#002580
Less saturated −25%#102C70

Channel breakdown

R0
G37
B128
Red0 (0%)
Green37 (14.5%)
Blue128 (50.2%)
Hue222.66°
Saturation (HSL)100%
Lightness25.1%
Dominant channelBlue
Hex per channelR 00 · G 25 · B 80

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Every value on this page was computed from “hex 002580” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.