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Colour

#17298A

  • #17298A
  • Blue
  • Dark
  • Nearest: Midnight blue

#17298A is a blue with RGB values 23, 41, 138 and HSL 231°, 71%, 32%. It is a dark colour, so white text on it reaches 12.2:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#17298A#17298A
HEX#17298A
RGBrgb(23, 41, 138)
RGB (0–1)0.0902, 0.1608, 0.5412
RGB percentages9%, 16.1%, 54.1%
HSLhsl(230.6, 71.4%, 31.6%)
HSV / HSBhsv(230.6, 83.3%, 54.1%)
CMYK83.3%, 70.3%, 0%, 45.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,517,962
CSS custom property--colour: #17298A;

Brightness & contrast

Relative luminance0.03603WCAG 2.x, 0 is black and 1 is white
Perceived brightness57.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.21:1
Contrast with white12.21:1WCAG normal text: AAA
Contrast with black1.72:1WCAG normal text: Fail
Greyscale equivalent#2C2C2C
Inverted#E8D675

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003B8Dno red cones; affects about 1% of men; ΔE 14.6 from the original
Deuteranopia#003088no green cones; the most common form, about 1% of men; ΔE 7.6 from the original
Tritanopia#004456no blue cones; rare, and affects men and women equally; ΔE 58.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text12.21:1WCAG large text: AAA
Contrast with black, large text1.72:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 8.8Dark slateblue · ΔE 16.6Rebecca purple · ΔE 18Indigo · ΔE 20.9Navy · ΔE 21.1Slate blue · ΔE 23.7
Nearest named CSS colourMidnight blue (#191970)ΔE 8.78, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8A7817
Analogous#17638A, #3E178A
Triadic#8A1729, #298A17
Split complementary#8A3E17, #638A17
Tetradic#8A1763, #8A7817, #178A3E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8393EA
Lighter +30%#576DE3
Lighter +20%#2B47DC
Lighter +10%#1E36B6
Darker −10%#101C5E
Darker −20%#080F33
Darker −30%#010207
Darker −40%#000000
More saturated +25%#031B9E
Less saturated −25%#2B3776

Channel breakdown

R23
G41
B138
Red23 (9%)
Green41 (16.1%)
Blue138 (54.1%)
Hue230.61°
Saturation (HSL)71.43%
Lightness31.57%
Dominant channelBlue
Hex per channelR 17 · G 29 · B 8A

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Every value on this page was computed from “17298a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.