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#3f428b color: Spectrum Blue

#3f428b is rgb(63, 66, 139) in RGB and oklch(41.662% 0.11888 278.129) in OKLCH. Every other format, shade and contrast value is below.

Read as HEX

238°
100%

41.7%
0.119
278°
  • Indigo
  • Dark
  • Soft
  • Cool
  • ≈ Cobalt
  • blue-900
  • Black 45%

Inside sRGB: displays the same on any screen.

White text
8.89:1Readable · AA
Lc -95
Black text
2.36:1Hard to read
Lc 14

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About #3f428b

#3f428b is a soft dark indigo color. In OKLCH it has 41.7% lightness, 0.119 chroma and a hue of 278°.

Inside sRGB: displays the same on any screen.

White text on it reaches 8.89:1 contrast and black text 2.36:1, so white text reads better.

The closest named color is Spectrum Blue (#44448d). In Tailwind CSS the closest color is blue-900.

More dark indigo colors

Lighter: #3f428b mixed with white

  1. 3f428b
  2. 4f5497
  3. 6066a3
  4. 7279af
  5. 858bbb
  6. 989ec6
  7. acb1d2
  8. c0c4dd
  9. d4d7e9
  10. eaebf4

Darker: #3f428b mixed with black

  1. 3f428b
  2. 353878
  3. 2c2f66
  4. 232554
  5. 1b1c43
  6. 121432
  7. 0a0b23
  8. 040514
  9. 010107
  10. 000001

Calmer: #3f428b with less saturation

  1. 3f428b
  2. 404485
  3. 41457f
  4. 424779
  5. 434873
  6. 45496c
  7. 464a66
  8. 474a60
  9. 494b59
  10. 4a4c53

Questions about #3f428b

What color is #3f428b?

#3f428b is soft dark indigo. The closest named color is Spectrum Blue. In RGB it is rgb(63, 66, 139), in HSL hsl(237.63, 37.62%, 39.61%) and in OKLCH oklch(41.662% 0.11888 278.129).

What colors go well with #3f428b?

The complementary color of #3f428b is #5c4b00. For a calmer combination use the analogous colors #004e89 and #5e367d. The triadic partners are #802e13 and #005e32.

Is white or black text more readable on #3f428b?

White text reads better on #3f428b: white gives a contrast ratio of 8.89:1 and black gives 2.36:1. WCAG AA asks for at least 4.5:1 for body text.

Is #3f428b a warm or cool color?

#3f428b is a cool color. In OKLCH its hue is 278 degrees, its lightness 41.7% and its chroma 0.119.