Skip to the color picker

#3f428c color: Spectrum Blue

#3f428c is rgb(63, 66, 140) in RGB and oklch(41.735% 0.12036 278.068) in OKLCH. Every other format, shade and contrast value is below.

Read as HEX

238°
100%

41.7%
0.120
278°
  • Indigo
  • Dark
  • Soft
  • Cool
  • ≈ Cobalt
  • blue-900
  • Black 45%

Inside sRGB: displays the same on any screen.

White text
8.86:1Readable · AA
Lc -95
Black text
2.37:1Hard to read
Lc 14

Shades

From lightest to darkest. Click a shade to use it.

Harmonies

Open as palette

Recent

Colors you stop on or copy appear here. They stay on this device.

About #3f428c

#3f428c is a soft dark indigo color. In OKLCH it has 41.7% lightness, 0.12 chroma and a hue of 278°.

Inside sRGB: displays the same on any screen.

White text on it reaches 8.86:1 contrast and black text 2.37:1, 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: #3f428c mixed with white

  1. 3f428c
  2. 4f5498
  3. 6067a4
  4. 7279b0
  5. 858bbb
  6. 989ec7
  7. acb1d2
  8. c0c4de
  9. d4d7e9
  10. eaebf4

Darker: #3f428c mixed with black

  1. 3f428c
  2. 353879
  3. 2c2f67
  4. 232555
  5. 1b1c43
  6. 121433
  7. 0a0b23
  8. 040514
  9. 010107
  10. 000001

Calmer: #3f428c with less saturation

  1. 3f428c
  2. 404486
  3. 414580
  4. 424779
  5. 434873
  6. 45496d
  7. 464a67
  8. 474b60
  9. 494b5a
  10. 4b4c53

Questions about #3f428c

What color is #3f428c?

#3f428c is soft dark indigo. The closest named color is Spectrum Blue. In RGB it is rgb(63, 66, 140), in HSL hsl(237.66, 37.93%, 39.8%) and in OKLCH oklch(41.735% 0.12036 278.068).

What colors go well with #3f428c?

The complementary color of #3f428c is #5c4c00. For a calmer combination use the analogous colors #004f8a and #5f367e. The triadic partners are #802e12 and #005f31.

Is white or black text more readable on #3f428c?

White text reads better on #3f428c: white gives a contrast ratio of 8.86:1 and black gives 2.37:1. WCAG AA asks for at least 4.5:1 for body text.

Is #3f428c a warm or cool color?

#3f428c is a cool color. In OKLCH its hue is 278 degrees, its lightness 41.7% and its chroma 0.12.