Skip to the color picker

#647bc1 color: Ultramarine Blue

#647bc1 is rgb(100, 123, 193) in RGB and oklch(59.561% 0.11065 269.082) in OKLCH. Every other format, shade and contrast value is below.

Read as HEX

225°
100%

59.6%
0.111
269°
  • Blue
  • Medium
  • Soft
  • Cool
  • ≈ Steel blue
  • slate-500
  • Black 24%

Inside sRGB: displays the same on any screen.

White text
4.08:1Hard to read
Lc -73
Black text
5.15:1Readable · AA
Lc 36

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 #647bc1

#647bc1 is a soft blue color. In OKLCH it has 59.6% lightness, 0.111 chroma and a hue of 269°.

Inside sRGB: displays the same on any screen.

White text on it reaches 4.08:1 contrast and black text 5.15:1, so white text reads better.

The closest named color is Ultramarine Blue (#657abb). In Tailwind CSS the closest color is slate-500.

More medium blue colors

Lighter: #647bc1 mixed with white

  1. 647bc1
  2. 7288c8
  3. 8195ce
  4. 90a2d5
  5. 9fafdb
  6. aebce2
  7. bec9e8
  8. ced7ee
  9. dee4f4
  10. eef1f9

Darker: #647bc1 mixed with black

  1. 647bc1
  2. 566aa7
  3. 485a8f
  4. 3b4a77
  5. 2e3a5f
  6. 222c49
  7. 161e34
  8. 0b1020
  9. 03050e
  10. 000102

Calmer: #647bc1 with less saturation

  1. 647bc1
  2. 677cbb
  3. 697cb4
  4. 6c7dae
  5. 6f7ea7
  6. 717ea1
  7. 747e9a
  8. 777f93
  9. 797f8d
  10. 7c7f86

Questions about #647bc1

What color is #647bc1?

#647bc1 is soft blue. The closest named color is Ultramarine Blue. In RGB it is rgb(100, 123, 193), in HSL hsl(225.16, 42.86%, 57.45%) and in OKLCH oklch(59.561% 0.11065 269.082).

What colors go well with #647bc1?

The complementary color of #647bc1 is #997b1f. For a calmer combination use the analogous colors #3387b9 and #886fb7. The triadic partners are #b86358 and #4a9159.

Is white or black text more readable on #647bc1?

White text reads better on #647bc1: white gives a contrast ratio of 4.08:1 and black gives 5.15:1. WCAG AA asks for at least 4.5:1 for body text.

Is #647bc1 a warm or cool color?

#647bc1 is a cool color. In OKLCH its hue is 269 degrees, its lightness 59.6% and its chroma 0.111.