#6164C5
Closest named color: Dark Periwinkle (#665FD1). oklch(54.9% 0.148 279), rgb(97, 100, 197).
Aa
White text reads best on this color (5.07:1).
About this color
#6164C5 is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.148 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.024 away. White text reads best on it, at 5.07:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.148) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.13:1 |
| White text | 5.07:1 |
Values
| HEX | #6164C5 |
| RGB | rgb(97, 100, 197) |
| HSL | hsl(238, 46%, 58%) |
| OKLCH | oklch(54.9% 0.148 279) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #6164C5 | 5.07:1 | AA | Lc -80.2 | Fine for body text |
| Black text on #6164C5 | 4.13:1 | AA large text | Lc 29.2 | Dividers and decoration only |
| #6164C5 text on white | 5.07:1 | AA | Lc 74.8 | Content text, not long reading |
| #6164C5 text on black | 4.13:1 | AA large text | Lc -26.9 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 600.
-
Step 50
50
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E7E9F7
oklch(93.7% 0.019 279.5)
-
Step 200
200
#D3D7F2
oklch(88.4% 0.037 278.9)
-
Step 300
300
#B7BDEC
oklch(81% 0.067 279.1)
-
Step 400
400
#9299E2
oklch(70.6% 0.107 279.1)
-
Step 500
500
#797FDA
oklch(63.2% 0.136 278.9)
-
Step 600
600 (this color)
#6164C5
oklch(54.9% 0.148 279)
-
Step 700
700
#5254AC
oklch(49% 0.137 279.1)
-
Step 800
800
#43458B
oklch(42.6% 0.114 279.2)
-
Step 900
900
#383B6F
oklch(37.7% 0.088 278.8)
-
Step 950
950
#212341
oklch(27% 0.055 279.1)
#6164C5 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #3772C8 | 0.054 |
| Deuteranopia (no green cones) | #2D6BC3 | 0.057 |
| Tritanopia (no blue cones) | #39798B | 0.129 |
| Achromatopsia (no color) | #6E6E6E | 0.148 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6164C5
#6164C5
oklch(54.9% 0.148 279)
- #827200
#827200
oklch(55% 0.114 99.5)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #6164C5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.024
- Iris #6258C4 ΔE 0.029
- Slate Blue #6A5ACD ΔE 0.030
- Light Indigo #6D5ACF ΔE 0.034
- Royal Blue #4169E1 ΔE 0.056
- French Blue #436BAD ΔE 0.058
- Warm Blue #4B57DB ΔE 0.059
- Windows Blue #3778BF ΔE 0.067
Use #6164C5 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.