#5C64CE
Closest named color: Dark Periwinkle (#665FD1). oklch(55.2% 0.161 276.5), rgb(92, 100, 206).
Aa
White text reads best on this color (5.03:1).
About this color
#5C64CE is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.161 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.018 away. White text reads best on it, at 5.03:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.161) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.16:1 |
| White text | 5.03:1 |
Values
| HEX | #5C64CE |
| RGB | rgb(92, 100, 206) |
| HSL | hsl(236, 54%, 58%) |
| OKLCH | oklch(55.2% 0.161 276.5) |
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 #5C64CE | 5.03:1 | AA | Lc -79.9 | Fine for body text |
| Black text on #5C64CE | 4.16:1 | AA large text | Lc 29.5 | Dividers and decoration only |
| #5C64CE text on white | 5.03:1 | AA | Lc 74.5 | Content text, not long reading |
| #5C64CE text on black | 4.16:1 | AA large text | Lc -27.2 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E6E9F8
oklch(93.6% 0.02 276.9)
-
Step 200
200
#D2D7F4
oklch(88.4% 0.04 277.8)
-
Step 300
300
#B4BDF0
oklch(80.9% 0.073 276.8)
-
Step 400
400
#8E99E8
oklch(70.6% 0.116 276.9)
-
Step 500
500
#737EE2
oklch(63.1% 0.149 276.5)
-
Step 600
600 (this color)
#5C64CE
oklch(55.2% 0.161 276.5)
-
Step 700
700
#4D53B4
oklch(49% 0.151 276.6)
-
Step 800
800
#3F4591
oklch(42.7% 0.123 276.4)
-
Step 900
900
#353B74
oklch(37.8% 0.096 276.2)
-
Step 950
950
#1F2344
oklch(27.1% 0.061 276.3)
#5C64CE 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) | #2B74D2 | 0.057 |
| Deuteranopia (no green cones) | #166ACC | 0.062 |
| Tritanopia (no blue cones) | #207C8F | 0.142 |
| Achromatopsia (no color) | #6F6F6F | 0.162 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5C64CE
#5C64CE
oklch(55.2% 0.161 276.5)
- #867100
#867100
oklch(55.2% 0.114 96.1)
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 #5C64CE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.018
- Slate Blue #6A5ACD ΔE 0.029
- Iris #6258C4 ΔE 0.032
- Light Indigo #6D5ACF ΔE 0.032
- Royal Blue #4169E1 ΔE 0.042
- Warm Blue #4B57DB ΔE 0.046
- Neon Blue #4361EE ΔE 0.058
- French Blue #436BAD ΔE 0.065
Use #5C64CE 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.