#5B60CF
Closest named color: Dark Periwinkle (#665FD1). oklch(54.4% 0.168 277.3), rgb(91, 96, 207).
Aa
White text reads best on this color (5.22:1).
About this color
#5B60CF is a medium-dark, vivid blue. In OKLCH its lightness is 54%, its chroma 0.168 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.016 away. White text reads best on it, at 5.22:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.168) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.01:1 |
| White text | 5.22:1 |
Values
| HEX | #5B60CF |
| RGB | rgb(91, 96, 207) |
| HSL | hsl(237, 55%, 58%) |
| OKLCH | oklch(54.4% 0.168 277.3) |
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 #5B60CF | 5.22:1 | AA | Lc -81.0 | Fine for body text |
| Black text on #5B60CF | 4.01:1 | AA large text | Lc 28.4 | Dividers and decoration only |
| #5B60CF text on white | 5.22:1 | AA | Lc 75.6 | Fine for body text |
| #5B60CF text on black | 4.01:1 | AA large text | Lc -26.1 | 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
#E6E9F9
oklch(93.6% 0.022 277.5)
-
Step 200
200
#D2D7F5
oklch(88.5% 0.042 278)
-
Step 300
300
#B4BDF2
oklch(81% 0.076 277.1)
-
Step 400
400
#8E99EB
oklch(70.8% 0.12 277)
-
Step 500
500
#747DE5
oklch(63.1% 0.155 277.3)
-
Step 600
600 (this color)
#5B60CF
oklch(54.4% 0.168 277.3)
-
Step 700
700
#4E52B7
oklch(49.1% 0.157 277.3)
-
Step 800
800
#404494
oklch(42.8% 0.129 277.3)
-
Step 900
900
#363A76
oklch(37.8% 0.101 277.5)
-
Step 950
950
#1F2245
oklch(26.9% 0.064 277.4)
#5B60CF 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) | #1B71D3 | 0.065 |
| Deuteranopia (no green cones) | #0068CD | 0.068 |
| Tritanopia (no blue cones) | #1B798E | 0.147 |
| Achromatopsia (no color) | #6C6C6C | 0.169 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B60CF
#5B60CF
oklch(54.4% 0.168 277.3)
- #826F00
#826F00
oklch(54.3% 0.112 97.2)
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 #5B60CF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.016
- Slate Blue #6A5ACD ΔE 0.025
- Iris #6258C4 ΔE 0.025
- Light Indigo #6D5ACF ΔE 0.029
- Warm Blue #4B57DB ΔE 0.038
- Royal Blue #4169E1 ΔE 0.042
- Neon Blue #4361EE ΔE 0.055
- Bluey Purple #6241C7 ΔE 0.069
Use #5B60CF 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.