#5B68D4
Closest named color: Dark Periwinkle (#665FD1). oklch(56.3% 0.165 274.7), rgb(91, 104, 212).
Aa
White text reads best on this color (4.79:1).
About this color
#5B68D4 is a medium-dark, vivid blue. In OKLCH its lightness is 56%, its chroma 0.165 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.025 away. White text reads best on it, at 4.79:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.165) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.37:1 |
| White text | 4.79:1 |
Values
| HEX | #5B68D4 |
| RGB | rgb(91, 104, 212) |
| HSL | hsl(234, 58%, 59%) |
| OKLCH | oklch(56.3% 0.165 274.7) |
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 #5B68D4 | 4.79:1 | AA | Lc -78.5 | Fine for body text |
| Black text on #5B68D4 | 4.37:1 | AA large text | Lc 31.1 | Non-text elements, placeholder text |
| #5B68D4 text on white | 4.79:1 | AA | Lc 73.0 | Content text, not long reading |
| #5B68D4 text on black | 4.37:1 | AA large text | Lc -28.7 | 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
#E5E9F9
oklch(93.6% 0.022 274.7)
-
Step 200
200
#D1D8F5
oklch(88.6% 0.041 274.8)
-
Step 300
300
#B2BEF1
oklch(81% 0.073 274.3)
-
Step 400
400
#8B9AEA
oklch(70.7% 0.118 274.9)
-
Step 500
500
#6F7FE4
oklch(63.1% 0.152 274.4)
-
Step 600
600 (this color)
#5B68D4
oklch(56.3% 0.165 274.7)
-
Step 700
700
#4954B6
oklch(49.1% 0.154 274.4)
-
Step 800
800
#3C4593
oklch(42.6% 0.127 274.7)
-
Step 900
900
#333B75
oklch(37.7% 0.099 274.8)
-
Step 950
950
#1E2345
oklch(27.1% 0.063 275.1)
#5B68D4 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) | #2D78D8 | 0.054 |
| Deuteranopia (no green cones) | #156DD2 | 0.059 |
| Tritanopia (no blue cones) | #0A8194 | 0.146 |
| Achromatopsia (no color) | #727272 | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B68D4
#5B68D4
oklch(56.3% 0.165 274.7)
- #8B7300
#8B7300
oklch(56.2% 0.115 94.4)
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 #5B68D4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.025
- Royal Blue #4169E1 ΔE 0.035
- Slate Blue #6A5ACD ΔE 0.038
- Light Indigo #6D5ACF ΔE 0.039
- Iris #6258C4 ΔE 0.044
- Warm Blue #4B57DB ΔE 0.050
- Neon Blue #4361EE ΔE 0.053
- Medium Slate Blue #7B68EE ΔE 0.061
Use #5B68D4 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.