#5B67CF
Closest named color: Dark Periwinkle (#665FD1). oklch(55.8% 0.159 275.1), rgb(91, 103, 207).
Aa
White text reads best on this color (4.89:1).
About this color
#5B67CF is a medium-dark, vivid blue. In OKLCH its lightness is 56%, its chroma 0.159 and its hue 275°. 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 4.89:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.159) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.28:1 |
| White text | 4.89:1 |
Values
| HEX | #5B67CF |
| RGB | rgb(91, 103, 207) |
| HSL | hsl(234, 55%, 58%) |
| OKLCH | oklch(55.8% 0.159 275.1) |
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 #5B67CF | 4.89:1 | AA | Lc -79.1 | Fine for body text |
| Black text on #5B67CF | 4.28:1 | AA large text | Lc 30.4 | Non-text elements, placeholder text |
| #5B67CF text on white | 4.89:1 | AA | Lc 73.7 | Content text, not long reading |
| #5B67CF text on black | 4.28:1 | AA large text | Lc -28.0 | 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
#E5E9F8
oklch(93.5% 0.021 274)
-
Step 200
200
#D1D8F4
oklch(88.6% 0.039 274.4)
-
Step 300
300
#B3BEEF
oklch(81% 0.07 274.9)
-
Step 400
400
#8C9AE8
oklch(70.7% 0.115 275.3)
-
Step 500
500
#717FE1
oklch(63.1% 0.147 275.2)
-
Step 600
600 (this color)
#5B67CF
oklch(55.8% 0.159 275.1)
-
Step 700
700
#4B55B3
oklch(49.2% 0.148 275)
-
Step 800
800
#3D4691
oklch(42.8% 0.123 274.8)
-
Step 900
900
#343B73
oklch(37.6% 0.095 275.5)
-
Step 950
950
#1E2344
oklch(27% 0.061 275)
#5B67CF 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) | #3176D3 | 0.052 |
| Deuteranopia (no green cones) | #1E6CCD | 0.056 |
| Tritanopia (no blue cones) | #187E91 | 0.140 |
| Achromatopsia (no color) | #717171 | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B67CF
#5B67CF
oklch(55.8% 0.159 275.1)
- #897200
#897200
oklch(55.8% 0.114 94.9)
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 #5B67CF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.024
- Slate Blue #6A5ACD ΔE 0.035
- Light Indigo #6D5ACF ΔE 0.038
- Iris #6258C4 ΔE 0.039
- Royal Blue #4169E1 ΔE 0.039
- Warm Blue #4B57DB ΔE 0.051
- Neon Blue #4361EE ΔE 0.058
- Windows Blue #3778BF ΔE 0.063
Use #5B67CF 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.