#5664E4
Closest named color: Royal Blue (#4169E1). oklch(56.4% 0.193 273.8), rgb(86, 100, 228).
Aa
White text reads best on this color (4.84:1).
About this color
#5664E4 is a medium-dark, vivid blue. In OKLCH its lightness is 56%, its chroma 0.193 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.025 away. White text reads best on it, at 4.84:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.193) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.33:1 |
| White text | 4.84:1 |
Values
| HEX | #5664E4 |
| RGB | rgb(86, 100, 228) |
| HSL | hsl(234, 72%, 62%) |
| OKLCH | oklch(56.4% 0.193 273.8) |
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 #5664E4 | 4.84:1 | AA | Lc -78.6 | Fine for body text |
| Black text on #5664E4 | 4.33:1 | AA large text | Lc 30.9 | Non-text elements, placeholder text |
| #5664E4 text on white | 4.84:1 | AA | Lc 73.2 | Content text, not long reading |
| #5664E4 text on black | 4.33:1 | AA large text | Lc -28.5 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E4E9FB
oklch(93.6% 0.025 273.5)
-
Step 200
200
#CFD8FA
oklch(88.6% 0.048 273.7)
-
Step 300
300
#AFBDF9
oklch(80.9% 0.086 274.1)
-
Step 400
400
#8699F6
oklch(70.8% 0.138 273.6)
-
Step 500
500
#6A7CF3
oklch(63.1% 0.178 273.7)
-
Step 600
600 (this color)
#5664E4
oklch(56.4% 0.193 273.8)
-
Step 700
700
#4550C4
oklch(49.2% 0.179 273.7)
-
Step 800
800
#38429E
oklch(42.6% 0.148 273.6)
-
Step 900
900
#30397E
oklch(37.7% 0.116 273.9)
-
Step 950
950
#1C224A
oklch(27% 0.074 274)
#5664E4 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) | #0078E8 | 0.065 |
| Deuteranopia (no green cones) | #006CE1 | 0.058 |
| Tritanopia (no blue cones) | #00839A | 0.163 |
| Achromatopsia (no color) | #727272 | 0.193 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5664E4
#5664E4
oklch(56.4% 0.193 273.8)
- #8C7300
#8C7300
oklch(56.3% 0.115 93.7)
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 #5664E4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.025
- Neon Blue #4361EE ΔE 0.029
- Dark Periwinkle #665FD1 ΔE 0.036
- Warm Blue #4B57DB ΔE 0.038
- Slate Blue #6A5ACD ΔE 0.047
- Light Indigo #6D5ACF ΔE 0.048
- Iris #6258C4 ΔE 0.056
- Medium Slate Blue #7B68EE ΔE 0.057
Use #5664E4 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.