#5B6AEA
Closest named color: Royal Blue (#4169E1). oklch(58.2% 0.192 273.8), rgb(91, 106, 234).
Aa
Black text reads best on this color (4.69:1).
About this color
#5B6AEA is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.192 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.033 away. Black text reads best on it, at 4.69:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.192) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.69:1 |
| White text | 4.47:1 |
Values
| HEX | #5B6AEA |
| RGB | rgb(91, 106, 234) |
| HSL | hsl(234, 77%, 64%) |
| OKLCH | oklch(58.2% 0.192 273.8) |
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 #5B6AEA | 4.47:1 | AA large text | Lc -76.1 | Fine for body text |
| Black text on #5B6AEA | 4.69:1 | AA | Lc 33.4 | Non-text elements, placeholder text |
| #5B6AEA text on white | 4.47:1 | AA large text | Lc 70.7 | Content text, not long reading |
| #5B6AEA text on black | 4.69:1 | AA | Lc -31.0 | Non-text elements, placeholder text |
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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
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
#6A7CF2
oklch(63.1% 0.176 273.7)
-
Step 600
600 (this color)
#5B6AEA
oklch(58.2% 0.192 273.8)
-
Step 700
700
#4550C3
oklch(49.1% 0.178 273.7)
-
Step 800
800
#39429E
oklch(42.7% 0.148 274.1)
-
Step 900
900
#30397D
oklch(37.6% 0.115 273.9)
-
Step 950
950
#1C2249
oklch(27% 0.072 274)
#5B6AEA 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) | #007EEE | 0.067 |
| Deuteranopia (no green cones) | #0071E7 | 0.061 |
| Tritanopia (no blue cones) | #0088A0 | 0.162 |
| Achromatopsia (no color) | #777777 | 0.192 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B6AEA
#5B6AEA
oklch(58.2% 0.192 273.8)
- #937900
#937900
oklch(58.4% 0.12 93.8)
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 #5B6AEA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.033
- Neon Blue #4361EE ΔE 0.038
- Medium Slate Blue #7B68EE ΔE 0.045
- Dark Periwinkle #665FD1 ΔE 0.045
- Cornflower #6A79F7 ΔE 0.047
- Warm Blue #4B57DB ΔE 0.056
- Light Indigo #6D5ACF ΔE 0.057
- Slate Blue #6A5ACD ΔE 0.057
Use #5B6AEA 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.