#5366E9
Closest named color: Royal Blue (#4169E1). oklch(56.9% 0.197 272.3), rgb(83, 102, 233).
Aa
White text reads best on this color (4.72:1).
About this color
#5366E9 is a medium-dark, vivid blue. In OKLCH its lightness is 57%, its chroma 0.197 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.024 away. White text reads best on it, at 4.72:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.197) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.44:1 |
| White text | 4.72:1 |
Values
| HEX | #5366E9 |
| RGB | rgb(83, 102, 233) |
| HSL | hsl(232, 77%, 62%) |
| OKLCH | oklch(56.9% 0.197 272.3) |
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 #5366E9 | 4.72:1 | AA | Lc -77.8 | Fine for body text |
| Black text on #5366E9 | 4.44:1 | AA large text | Lc 31.7 | Non-text elements, placeholder text |
| #5366E9 text on white | 4.72:1 | AA | Lc 72.4 | Content text, not long reading |
| #5366E9 text on black | 4.44:1 | AA large text | Lc -29.3 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E4E9FC
oklch(93.6% 0.026 274.1)
-
Step 200
200
#CDD8FB
oklch(88.5% 0.05 271.6)
-
Step 300
300
#ADBEFB
oklch(81% 0.089 272.3)
-
Step 400
400
#8399F9
oklch(70.7% 0.143 272.5)
-
Step 500
500
#667CF6
oklch(63.1% 0.183 272.4)
-
Step 600
600 (this color)
#5366E9
oklch(56.9% 0.197 272.3)
-
Step 700
700
#4150C6
oklch(49.1% 0.183 272.3)
-
Step 800
800
#3542A0
oklch(42.6% 0.152 272.3)
-
Step 900
900
#2D397F
oklch(37.6% 0.118 272.1)
-
Step 950
950
#1A224B
oklch(27% 0.076 272.1)
#5366E9 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) | #007AED | 0.062 |
| Deuteranopia (no green cones) | #006DE6 | 0.053 |
| Tritanopia (no blue cones) | #00869E | 0.164 |
| Achromatopsia (no color) | #737373 | 0.198 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5366E9
#5366E9
oklch(56.9% 0.197 272.3)
- #907400
#907400
oklch(57% 0.116 91.9)
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 #5366E9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.024
- Neon Blue #4361EE ΔE 0.024
- Warm Blue #4B57DB ΔE 0.043
- Dark Periwinkle #665FD1 ΔE 0.045
- Cerulean Blue #056EEE ΔE 0.051
- Slate Blue #6A5ACD ΔE 0.056
- Light Indigo #6D5ACF ΔE 0.056
- Azul #1D5DEC ΔE 0.057
Use #5366E9 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.