#536FED
Closest named color: Royal Blue (#4169E1). oklch(58.9% 0.192 270.1), rgb(83, 111, 237).
Aa
Black text reads best on this color (4.86:1).
About this color
#536FED is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.192 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.032 away. Black text reads best on it, at 4.86:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.192) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.86:1 |
| White text | 4.31:1 |
Values
| HEX | #536FED |
| RGB | rgb(83, 111, 237) |
| HSL | hsl(229, 81%, 63%) |
| OKLCH | oklch(58.9% 0.192 270.1) |
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 #536FED | 4.31:1 | AA large text | Lc -75.0 | Content text, not long reading |
| Black text on #536FED | 4.86:1 | AA | Lc 34.6 | Non-text elements, placeholder text |
| #536FED text on white | 4.31:1 | AA large text | Lc 69.5 | Content text, not long reading |
| #536FED text on black | 4.86:1 | AA | Lc -32.2 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3EAFB
oklch(93.7% 0.024 267.9)
-
Step 200
200
#CDD8FA
oklch(88.5% 0.048 271.2)
-
Step 300
300
#ABBEF9
oklch(80.8% 0.086 270.6)
-
Step 400
400
#7F9BF6
oklch(70.7% 0.137 269.7)
-
Step 500
500
#617FF3
oklch(63.2% 0.176 269.9)
-
Step 600
600 (this color)
#536FED
oklch(58.9% 0.192 270.1)
-
Step 700
700
#3C52C4
oklch(49% 0.179 270.1)
-
Step 800
800
#31449E
oklch(42.6% 0.148 270)
-
Step 900
900
#2B3B7E
oklch(37.8% 0.115 270)
-
Step 950
950
#19234A
oklch(27.1% 0.073 270.1)
#536FED 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) | #1481F1 | 0.055 |
| Deuteranopia (no green cones) | #0073EA | 0.050 |
| Tritanopia (no blue cones) | #008DA3 | 0.160 |
| Achromatopsia (no color) | #7A7A7A | 0.192 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #536FED
#536FED
oklch(58.9% 0.192 270.1)
- #997900
#997900
oklch(59% 0.121 90.1)
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 #536FED, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.032
- Neon Blue #4361EE ΔE 0.040
- Cornflower #6A79F7 ΔE 0.042
- Clear Blue #247AFD ΔE 0.045
- Cerulean Blue #056EEE ΔE 0.051
- Medium Slate Blue #7B68EE ΔE 0.054
- Dark Periwinkle #665FD1 ΔE 0.057
- Warm Blue #4B57DB ΔE 0.064
Use #536FED 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.