#536AC5
Closest named color: Dark Periwinkle (#665FD1). oklch(55.2% 0.143 270.5), rgb(83, 106, 197).
Aa
White text reads best on this color (4.95:1).
About this color
#536AC5 is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.143 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.041 away. White text reads best on it, at 4.95:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.143) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.23:1 |
| White text | 4.95:1 |
Values
| HEX | #536AC5 |
| RGB | rgb(83, 106, 197) |
| HSL | hsl(228, 50%, 55%) |
| OKLCH | oklch(55.2% 0.143 270.5) |
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 #536AC5 | 4.95:1 | AA | Lc -79.5 | Fine for body text |
| Black text on #536AC5 | 4.23:1 | AA large text | Lc 30.0 | Dividers and decoration only |
| #536AC5 text on white | 4.95:1 | AA | Lc 74.1 | Content text, not long reading |
| #536AC5 text on black | 4.23:1 | AA large text | Lc -27.6 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF7
oklch(93.7% 0.018 269.1)
-
Step 200
200
#D0D9F2
oklch(88.6% 0.036 269.9)
-
Step 300
300
#B0BFEB
oklch(80.8% 0.065 270.2)
-
Step 400
400
#889DE1
oklch(70.7% 0.103 270.5)
-
Step 500
500
#6B83D9
oklch(63% 0.133 270.5)
-
Step 600
600 (this color)
#536AC5
oklch(55.2% 0.143 270.5)
-
Step 700
700
#4559AB
oklch(49.1% 0.133 270.6)
-
Step 800
800
#38498B
oklch(42.6% 0.111 270.3)
-
Step 900
900
#303E6F
oklch(37.7% 0.086 269.9)
-
Step 950
950
#1C2441
oklch(26.9% 0.055 270.7)
#536AC5 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) | #4075C8 | 0.032 |
| Deuteranopia (no green cones) | #2F6BC3 | 0.036 |
| Tritanopia (no blue cones) | #007E8E | 0.127 |
| Achromatopsia (no color) | #707070 | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #536AC5
#536AC5
oklch(55.2% 0.143 270.5)
- #8B6E00
#8B6E00
oklch(55.1% 0.113 90.4)
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 #536AC5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.041
- French Blue #436BAD ΔE 0.044
- Windows Blue #3778BF ΔE 0.046
- Iris #6258C4 ΔE 0.047
- Royal Blue #4169E1 ΔE 0.047
- Slate Blue #6A5ACD ΔE 0.050
- Mid Blue #276AB3 ΔE 0.053
- Light Indigo #6D5ACF ΔE 0.054
Use #536AC5 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.