#363D83
Closest named color: Dark Slate Blue (#483D8B). oklch(39.4% 0.116 275.4), rgb(54, 61, 131).
Aa
White text reads best on this color (9.75:1).
About this color
#363D83 is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.116 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.032 away. White text reads best on it, at 9.75:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.15:1 |
| White text | 9.75:1 |
Values
| HEX | #363D83 |
| RGB | rgb(54, 61, 131) |
| HSL | hsl(235, 42%, 36%) |
| OKLCH | oklch(39.4% 0.116 275.4) |
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 #363D83 | 9.75:1 | AAA | Lc -96.6 | Preferred for body text |
| Black text on #363D83 | 2.15:1 | Fails | Lc 11.6 | Not readable |
| #363D83 text on white | 9.75:1 | AAA | Lc 92.4 | Preferred for body text |
| #363D83 text on black | 2.15:1 | Fails | Lc -10.0 | Not readable |
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 900.
-
Step 50
50
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E5E9FB
oklch(93.6% 0.025 275.9)
-
Step 200
200
#CFD7FA
oklch(88.4% 0.049 275.2)
-
Step 300
300
#B0BDF9
oklch(81% 0.086 274.8)
-
Step 400
400
#8998F7
oklch(70.8% 0.14 275.5)
-
Step 500
500
#6E7BF3
oklch(63.2% 0.178 275.4)
-
Step 600
600
#5860E2
oklch(55.6% 0.194 275.4)
-
Step 700
700
#494EC4
oklch(49.1% 0.181 275.7)
-
Step 800
800
#3B419E
oklch(42.6% 0.149 275.3)
-
Step 900
900 (this color)
#363D83
oklch(39.4% 0.116 275.4)
-
Step 950
950
#1D224A
oklch(27.1% 0.074 275)
#363D83 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) | #164785 | 0.039 |
| Deuteranopia (no green cones) | #064182 | 0.043 |
| Tritanopia (no blue cones) | #074D5A | 0.102 |
| Achromatopsia (no color) | #444444 | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #363D83
#363D83
oklch(39.4% 0.116 275.4)
- #534500
#534500
oklch(39.3% 0.081 95.8)
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 #363D83, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.032
- Cobalt #1E488F ΔE 0.039
- Blueberry #464196 ΔE 0.042
- Twilight Blue #0A437A ΔE 0.047
- Light Navy #155084 ΔE 0.058
- Dusk Blue #26538D ΔE 0.061
- Twilight #4E518B ΔE 0.070
- Marine Blue #01386A ΔE 0.071
Use #363D83 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.