#363D80
Closest named color: Dark Slate Blue (#483D8B). oklch(39.1% 0.112 275.5), rgb(54, 61, 128).
Aa
White text reads best on this color (9.83:1).
About this color
#363D80 is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.112 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.034 away. White text reads best on it, at 9.83:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.13:1 |
| White text | 9.83:1 |
Values
| HEX | #363D80 |
| RGB | rgb(54, 61, 128) |
| HSL | hsl(234, 41%, 36%) |
| OKLCH | oklch(39.1% 0.112 275.5) |
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 #363D80 | 9.83:1 | AAA | Lc -96.8 | Preferred for body text |
| Black text on #363D80 | 2.13:1 | Fails | Lc 11.4 | Not readable |
| #363D80 text on white | 9.83:1 | AAA | Lc 92.6 | Preferred for body text |
| #363D80 text on black | 2.13:1 | Fails | Lc -9.9 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9FB
oklch(93.6% 0.025 275.9)
-
Step 200
200
#D0D7F9
oklch(88.5% 0.047 276.2)
-
Step 300
300
#B1BDF7
oklch(81% 0.083 275.3)
-
Step 400
400
#8998F3
oklch(70.6% 0.134 275.3)
-
Step 500
500
#6F7CEF
oklch(63.2% 0.171 275.5)
-
Step 600
600
#5962DD
oklch(55.7% 0.185 275.5)
-
Step 700
700
#4950C0
oklch(49.1% 0.173 275.3)
-
Step 800
800
#3C429B
oklch(42.7% 0.143 275.6)
-
Step 900
900 (this color)
#363D80
oklch(39.1% 0.112 275.5)
-
Step 950
950
#1D2248
oklch(27% 0.07 275)
#363D80 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) | #1A4782 | 0.038 |
| Deuteranopia (no green cones) | #0E407F | 0.040 |
| Tritanopia (no blue cones) | #0D4C58 | 0.099 |
| Achromatopsia (no color) | #434343 | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #363D80
#363D80
oklch(39.1% 0.112 275.5)
- #534400
#534400
oklch(39.1% 0.08 94.6)
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 #363D80, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.034
- Cobalt #1E488F ΔE 0.042
- Twilight Blue #0A437A ΔE 0.045
- Blueberry #464196 ΔE 0.046
- Light Navy #155084 ΔE 0.058
- Dusk Blue #26538D ΔE 0.062
- Marine Blue #01386A ΔE 0.068
- Twilight #4E518B ΔE 0.071
Use #363D80 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.