#363387
Closest named color: Dark Slate Blue (#483D8B). oklch(37.7% 0.136 279.2), rgb(54, 51, 135).
Aa
White text reads best on this color (10.60:1).
About this color
#363387 is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.136 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.042 away. White text reads best on it, at 10.60:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.136) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.98:1 |
| White text | 10.60:1 |
Values
| HEX | #363387 |
| RGB | rgb(54, 51, 135) |
| HSL | hsl(242, 45%, 36%) |
| OKLCH | oklch(37.7% 0.136 279.2) |
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 #363387 | 10.60:1 | AAA | Lc -98.2 | Preferred for body text |
| Black text on #363387 | 1.98:1 | Fails | Lc 9.7 | Not readable |
| #363387 text on white | 10.60:1 | AAA | Lc 94.2 | Preferred for body text |
| #363387 text on black | 1.98:1 | Fails | Lc -8.4 | 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
#F3F5FF
oklch(97.2% 0.013 277.1)
-
Step 100
100
#E5E8FE
oklch(93.5% 0.03 279.6)
-
Step 200
200
#D1D6FF
oklch(88.5% 0.057 279.7)
-
Step 300
300
#B3BAFF
oklch(80.8% 0.098 279.5)
-
Step 400
400
#8D93FF
oklch(70.6% 0.156 279.2)
-
Step 500
500
#7474FF
oklch(63.2% 0.201 278.9)
-
Step 600
600
#6055F2
oklch(55.6% 0.226 279.2)
-
Step 700
700
#5043D3
oklch(49% 0.211 279.3)
-
Step 800
800
#4139AB
oklch(42.8% 0.175 279.1)
-
Step 900
900 (this color)
#363387
oklch(37.7% 0.136 279.2)
-
Step 950
950
#1F1F4F
oklch(27% 0.086 279)
#363387 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) | #00428A | 0.055 |
| Deuteranopia (no green cones) | #003B85 | 0.051 |
| Tritanopia (no blue cones) | #024758 | 0.116 |
| Achromatopsia (no color) | #3F3F3F | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #363387
#363387
oklch(37.7% 0.136 279.2)
- #4C4200
#4C4200
oklch(37.8% 0.078 99.5)
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 #363387, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.042
- Blueberry #464196 ΔE 0.052
- Cobalt #1E488F ΔE 0.058
- Twilight Blue #0A437A ΔE 0.062
- Sapphire #2138AB ΔE 0.065
- Marine Blue #01386A ΔE 0.075
- Imperial Purple #480CA8 ΔE 0.079
- Indigo Blue #3A18B1 ΔE 0.079
Use #363387 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.