#363989
Closest named color: Dark Slate Blue (#483D8B). oklch(39% 0.131 276.9), rgb(54, 57, 137).
Aa
White text reads best on this color (9.98:1).
About this color
#363989 is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.131 and its hue 277°. 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 9.98:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.131) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.10:1 |
| White text | 9.98:1 |
Values
| HEX | #363989 |
| RGB | rgb(54, 57, 137) |
| HSL | hsl(238, 43%, 37%) |
| OKLCH | oklch(39% 0.131 276.9) |
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 #363989 | 9.98:1 | AAA | Lc -97.0 | Preferred for body text |
| Black text on #363989 | 2.10:1 | Fails | Lc 11.1 | Not readable |
| #363989 text on white | 9.98:1 | AAA | Lc 92.8 | Preferred for body text |
| #363989 text on black | 2.10:1 | Fails | Lc -9.6 | 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
#E5E9FD
oklch(93.7% 0.027 276.8)
-
Step 200
200
#CFD7FE
oklch(88.6% 0.054 276.1)
-
Step 300
300
#B0BBFF
oklch(80.8% 0.097 276.9)
-
Step 400
400
#8995FF
oklch(70.7% 0.154 276.8)
-
Step 500
500
#6F76FF
oklch(63.2% 0.2 276.8)
-
Step 600
600
#5A59EE
oklch(55.5% 0.218 276.9)
-
Step 700
700
#4B48D0
oklch(49.2% 0.203 276.9)
-
Step 800
800
#3D3CA8
oklch(42.7% 0.168 277)
-
Step 900
900 (this color)
#363989
oklch(39% 0.131 276.9)
-
Step 950
950
#1D204E
oklch(27% 0.083 276.5)
#363989 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) | #00468C | 0.051 |
| Deuteranopia (no green cones) | #003F87 | 0.047 |
| Tritanopia (no blue cones) | #004C5B | 0.114 |
| Achromatopsia (no color) | #424242 | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #363989
#363989
oklch(39% 0.131 276.9)
- #514500
#514500
oklch(39.1% 0.081 97.9)
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 #363989, 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
- Blueberry #464196 ΔE 0.040
- Cobalt #1E488F ΔE 0.044
- Twilight Blue #0A437A ΔE 0.055
- Sapphire #2138AB ΔE 0.061
- Light Navy #155084 ΔE 0.069
- Dusk Blue #26538D ΔE 0.071
- Marine Blue #01386A ΔE 0.076
Use #363989 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.