#383688
Closest named color: Dark Slate Blue (#483D8B). oklch(38.5% 0.133 279.2), rgb(56, 54, 136).
Aa
White text reads best on this color (10.23:1).
About this color
#383688 is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.133 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.034 away. White text reads best on it, at 10.23:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.133) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.05:1 |
| White text | 10.23:1 |
Values
| HEX | #383688 |
| RGB | rgb(56, 54, 136) |
| HSL | hsl(241, 43%, 37%) |
| OKLCH | oklch(38.5% 0.133 279.2) |
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 #383688 | 10.23:1 | AAA | Lc -97.5 | Preferred for body text |
| Black text on #383688 | 2.05:1 | Fails | Lc 10.5 | Not readable |
| #383688 text on white | 10.23:1 | AAA | Lc 93.4 | Preferred for body text |
| #383688 text on black | 2.05:1 | Fails | Lc -9.1 | 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
#D1D6FE
oklch(88.5% 0.055 279.6)
-
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
#6056F0
oklch(55.6% 0.222 279.2)
-
Step 700
700
#5045D1
oklch(49.2% 0.207 279.1)
-
Step 800
800
#413AA8
oklch(42.7% 0.17 279.2)
-
Step 900
900 (this color)
#383688
oklch(38.5% 0.133 279.2)
-
Step 950
950
#1F1F4E
oklch(26.9% 0.084 279.1)
#383688 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) | #00448B | 0.055 |
| Deuteranopia (no green cones) | #003E86 | 0.052 |
| Tritanopia (no blue cones) | #094A59 | 0.116 |
| Achromatopsia (no color) | #414141 | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #383688
#383688
oklch(38.5% 0.133 279.2)
- #4E4400
#4E4400
oklch(38.5% 0.08 99.8)
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 #383688, 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
- Blueberry #464196 ΔE 0.044
- Cobalt #1E488F ΔE 0.052
- Twilight Blue #0A437A ΔE 0.060
- Sapphire #2138AB ΔE 0.064
- Light Navy #155084 ΔE 0.076
- Marine Blue #01386A ΔE 0.077
- Dusk Blue #26538D ΔE 0.078
Use #383688 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.