#383A99
Closest named color: Blueberry (#464196). oklch(40.7% 0.152 276.4), rgb(56, 58, 153).
Aa
White text reads best on this color (9.40:1).
About this color
#383A99 is a dark, vivid blue. In OKLCH its lightness is 41%, its chroma 0.152 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.030 away. White text reads best on it, at 9.40:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | vivid (0.152) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.23:1 |
| White text | 9.40:1 |
Values
| HEX | #383A99 |
| RGB | rgb(56, 58, 153) |
| HSL | hsl(239, 46%, 41%) |
| OKLCH | oklch(40.7% 0.152 276.4) |
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 #383A99 | 9.40:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #383A99 | 2.23:1 | Fails | Lc 12.7 | Not readable |
| #383A99 text on white | 9.40:1 | AAA | Lc 91.3 | Preferred for body text |
| #383A99 text on black | 2.23:1 | Fails | Lc -11.1 | 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 800.
-
Step 50
50
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E5E9FC
oklch(93.7% 0.026 276.4)
-
Step 200
200
#D0D7FA
oklch(88.5% 0.049 276.4)
-
Step 300
300
#B1BCFA
oklch(80.9% 0.089 276.4)
-
Step 400
400
#8A97F8
oklch(70.8% 0.142 276.4)
-
Step 500
500
#6F79F4
oklch(63% 0.181 276.4)
-
Step 600
600
#5A5FE3
oklch(55.7% 0.196 276.3)
-
Step 700
700
#4A4DC5
oklch(49% 0.183 276.2)
-
Step 800
800 (this color)
#383A99
oklch(40.7% 0.152 276.4)
-
Step 900
900
#33387F
oklch(37.8% 0.118 276.1)
-
Step 950
950
#1E214A
oklch(27% 0.075 277)
#383A99 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) | #004A9C | 0.054 |
| Deuteranopia (no green cones) | #004297 | 0.048 |
| Tritanopia (no blue cones) | #005164 | 0.126 |
| Achromatopsia (no color) | #464646 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #383A99
#383A99
oklch(40.7% 0.152 276.4)
- #574900
#574900
oklch(40.8% 0.084 96.5)
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 #383A99, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.030
- Dark Slate Blue #483D8B ΔE 0.036
- Sapphire #2138AB ΔE 0.041
- Cobalt #1E488F ΔE 0.047
- Indigo Blue #3A18B1 ΔE 0.067
- Dusk Blue #26538D ΔE 0.072
- Twilight Blue #0A437A ΔE 0.073
- Imperial Purple #480CA8 ΔE 0.073
Use #383A99 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.