#383799
Closest named color: Blueberry (#464196). oklch(40.2% 0.155 277.2), rgb(56, 55, 153).
Aa
White text reads best on this color (9.65:1).
About this color
#383799 is a dark, vivid blue. In OKLCH its lightness is 40%, its chroma 0.155 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.036 away. White text reads best on it, at 9.65:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | vivid (0.155) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.17:1 |
| White text | 9.65:1 |
Values
| HEX | #383799 |
| RGB | rgb(56, 55, 153) |
| HSL | hsl(241, 47%, 41%) |
| OKLCH | oklch(40.2% 0.155 277.2) |
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 #383799 | 9.65:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #383799 | 2.17:1 | Fails | Lc 12.1 | Not readable |
| #383799 text on white | 9.65:1 | AAA | Lc 91.9 | Preferred for body text |
| #383799 text on black | 2.17:1 | Fails | Lc -10.5 | 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
#E4E8FF
oklch(93.5% 0.031 277.9)
-
Step 200
200
#CFD6FF
oklch(88.4% 0.057 277.5)
-
Step 300
300
#B1BBFF
oklch(80.9% 0.097 277.5)
-
Step 400
400
#8A95FF
oklch(70.7% 0.154 277.2)
-
Step 500
500
#7075FF
oklch(63.1% 0.201 277.4)
-
Step 600
600
#5A50FF
oklch(55.6% 0.248 277.1)
-
Step 700
700
#4B3AE4
oklch(49.1% 0.241 277.2)
-
Step 800
800
#3D33B8
oklch(42.8% 0.199 277.2)
-
Step 900
900 (this color)
#383799
oklch(40.2% 0.155 277.2)
-
Step 950
950
#1D1D55
oklch(27% 0.099 277.5)
#383799 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) | #00499C | 0.057 |
| Deuteranopia (no green cones) | #004097 | 0.049 |
| Tritanopia (no blue cones) | #005062 | 0.132 |
| Achromatopsia (no color) | #454545 | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #383799
#383799
oklch(40.2% 0.155 277.2)
- #554800
#554800
oklch(40.3% 0.083 97.3)
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 #383799, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.036
- Dark Slate Blue #483D8B ΔE 0.039
- Sapphire #2138AB ΔE 0.041
- Cobalt #1E488F ΔE 0.052
- Indigo Blue #3A18B1 ΔE 0.061
- Imperial Purple #480CA8 ΔE 0.068
- Twilight Blue #0A437A ΔE 0.075
- Majorelle Blue #3F37C9 ΔE 0.078
Use #383799 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.