#372E6E
Closest named color: Prussian Blue (#1D3557). oklch(34.8% 0.107 285.9), rgb(55, 46, 110).
Aa
White text reads best on this color (11.80:1).
About this color
#372E6E is a dark, moderately saturated purple. In OKLCH its lightness is 35%, its chroma 0.107 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.061 away. White text reads best on it, at 11.80:1.
| Hue family | Purples |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.107) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.77:1 |
| White text | 11.80:1 |
Values
| HEX | #372E6E |
| RGB | rgb(55, 46, 110) |
| HSL | hsl(248, 41%, 31%) |
| OKLCH | oklch(34.8% 0.107 285.9) |
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 #372E6E | 11.80:1 | AAA | Lc -100.5 | Preferred for body text |
| Black text on #372E6E | 1.77:1 | Fails | Lc 0.0 | Not readable |
| #372E6E text on white | 11.80:1 | AAA | Lc 96.9 | Preferred for body text |
| #372E6E text on black | 1.77:1 | Fails | Lc 0.0 | 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
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E8E8F9
oklch(93.6% 0.023 286)
-
Step 200
200
#D6D6F6
oklch(88.6% 0.044 285.5)
-
Step 300
300
#BBBAF3
oklch(81% 0.08 285.3)
-
Step 400
400
#9A94ED
oklch(70.8% 0.128 285.7)
-
Step 500
500
#8376E7
oklch(63.1% 0.165 285.9)
-
Step 600
600
#6E5CD5
oklch(55.6% 0.179 285.8)
-
Step 700
700
#5C4BB8
oklch(49.1% 0.165 285.7)
-
Step 800
800
#4B3E95
oklch(42.6% 0.137 285.8)
-
Step 900
900 (this color)
#372E6E
oklch(34.8% 0.107 285.9)
-
Step 950
950
#242046
oklch(27% 0.069 285.6)
#372E6E 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) | #093970 | 0.056 |
| Deuteranopia (no green cones) | #07366D | 0.056 |
| Tritanopia (no blue cones) | #243C49 | 0.089 |
| Achromatopsia (no color) | #383838 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #372E6E
#372E6E
oklch(34.8% 0.107 285.9)
- #3F3C00
#3F3C00
oklch(34.8% 0.074 106.5)
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 #372E6E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.061
- Marine Blue #01386A ΔE 0.061
- Marine #042E60 ΔE 0.067
- Dark Slate Blue #483D8B ΔE 0.069
- Twilight Blue #0A437A ΔE 0.070
- Midnight Blue #191970 ΔE 0.076
- Space Cadet #2B2D42 ΔE 0.082
- Royal Purple #4B006E ΔE 0.082
Use #372E6E 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.