#372E6A
Closest named color: Prussian Blue (#1D3557). oklch(34.5% 0.101 286.7), rgb(55, 46, 106).
Aa
White text reads best on this color (11.92:1).
About this color
#372E6A is a dark, moderately saturated purple. In OKLCH its lightness is 34%, its chroma 0.101 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.056 away. White text reads best on it, at 11.92:1.
| Hue family | Purples |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.76:1 |
| White text | 11.92:1 |
Values
| HEX | #372E6A |
| RGB | rgb(55, 46, 106) |
| HSL | hsl(249, 39%, 30%) |
| OKLCH | oklch(34.5% 0.101 286.7) |
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 #372E6A | 11.92:1 | AAA | Lc -100.7 | Preferred for body text |
| Black text on #372E6A | 1.76:1 | Fails | Lc 0.0 | Not readable |
| #372E6A text on white | 11.92:1 | AAA | Lc 97.1 | Preferred for body text |
| #372E6A text on black | 1.76:1 | 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
#F5F5FC
oklch(97.2% 0.009 286.2)
-
Step 100
100
#E8E8F8
oklch(93.6% 0.022 286)
-
Step 200
200
#D6D6F4
oklch(88.5% 0.041 285.5)
-
Step 300
300
#BCBAF0
oklch(80.9% 0.076 286.3)
-
Step 400
400
#9B94E8
oklch(70.6% 0.121 286.7)
-
Step 500
500
#8578E1
oklch(63.2% 0.154 286.8)
-
Step 600
600
#6F5ECF
oklch(55.6% 0.168 286.5)
-
Step 700
700
#5E4DB3
oklch(49.2% 0.155 286.9)
-
Step 800
800
#4C3F91
oklch(42.6% 0.13 286.8)
-
Step 900
900 (this color)
#372E6A
oklch(34.5% 0.101 286.7)
-
Step 950
950
#252144
oklch(27.2% 0.063 286.6)
#372E6A 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) | #10386C | 0.052 |
| Deuteranopia (no green cones) | #0F3569 | 0.052 |
| Tritanopia (no blue cones) | #273B47 | 0.084 |
| Achromatopsia (no color) | #373737 | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #372E6A
#372E6A
oklch(34.5% 0.101 286.7)
- #3E3B00
#3E3B00
oklch(34.4% 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 #372E6A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.056
- Marine Blue #01386A ΔE 0.060
- Marine #042E60 ΔE 0.065
- Twilight Blue #0A437A ΔE 0.071
- Dark Slate Blue #483D8B ΔE 0.073
- Space Cadet #2B2D42 ΔE 0.075
- Midnight Blue #191970 ΔE 0.077
- Dark Blue Grey #1F3B4D ΔE 0.078
Use #372E6A 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.