#372A64
Closest named color: Prussian Blue (#1D3557). oklch(33.3% 0.098 290.4), rgb(55, 42, 100).
Aa
White text reads best on this color (12.51:1).
About this color
#372A64 is a dark, moderately saturated purple. In OKLCH its lightness is 33%, its chroma 0.098 and its hue 290°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.056 away. White text reads best on it, at 12.51:1.
| Hue family | Purples |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.098) |
| Temperature | in between |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.67:1 |
| White text | 12.51:1 |
Values
| HEX | #372A64 |
| RGB | rgb(55, 42, 100) |
| HSL | hsl(253, 41%, 28%) |
| OKLCH | oklch(33.3% 0.098 290.4) |
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 #372A64 | 12.51:1 | AAA | Lc -101.6 | Preferred for body text |
| Black text on #372A64 | 1.67:1 | Fails | Lc 0.0 | Not readable |
| #372A64 text on white | 12.51:1 | AAA | Lc 98.2 | Preferred for body text |
| #372A64 text on black | 1.67:1 | 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
#F5F4FC
oklch(97% 0.011 292)
-
Step 100
100
#E9E8F8
oklch(93.6% 0.021 288.9)
-
Step 200
200
#D8D5F3
oklch(88.5% 0.041 290.1)
-
Step 300
300
#C0B9EE
oklch(81% 0.074 290.7)
-
Step 400
400
#A093E5
oklch(70.7% 0.118 290.3)
-
Step 500
500
#8A76DD
oklch(63% 0.151 290.3)
-
Step 600
600
#755DCA
oklch(55.6% 0.162 290.2)
-
Step 700
700
#634CAF
oklch(49.2% 0.151 290.4)
-
Step 800
800
#503F8E
oklch(42.8% 0.126 289.9)
-
Step 900
900 (this color)
#372A64
oklch(33.3% 0.098 290.4)
-
Step 950
950
#272042
oklch(27% 0.062 291.2)
#372A64 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) | #0D3566 | 0.058 |
| Deuteranopia (no green cones) | #0F3263 | 0.055 |
| Tritanopia (no blue cones) | #2A3642 | 0.080 |
| Achromatopsia (no color) | #343434 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #372A64
#372A64
oklch(33.3% 0.098 290.4)
- #383900
#383900
oklch(33.3% 0.073 110.9)
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 #372A64, 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 #042E60 ΔE 0.064
- Marine Blue #01386A ΔE 0.066
- Space Cadet #2B2D42 ΔE 0.067
- Midnight Blue #191970 ΔE 0.073
- Gunmetal #293241 ΔE 0.076
- Royal Purple #4B006E ΔE 0.077
- Dark Blue Grey #1F3B4D ΔE 0.079
Use #372A64 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.