#372C61
Closest named color: Prussian Blue (#1D3557). oklch(33.4% 0.09 290.2), rgb(55, 44, 97).
Aa
White text reads best on this color (12.38:1).
About this color
#372C61 is a dark, moderately saturated purple. In OKLCH its lightness is 33%, its chroma 0.090 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 0.050 away. White text reads best on it, at 12.38:1.
| Hue family | Purples |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.090) |
| Temperature | in between |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.69:1 |
| White text | 12.38:1 |
Values
| HEX | #372C61 |
| RGB | rgb(55, 44, 97) |
| HSL | hsl(252, 38%, 28%) |
| OKLCH | oklch(33.4% 0.09 290.2) |
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 #372C61 | 12.38:1 | AAA | Lc -101.5 | Preferred for body text |
| Black text on #372C61 | 1.69:1 | Fails | Lc 0.0 | Not readable |
| #372C61 text on white | 12.38:1 | AAA | Lc 98.0 | Preferred for body text |
| #372C61 text on black | 1.69:1 | 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
#F5F4FB
oklch(97% 0.009 292.8)
-
Step 100
100
#E9E8F6
oklch(93.6% 0.019 289.3)
-
Step 200
200
#D8D5F1
oklch(88.4% 0.038 290.5)
-
Step 300
300
#BFBAEA
oklch(80.9% 0.067 289.6)
-
Step 400
400
#A095DF
oklch(70.8% 0.107 290.2)
-
Step 500
500
#8A79D7
oklch(63.3% 0.138 290.2)
-
Step 600
600
#7460C4
oklch(55.7% 0.15 289.8)
-
Step 700
700
#624EA9
oklch(49% 0.14 290.4)
-
Step 800
800
#504189
oklch(42.8% 0.115 290.2)
-
Step 900
900 (this color)
#372C61
oklch(33.4% 0.09 290.2)
-
Step 950
950
#262140
oklch(27% 0.057 289.5)
#372C61 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) | #163563 | 0.049 |
| Deuteranopia (no green cones) | #173360 | 0.048 |
| Tritanopia (no blue cones) | #2B3742 | 0.074 |
| Achromatopsia (no color) | #343434 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #372C61
#372C61
oklch(33.4% 0.09 290.2)
- #393900
#393900
oklch(33.4% 0.073 109.8)
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 #372C61, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.050
- Space Cadet #2B2D42 ΔE 0.061
- Marine #042E60 ΔE 0.063
- Marine Blue #01386A ΔE 0.063
- Gunmetal #293241 ΔE 0.069
- Dark Blue Grey #1F3B4D ΔE 0.072
- Midnight Blue #191970 ΔE 0.079
- Twilight Blue #0A437A ΔE 0.081
Use #372C61 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.