#372D72
Closest named color: Marine Blue (#01386A). oklch(34.9% 0.114 285.5), rgb(55, 45, 114).
Aa
White text reads best on this color (11.79:1).
About this color
#372D72 is a dark, moderately saturated purple. In OKLCH its lightness is 35%, its chroma 0.114 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.063 away. White text reads best on it, at 11.79:1.
| Hue family | Purples |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.114) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.78:1 |
| White text | 11.79:1 |
Values
| HEX | #372D72 |
| RGB | rgb(55, 45, 114) |
| HSL | hsl(249, 43%, 31%) |
| OKLCH | oklch(34.9% 0.114 285.5) |
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 #372D72 | 11.79:1 | AAA | Lc -100.4 | Preferred for body text |
| Black text on #372D72 | 1.78:1 | Fails | Lc 0.0 | Not readable |
| #372D72 text on white | 11.79:1 | AAA | Lc 96.8 | Preferred for body text |
| #372D72 text on black | 1.78:1 | 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
#F4F4FD
oklch(97% 0.012 286.2)
-
Step 100
100
#E8E8FA
oklch(93.6% 0.024 285.9)
-
Step 200
200
#D5D5F8
oklch(88.4% 0.048 285.4)
-
Step 300
300
#BBB9F6
oklch(80.9% 0.086 285.8)
-
Step 400
400
#9993F2
oklch(70.8% 0.137 285.2)
-
Step 500
500
#8274ED
oklch(63% 0.176 285.5)
-
Step 600
600
#6E59DB
oklch(55.5% 0.19 285.8)
-
Step 700
700
#5C48BE
oklch(49% 0.177 285.6)
-
Step 800
800
#4B3C9A
oklch(42.7% 0.147 285.6)
-
Step 900
900 (this color)
#372D72
oklch(34.9% 0.114 285.5)
-
Step 950
950
#242048
oklch(27.1% 0.072 285.1)
#372D72 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) | #003A74 | 0.061 |
| Deuteranopia (no green cones) | #003671 | 0.060 |
| Tritanopia (no blue cones) | #223D4B | 0.096 |
| Achromatopsia (no color) | #383838 | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #372D72
#372D72
oklch(34.9% 0.114 285.5)
- #403C00
#403C00
oklch(34.9% 0.074 105.4)
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 #372D72, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.063
- Dark Slate Blue #483D8B ΔE 0.066
- Prussian Blue #1D3557 ΔE 0.067
- Marine #042E60 ΔE 0.070
- Twilight Blue #0A437A ΔE 0.070
- Midnight Blue #191970 ΔE 0.074
- Indigo #4B0082 ΔE 0.077
- Royal Purple #4B006E ΔE 0.080
Use #372D72 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.