#372768
Closest named color: Prussian Blue (#1D3557). oklch(33% 0.109 290.5), rgb(55, 39, 104).
Aa
White text reads best on this color (12.70:1).
About this color
#372768 is a dark, moderately saturated purple. In OKLCH its lightness is 33%, its chroma 0.109 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.064 away. White text reads best on it, at 12.70:1.
| Hue family | Purples |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.109) |
| Temperature | in between |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.65:1 |
| White text | 12.70:1 |
Values
| HEX | #372768 |
| RGB | rgb(55, 39, 104) |
| HSL | hsl(255, 45%, 28%) |
| OKLCH | oklch(33% 0.109 290.5) |
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 #372768 | 12.70:1 | AAA | Lc -101.9 | Preferred for body text |
| Black text on #372768 | 1.65:1 | Fails | Lc 0.0 | Not readable |
| #372768 text on white | 12.70:1 | AAA | Lc 98.5 | Preferred for body text |
| #372768 text on black | 1.65:1 | 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
#E9E7F9
oklch(93.5% 0.024 291)
-
Step 200
200
#D8D5F6
oklch(88.6% 0.045 289.6)
-
Step 300
300
#C0B8F2
oklch(80.9% 0.081 290.8)
-
Step 400
400
#A191EC
oklch(70.7% 0.131 290.7)
-
Step 500
500
#8B73E6
oklch(63.1% 0.167 290.4)
-
Step 600
600
#7658D3
oklch(55.5% 0.181 290.5)
-
Step 700
700
#6447B7
oklch(49.1% 0.169 290.8)
-
Step 800
800
#513B94
oklch(42.6% 0.14 290.6)
-
Step 900
900 (this color)
#372768
oklch(33% 0.109 290.5)
-
Step 950
950
#271F45
oklch(27% 0.069 290.8)
#372768 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) | #00346A | 0.067 |
| Deuteranopia (no green cones) | #003167 | 0.066 |
| Tritanopia (no blue cones) | #283643 | 0.090 |
| Achromatopsia (no color) | #333333 | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #372768
#372768
oklch(33% 0.109 290.5)
- #383800
#383800
oklch(33% 0.072 109.8)
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 #372768, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.064
- Marine #042E60 ΔE 0.066
- Midnight Blue #191970 ΔE 0.067
- Royal Purple #4B006E ΔE 0.070
- Marine Blue #01386A ΔE 0.070
- Indigo #4B0082 ΔE 0.076
- Space Cadet #2B2D42 ΔE 0.076
- Plum Purple #4E0550 ΔE 0.084
Use #372768 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.