#372B59
Closest named color: Prussian Blue (#1D3557). oklch(32.7% 0.08 293.5), rgb(55, 43, 89).
Aa
White text reads best on this color (12.70:1).
About this color
#372B59 is a dark, moderately saturated purple. In OKLCH its lightness is 33%, its chroma 0.080 and its hue 294°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.047 away. White text reads best on it, at 12.70:1.
| Hue family | Purples |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.080) |
| Temperature | in between |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.65:1 |
| White text | 12.70:1 |
Values
| HEX | #372B59 |
| RGB | rgb(55, 43, 89) |
| HSL | hsl(256, 35%, 26%) |
| OKLCH | oklch(32.7% 0.08 293.5) |
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 #372B59 | 12.70:1 | AAA | Lc -102.0 | Preferred for body text |
| Black text on #372B59 | 1.65:1 | Fails | Lc 0.0 | Not readable |
| #372B59 text on white | 12.70:1 | AAA | Lc 98.6 | Preferred for body text |
| #372B59 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
#F5F4FA
oklch(97% 0.008 293.9)
-
Step 100
100
#EAE8F5
oklch(93.6% 0.018 293.1)
-
Step 200
200
#DAD5EE
oklch(88.5% 0.034 294.9)
-
Step 300
300
#C2BAE4
oklch(80.9% 0.059 293.8)
-
Step 400
400
#A395D7
oklch(70.7% 0.096 293.5)
-
Step 500
500
#8D7ACC
oklch(63.1% 0.122 293.2)
-
Step 600
600
#7861B9
oklch(55.5% 0.134 293.6)
-
Step 700
700
#65509F
oklch(49% 0.123 293.6)
-
Step 800
800
#524281
oklch(42.7% 0.102 293.3)
-
Step 900
900 (this color)
#372B59
oklch(32.7% 0.08 293.5)
-
Step 950
950
#28213D
oklch(27% 0.052 294.2)
#372B59 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) | #1B335B | 0.045 |
| Deuteranopia (no green cones) | #1D3258 | 0.043 |
| Tritanopia (no blue cones) | #2F343D | 0.065 |
| Achromatopsia (no color) | #333333 | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #372B59
#372B59
oklch(32.7% 0.08 293.5)
- #353800
#353800
oklch(32.7% 0.073 113.1)
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 #372B59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.047
- Space Cadet #2B2D42 ΔE 0.049
- Gunmetal #293241 ΔE 0.058
- Marine #042E60 ΔE 0.063
- Dark Blue Grey #1F3B4D ΔE 0.066
- Marine Blue #01386A ΔE 0.068
- Onyx #343A40 ΔE 0.073
- Oxford Blue #1B263B ΔE 0.075
Use #372B59 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.