#372771
Closest named color: Midnight Blue (#191970). oklch(33.8% 0.122 288), rgb(55, 39, 113).
Aa
White text reads best on this color (12.41:1).
About this color
#372771 is a dark, moderately saturated purple. In OKLCH its lightness is 34%, its chroma 0.122 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Blue (#191970), ΔE 0.064 away. White text reads best on it, at 12.41:1.
| Hue family | Purples |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.122) |
| Temperature | cool |
| Nearest name | Midnight Blue (#191970) |
| Black text | 1.69:1 |
| White text | 12.41:1 |
Values
| HEX | #372771 |
| RGB | rgb(55, 39, 113) |
| HSL | hsl(253, 49%, 30%) |
| OKLCH | oklch(33.8% 0.122 288) |
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 #372771 | 12.41:1 | AAA | Lc -101.3 | Preferred for body text |
| Black text on #372771 | 1.69:1 | Fails | Lc 0.0 | Not readable |
| #372771 text on white | 12.41:1 | AAA | Lc 97.9 | Preferred for body text |
| #372771 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#E8E7FB
oklch(93.5% 0.027 288.2)
-
Step 200
200
#D7D5FA
oklch(88.6% 0.051 287.8)
-
Step 300
300
#BDB8F9
oklch(81% 0.091 287.7)
-
Step 400
400
#9D90F6
oklch(70.7% 0.146 287.9)
-
Step 500
500
#8770F2
oklch(63% 0.187 287.9)
-
Step 600
600
#7354E0
oklch(55.6% 0.203 288.1)
-
Step 700
700
#6143C3
oklch(49.1% 0.189 288.1)
-
Step 800
800
#4F399D
oklch(42.8% 0.155 288.2)
-
Step 900
900 (this color)
#372771
oklch(33.8% 0.122 288)
-
Step 950
950
#261E49
oklch(27% 0.077 288.7)
#372771 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) | #003673 | 0.066 |
| Deuteranopia (no green cones) | #00326F | 0.064 |
| Tritanopia (no blue cones) | #233948 | 0.101 |
| Achromatopsia (no color) | #343434 | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #372771
#372771
oklch(33.8% 0.122 288)
- #3B3A00
#3B3A00
oklch(33.8% 0.073 108.7)
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 #372771, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Blue #191970 ΔE 0.064
- Indigo #4B0082 ΔE 0.067
- Royal Purple #4B006E ΔE 0.069
- Marine Blue #01386A ΔE 0.071
- Marine #042E60 ΔE 0.071
- Prussian Blue #1D3557 ΔE 0.073
- Dark Slate Blue #483D8B ΔE 0.077
- Twilight Blue #0A437A ΔE 0.083
Use #372771 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.