#372E74
Closest named color: Dark Slate Blue (#483D8B). oklch(35.3% 0.116 284.6), rgb(55, 46, 116).
Aa
White text reads best on this color (11.63:1).
About this color
#372E74 is a dark, moderately saturated purple. In OKLCH its lightness is 35%, its chroma 0.116 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.062 away. White text reads best on it, at 11.63:1.
| Hue family | Purples |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.80:1 |
| White text | 11.63:1 |
Values
| HEX | #372E74 |
| RGB | rgb(55, 46, 116) |
| HSL | hsl(248, 43%, 32%) |
| OKLCH | oklch(35.3% 0.116 284.6) |
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 #372E74 | 11.63:1 | AAA | Lc -100.1 | Preferred for body text |
| Black text on #372E74 | 1.80:1 | Fails | Lc 7.4 | Not readable |
| #372E74 text on white | 11.63:1 | AAA | Lc 96.5 | Preferred for body text |
| #372E74 text on black | 1.80:1 | 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
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E7E8FB
oklch(93.6% 0.026 283.5)
-
Step 200
200
#D5D5F9
oklch(88.4% 0.049 285.3)
-
Step 300
300
#BAB9F7
oklch(80.8% 0.087 285)
-
Step 400
400
#9893F3
oklch(70.7% 0.138 284.7)
-
Step 500
500
#8175EF
oklch(63.2% 0.177 284.6)
-
Step 600
600
#6C59DD
oklch(55.5% 0.193 284.8)
-
Step 700
700
#5B48C0
oklch(49.1% 0.18 284.9)
-
Step 800
800
#4A3C9B
oklch(42.7% 0.148 284.9)
-
Step 900
900 (this color)
#372E74
oklch(35.3% 0.116 284.6)
-
Step 950
950
#232048
oklch(27% 0.072 283.9)
#372E74 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) | #003B76 | 0.060 |
| Deuteranopia (no green cones) | #003673 | 0.058 |
| Tritanopia (no blue cones) | #203E4C | 0.097 |
| Achromatopsia (no color) | #393939 | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #372E74
#372E74
oklch(35.3% 0.116 284.6)
- #423D00
#423D00
oklch(35.4% 0.075 104.4)
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 #372E74, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.062
- Marine Blue #01386A ΔE 0.063
- Twilight Blue #0A437A ΔE 0.068
- Prussian Blue #1D3557 ΔE 0.068
- Marine #042E60 ΔE 0.072
- Midnight Blue #191970 ΔE 0.075
- Indigo #4B0082 ΔE 0.078
- Blueberry #464196 ΔE 0.078
Use #372E74 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.