#372C7F
Closest named color: Dark Slate Blue (#483D8B). oklch(35.8% 0.134 283.3), rgb(55, 44, 127).
Aa
White text reads best on this color (11.48:1).
About this color
#372C7F is a dark, moderately saturated purple. In OKLCH its lightness is 36%, its chroma 0.134 and its hue 283°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.057 away. White text reads best on it, at 11.48:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.82:1 |
| White text | 11.48:1 |
Values
| HEX | #372C7F |
| RGB | rgb(55, 44, 127) |
| HSL | hsl(248, 49%, 34%) |
| OKLCH | oklch(35.8% 0.134 283.3) |
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 #372C7F | 11.48:1 | AAA | Lc -99.8 | Preferred for body text |
| Black text on #372C7F | 1.82:1 | Fails | Lc 7.9 | Not readable |
| #372C7F text on white | 11.48:1 | AAA | Lc 96.0 | Preferred for body text |
| #372C7F text on black | 1.82:1 | 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
#F4F4FF
oklch(97% 0.015 286.1)
-
Step 100
100
#E7E8FD
oklch(93.7% 0.028 283.7)
-
Step 200
200
#D3D5FE
oklch(88.5% 0.056 283)
-
Step 300
300
#B8B9FF
oklch(81% 0.098 283.3)
-
Step 400
400
#9591FF
oklch(70.8% 0.158 283.2)
-
Step 500
500
#7E6FFF
oklch(63% 0.206 283.5)
-
Step 600
600
#6A52EE
oklch(55.6% 0.223 283.4)
-
Step 700
700
#5941D0
oklch(49.2% 0.208 283.3)
-
Step 800
800
#4837A8
oklch(42.8% 0.172 283.2)
-
Step 900
900 (this color)
#372C7F
oklch(35.8% 0.134 283.3)
-
Step 950
950
#221E4E
oklch(27% 0.085 282.8)
#372C7F 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) | #003C82 | 0.061 |
| Deuteranopia (no green cones) | #00377D | 0.059 |
| Tritanopia (no blue cones) | #164051 | 0.113 |
| Achromatopsia (no color) | #393939 | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #372C7F
#372C7F
oklch(35.8% 0.134 283.3)
- #443E00
#443E00
oklch(35.9% 0.076 103.4)
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 #372C7F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.057
- Indigo #4B0082 ΔE 0.070
- Blueberry #464196 ΔE 0.070
- Twilight Blue #0A437A ΔE 0.072
- Marine Blue #01386A ΔE 0.073
- Midnight Blue #191970 ΔE 0.075
- Cobalt #1E488F ΔE 0.077
- Imperial Purple #480CA8 ΔE 0.080
Use #372C7F 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.