#372E7C
Closest named color: Dark Slate Blue (#483D8B). oklch(35.9% 0.127 283.2), rgb(55, 46, 124).
Aa
White text reads best on this color (11.38:1).
About this color
#372E7C is a dark, moderately saturated purple. In OKLCH its lightness is 36%, its chroma 0.127 and its hue 283°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.055 away. White text reads best on it, at 11.38:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.84:1 |
| White text | 11.38:1 |
Values
| HEX | #372E7C |
| RGB | rgb(55, 46, 124) |
| HSL | hsl(247, 46%, 33%) |
| OKLCH | oklch(35.9% 0.127 283.2) |
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 #372E7C | 11.38:1 | AAA | Lc -99.7 | Preferred for body text |
| Black text on #372E7C | 1.84:1 | Fails | Lc 8.0 | Not readable |
| #372E7C text on white | 11.38:1 | AAA | Lc 95.9 | Preferred for body text |
| #372E7C text on black | 1.84:1 | 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
#F4F5FE
oklch(97.2% 0.012 281.1)
-
Step 100
100
#E7E8FC
oklch(93.6% 0.027 283.6)
-
Step 200
200
#D4D5FC
oklch(88.5% 0.053 284.1)
-
Step 300
300
#B8B9FD
oklch(80.9% 0.096 283.4)
-
Step 400
400
#9592FC
oklch(70.8% 0.152 283.1)
-
Step 500
500
#7E72F9
oklch(63.1% 0.195 283.3)
-
Step 600
600
#6955E8
oklch(55.5% 0.212 283.2)
-
Step 700
700
#5844CA
oklch(49% 0.198 283.1)
-
Step 800
800
#4839A3
oklch(42.6% 0.163 283.5)
-
Step 900
900 (this color)
#372E7C
oklch(35.9% 0.127 283.2)
-
Step 950
950
#221F4C
oklch(27% 0.081 282.6)
#372E7C 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) | #003C7F | 0.059 |
| Deuteranopia (no green cones) | #00377A | 0.057 |
| Tritanopia (no blue cones) | #194150 | 0.109 |
| Achromatopsia (no color) | #3A3A3A | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #372E7C
#372E7C
oklch(35.9% 0.127 283.2)
- #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 #372E7C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.055
- Twilight Blue #0A437A ΔE 0.068
- Marine Blue #01386A ΔE 0.069
- Blueberry #464196 ΔE 0.069
- Indigo #4B0082 ΔE 0.074
- Cobalt #1E488F ΔE 0.074
- Midnight Blue #191970 ΔE 0.077
- Prussian Blue #1D3557 ΔE 0.079
Use #372E7C 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.