#371F70
Closest named color: Royal Purple (#4B006E). oklch(32.4% 0.131 290.8), rgb(55, 31, 112).
Aa
White text reads best on this color (13.18:1).
About this color
#371F70 is a dark, moderately saturated purple. In OKLCH its lightness is 32%, its chroma 0.131 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Royal Purple (#4B006E), ΔE 0.057 away. White text reads best on it, at 13.18:1.
| Hue family | Purples |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.131) |
| Temperature | in between |
| Nearest name | Royal Purple (#4B006E) |
| Black text | 1.59:1 |
| White text | 13.18:1 |
Values
| HEX | #371F70 |
| RGB | rgb(55, 31, 112) |
| HSL | hsl(258, 57%, 28%) |
| OKLCH | oklch(32.4% 0.131 290.8) |
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 #371F70 | 13.18:1 | AAA | Lc -102.3 | Preferred for body text |
| Black text on #371F70 | 1.59:1 | Fails | Lc 0.0 | Not readable |
| #371F70 text on white | 13.18:1 | AAA | Lc 99.0 | Preferred for body text |
| #371F70 text on black | 1.59:1 | 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
#F5F4FE
oklch(97.1% 0.013 290.8)
-
Step 100
100
#E9E7FC
oklch(93.6% 0.028 290.2)
-
Step 200
200
#D8D4FB
oklch(88.5% 0.053 290)
-
Step 300
300
#C0B6FC
oklch(80.9% 0.098 290.6)
-
Step 400
400
#A28CFA
oklch(70.6% 0.157 291)
-
Step 500
500
#8D6BF8
oklch(63.1% 0.202 290.6)
-
Step 600
600
#794DE6
oklch(55.6% 0.218 290.7)
-
Step 700
700
#673CC8
oklch(49.1% 0.204 291.1)
-
Step 800
800
#5333A2
oklch(42.6% 0.169 290.7)
-
Step 900
900 (this color)
#371F70
oklch(32.4% 0.131 290.8)
-
Step 950
950
#281C4B
oklch(27% 0.084 291.6)
#371F70 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) | #003172 | 0.072 |
| Deuteranopia (no green cones) | #002E6E | 0.071 |
| Tritanopia (no blue cones) | #243345 | 0.104 |
| Achromatopsia (no color) | #303030 | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #371F70
#371F70
oklch(32.4% 0.131 290.8)
- #363700
#363700
oklch(32.5% 0.071 110.9)
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 #371F70, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Purple #4B006E ΔE 0.057
- Midnight Blue #191970 ΔE 0.057
- Indigo #4B0082 ΔE 0.058
- Marine #042E60 ΔE 0.077
- Marine Blue #01386A ΔE 0.083
- Prussian Blue #1D3557 ΔE 0.084
- Plum Purple #4E0550 ΔE 0.085
- Dark Indigo #1F0954 ΔE 0.086
Use #371F70 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.