#373470
Closest named color: Marine Blue (#01386A). oklch(36.2% 0.101 282.4), rgb(55, 52, 112).
Aa
White text reads best on this color (11.12:1).
About this color
#373470 is a dark, moderately saturated purple. In OKLCH its lightness is 36%, its chroma 0.101 and its hue 282°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.057 away. White text reads best on it, at 11.12:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.88:1 |
| White text | 11.12:1 |
Values
| HEX | #373470 |
| RGB | rgb(55, 52, 112) |
| HSL | hsl(243, 37%, 32%) |
| OKLCH | oklch(36.2% 0.101 282.4) |
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 #373470 | 11.12:1 | AAA | Lc -99.3 | Preferred for body text |
| Black text on #373470 | 1.88:1 | Fails | Lc 8.4 | Not readable |
| #373470 text on white | 11.12:1 | AAA | Lc 95.5 | Preferred for body text |
| #373470 text on black | 1.88:1 | 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
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E7E8F9
oklch(93.5% 0.023 283.3)
-
Step 200
200
#D4D6F5
oklch(88.4% 0.043 282.6)
-
Step 300
300
#B9BBF1
oklch(80.9% 0.076 282.9)
-
Step 400
400
#9596EA
oklch(70.6% 0.122 282.3)
-
Step 500
500
#7D7AE3
oklch(63.1% 0.154 282.3)
-
Step 600
600
#6861D1
oklch(55.7% 0.167 282.3)
-
Step 700
700
#574FB5
oklch(49.1% 0.156 282.5)
-
Step 800
800
#474192
oklch(42.6% 0.129 282.8)
-
Step 900
900 (this color)
#373470
oklch(36.2% 0.101 282.4)
-
Step 950
950
#222144
oklch(26.9% 0.064 282.5)
#373470 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) | #173E72 | 0.045 |
| Deuteranopia (no green cones) | #13396F | 0.045 |
| Tritanopia (no blue cones) | #22414C | 0.087 |
| Achromatopsia (no color) | #3B3B3B | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #373470
#373470
oklch(36.2% 0.101 282.4)
- #453F00
#453F00
oklch(36.2% 0.076 103.5)
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 #373470, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.057
- Twilight Blue #0A437A ΔE 0.057
- Dark Slate Blue #483D8B ΔE 0.059
- Prussian Blue #1D3557 ΔE 0.059
- Marine #042E60 ΔE 0.071
- Cobalt #1E488F ΔE 0.073
- Dark Grey Blue #29465B ΔE 0.073
- Blueberry #464196 ΔE 0.075
Use #373470 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.