#373358
Closest named color: Prussian Blue (#1D3557). oklch(34.3% 0.064 287.5), rgb(55, 51, 88).
Aa
White text reads best on this color (11.81:1).
About this color
#373358 is a dark, muted purple. In OKLCH its lightness is 34%, its chroma 0.064 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.038 away. White text reads best on it, at 11.81:1.
| Hue family | Purples |
| Lightness | dark (34%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.77:1 |
| White text | 11.81:1 |
Values
| HEX | #373358 |
| RGB | rgb(55, 51, 88) |
| HSL | hsl(246, 27%, 27%) |
| OKLCH | oklch(34.3% 0.064 287.5) |
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 #373358 | 11.81:1 | AAA | Lc -100.7 | Preferred for body text |
| Black text on #373358 | 1.77:1 | Fails | Lc 0.0 | Not readable |
| #373358 text on white | 11.81:1 | AAA | Lc 97.1 | Preferred for body text |
| #373358 text on black | 1.77:1 | 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
#F5F5FA
oklch(97.2% 0.007 286.3)
-
Step 100
100
#E9E9F3
oklch(93.7% 0.013 286.1)
-
Step 200
200
#D8D7EA
oklch(88.6% 0.026 288.3)
-
Step 300
300
#BEBCDF
oklch(80.8% 0.049 287.9)
-
Step 400
400
#9D9ACE
oklch(70.8% 0.075 286.9)
-
Step 500
500
#8680C2
oklch(63.2% 0.098 287.4)
-
Step 600
600
#7068AE
oklch(55.5% 0.107 287.6)
-
Step 700
700
#5E5795
oklch(49.2% 0.098 287.4)
-
Step 800
800
#4D4779
oklch(42.7% 0.082 287.9)
-
Step 900
900 (this color)
#373358
oklch(34.3% 0.064 287.5)
-
Step 950
950
#252339
oklch(26.9% 0.041 287.5)
#373358 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) | #273859 | 0.027 |
| Deuteranopia (no green cones) | #273757 | 0.027 |
| Tritanopia (no blue cones) | #2F3A41 | 0.054 |
| Achromatopsia (no color) | #373737 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #373358
#373358
oklch(34.3% 0.064 287.5)
- #3C3B0D
#3C3B0D
oklch(34.3% 0.064 108.1)
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 #373358, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.038
- Space Cadet #2B2D42 ΔE 0.047
- Gunmetal #293241 ΔE 0.049
- Dark Blue Grey #1F3B4D ΔE 0.049
- Onyx #343A40 ΔE 0.054
- Dark Grey Blue #29465B ΔE 0.060
- Marine Blue #01386A ΔE 0.062
- Midnight Green #073B4C ΔE 0.065
Use #373358 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.