#373552
Closest named color: Prussian Blue (#1D3557). oklch(34.4% 0.05 286.6), rgb(55, 53, 82).
Aa
White text reads best on this color (11.70:1).
About this color
#373552 is a dark, muted purple. In OKLCH its lightness is 34%, its chroma 0.050 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 11.70:1.
| Hue family | Purples |
| Lightness | dark (34%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.79:1 |
| White text | 11.70:1 |
Values
| HEX | #373552 |
| RGB | rgb(55, 53, 82) |
| HSL | hsl(244, 21%, 26%) |
| OKLCH | oklch(34.4% 0.05 286.6) |
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 #373552 | 11.70:1 | AAA | Lc -100.5 | Preferred for body text |
| Black text on #373552 | 1.79:1 | Fails | Lc 0.0 | Not readable |
| #373552 text on white | 11.70:1 | AAA | Lc 96.9 | Preferred for body text |
| #373552 text on black | 1.79:1 | 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E9E9F1
oklch(93.6% 0.011 286.2)
-
Step 200
200
#D8D7E7
oklch(88.5% 0.022 288.8)
-
Step 300
300
#BEBDD8
oklch(80.8% 0.038 287.2)
-
Step 400
400
#9D9BC5
oklch(70.6% 0.061 286.9)
-
Step 500
500
#8683B6
oklch(63.2% 0.076 286.7)
-
Step 600
600
#706CA2
oklch(55.7% 0.083 286.8)
-
Step 700
700
#5D5A8B
oklch(49.1% 0.078 286)
-
Step 800
800
#4C4971
oklch(42.6% 0.066 286.7)
-
Step 900
900 (this color)
#373552
oklch(34.4% 0.05 286.6)
-
Step 950
950
#252435
oklch(26.9% 0.031 286.8)
#373552 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) | #2D3953 | 0.019 |
| Deuteranopia (no green cones) | #2C3751 | 0.018 |
| Tritanopia (no blue cones) | #313A3F | 0.043 |
| Achromatopsia (no color) | #383838 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #373552
#373552
oklch(34.4% 0.05 286.6)
- #3C3B1A
#3C3B1A
oklch(34.5% 0.051 107.2)
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 #373552, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.038
- Gunmetal #293241 ΔE 0.040
- Dark Blue Grey #1F3B4D ΔE 0.040
- Onyx #343A40 ΔE 0.041
- Space Cadet #2B2D42 ΔE 0.042
- Dark Grey Blue #29465B ΔE 0.053
- Charcoal Grey #3C4142 ΔE 0.056
- Charcoal #264653 ΔE 0.057
Use #373552 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.