#3A375B
Closest named color: Prussian Blue (#1D3557). oklch(35.7% 0.062 286.6), rgb(58, 55, 91).
Aa
White text reads best on this color (11.18:1).
About this color
#3A375B is a dark, muted purple. In OKLCH its lightness is 36%, its chroma 0.062 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.044 away. White text reads best on it, at 11.18:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | muted (0.062) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.87:1 |
| White text | 11.18:1 |
Values
| HEX | #3A375B |
| RGB | rgb(58, 55, 91) |
| HSL | hsl(245, 25%, 29%) |
| OKLCH | oklch(35.7% 0.062 286.6) |
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 #3A375B | 11.18:1 | AAA | Lc -99.6 | Preferred for body text |
| Black text on #3A375B | 1.87:1 | Fails | Lc 8.1 | Not readable |
| #3A375B text on white | 11.18:1 | AAA | Lc 95.8 | Preferred for body text |
| #3A375B text on black | 1.87:1 | 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
#E9E9F3
oklch(93.7% 0.013 286.1)
-
Step 200
200
#D7D7EA
oklch(88.5% 0.026 285.9)
-
Step 300
300
#BEBDDE
oklch(81% 0.046 286.7)
-
Step 400
400
#9D9ACD
oklch(70.7% 0.074 287)
-
Step 500
500
#8581C0
oklch(63.2% 0.094 286.3)
-
Step 600
600
#6F69AC
oklch(55.5% 0.103 286.7)
-
Step 700
700
#5D5794
oklch(49% 0.096 286.8)
-
Step 800
800
#4C4878
oklch(42.8% 0.078 286.4)
-
Step 900
900 (this color)
#3A375B
oklch(35.7% 0.062 286.6)
-
Step 950
950
#252339
oklch(26.9% 0.041 287.5)
#3A375B 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) | #2C3C5C | 0.025 |
| Deuteranopia (no green cones) | #2B3A5A | 0.024 |
| Tritanopia (no blue cones) | #323E44 | 0.054 |
| Achromatopsia (no color) | #3B3B3B | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A375B
#3A375B
oklch(35.7% 0.062 286.6)
- #403E13
#403E13
oklch(35.6% 0.062 106.6)
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 #3A375B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.044
- Dark Blue Grey #1F3B4D ΔE 0.050
- Dark Grey Blue #29465B ΔE 0.050
- Onyx #343A40 ΔE 0.053
- Gunmetal #293241 ΔE 0.056
- Space Cadet #2B2D42 ΔE 0.057
- Charcoal #264653 ΔE 0.058
- Charcoal Grey #3C4142 ΔE 0.062
Use #3A375B 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.