#3C305B
Closest named color: Prussian Blue (#1D3557). oklch(34.4% 0.074 295.1), rgb(60, 48, 91).
Aa
White text reads best on this color (11.89:1).
About this color
#3C305B is a dark, moderately saturated purple. In OKLCH its lightness is 34%, its chroma 0.074 and its hue 295°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.049 away. White text reads best on it, at 11.89:1.
| Hue family | Purples |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.074) |
| Temperature | in between |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.76:1 |
| White text | 11.89:1 |
Values
| HEX | #3C305B |
| RGB | rgb(60, 48, 91) |
| HSL | hsl(257, 31%, 27%) |
| OKLCH | oklch(34.4% 0.074 295.1) |
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 #3C305B | 11.89:1 | AAA | Lc -100.8 | Preferred for body text |
| Black text on #3C305B | 1.76:1 | Fails | Lc 0.0 | Not readable |
| #3C305B text on white | 11.89:1 | AAA | Lc 97.2 | Preferred for body text |
| #3C305B text on black | 1.76:1 | 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
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#EAE8F4
oklch(93.6% 0.016 293.7)
-
Step 200
200
#DAD6EC
oklch(88.6% 0.03 294.1)
-
Step 300
300
#C3BAE1
oklch(80.9% 0.055 295.7)
-
Step 400
400
#A496D3
oklch(70.8% 0.089 294.6)
-
Step 500
500
#8F7BC7
oklch(63.2% 0.113 295.1)
-
Step 600
600
#7962B3
oklch(55.5% 0.124 295.1)
-
Step 700
700
#66519A
oklch(49% 0.115 295.1)
-
Step 800
800
#53437D
oklch(42.7% 0.095 294.8)
-
Step 900
900 (this color)
#3C305B
oklch(34.4% 0.074 295.1)
-
Step 950
950
#28213B
oklch(26.9% 0.048 295.4)
#3C305B 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) | #23375D | 0.042 |
| Deuteranopia (no green cones) | #25365A | 0.039 |
| Tritanopia (no blue cones) | #353841 | 0.060 |
| Achromatopsia (no color) | #373737 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3C305B
#3C305B
oklch(34.4% 0.074 295.1)
- #383D05
#383D05
oklch(34.4% 0.074 115)
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 #3C305B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.049
- Space Cadet #2B2D42 ΔE 0.055
- Gunmetal #293241 ΔE 0.060
- Dark Blue Grey #1F3B4D ΔE 0.062
- Onyx #343A40 ΔE 0.066
- Marine Blue #01386A ΔE 0.069
- Dark Grey Blue #29465B ΔE 0.071
- Marine #042E60 ΔE 0.072
Use #3C305B 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.