#3C3671
Closest named color: Dark Slate Blue (#483D8B). oklch(37.1% 0.098 285.2), rgb(60, 54, 113).
Aa
White text reads best on this color (10.72:1).
About this color
#3C3671 is a dark, moderately saturated purple. In OKLCH its lightness is 37%, its chroma 0.098 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.051 away. White text reads best on it, at 10.72:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.95:1 |
| White text | 10.72:1 |
Values
| HEX | #3C3671 |
| RGB | rgb(60, 54, 113) |
| HSL | hsl(246, 35%, 33%) |
| OKLCH | oklch(37.1% 0.098 285.2) |
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 #3C3671 | 10.72:1 | AAA | Lc -98.6 | Preferred for body text |
| Black text on #3C3671 | 1.95:1 | Fails | Lc 9.2 | Not readable |
| #3C3671 text on white | 10.72:1 | AAA | Lc 94.7 | Preferred for body text |
| #3C3671 text on black | 1.95:1 | Fails | Lc -7.9 | 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
#E8E8F8
oklch(93.6% 0.022 286)
-
Step 200
200
#D6D6F4
oklch(88.5% 0.041 285.5)
-
Step 300
300
#BBBBEF
oklch(81% 0.073 284.7)
-
Step 400
400
#9995E7
oklch(70.6% 0.119 285.2)
-
Step 500
500
#8279E0
oklch(63.1% 0.151 285.2)
-
Step 600
600
#6D60CD
oklch(55.7% 0.163 285.2)
-
Step 700
700
#5B4EB2
oklch(49.1% 0.153 285.2)
-
Step 800
800
#4A4190
oklch(42.7% 0.126 284.9)
-
Step 900
900 (this color)
#3C3671
oklch(37.1% 0.098 285.2)
-
Step 950
950
#242143
oklch(27% 0.062 285.5)
#3C3671 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) | #1C4073 | 0.047 |
| Deuteranopia (no green cones) | #1B3C70 | 0.045 |
| Tritanopia (no blue cones) | #2B424E | 0.082 |
| Achromatopsia (no color) | #3E3E3E | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3C3671
#3C3671
oklch(37.1% 0.098 285.2)
- #464200
#464200
oklch(37.1% 0.079 105.8)
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 #3C3671, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.051
- Twilight Blue #0A437A ΔE 0.059
- Marine Blue #01386A ΔE 0.065
- Prussian Blue #1D3557 ΔE 0.066
- Blueberry #464196 ΔE 0.069
- Cobalt #1E488F ΔE 0.071
- Dark Grey Blue #29465B ΔE 0.072
- Light Navy #155084 ΔE 0.081
Use #3C3671 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.