#3C2173
Closest named color: Indigo (#4B0082). oklch(33.5% 0.133 292.9), rgb(60, 33, 115).
Aa
White text reads best on this color (12.67:1).
About this color
#3C2173 is a dark, moderately saturated purple. In OKLCH its lightness is 33%, its chroma 0.133 and its hue 293°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Indigo (#4B0082), ΔE 0.052 away. White text reads best on it, at 12.67:1.
| Hue family | Purples |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.133) |
| Temperature | in between |
| Nearest name | Indigo (#4B0082) |
| Black text | 1.65:1 |
| White text | 12.67:1 |
Values
| HEX | #3C2173 |
| RGB | rgb(60, 33, 115) |
| HSL | hsl(260, 55%, 29%) |
| OKLCH | oklch(33.5% 0.133 292.9) |
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 #3C2173 | 12.67:1 | AAA | Lc -101.6 | Preferred for body text |
| Black text on #3C2173 | 1.65:1 | Fails | Lc 0.0 | Not readable |
| #3C2173 text on white | 12.67:1 | AAA | Lc 98.2 | Preferred for body text |
| #3C2173 text on black | 1.65:1 | 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
#F5F4FE
oklch(97.1% 0.013 290.8)
-
Step 100
100
#EAE7FC
oklch(93.7% 0.028 292.4)
-
Step 200
200
#DAD3FB
oklch(88.5% 0.055 293.3)
-
Step 300
300
#C3B5FC
oklch(81% 0.1 293.1)
-
Step 400
400
#A58BFA
oklch(70.7% 0.159 292.6)
-
Step 500
500
#9269F7
oklch(63.2% 0.203 293)
-
Step 600
600
#7E4AE6
oklch(55.6% 0.222 293.1)
-
Step 700
700
#6A3AC8
oklch(49.1% 0.206 292.6)
-
Step 800
800
#5631A1
oklch(42.6% 0.17 292.9)
-
Step 900
900 (this color)
#3C2173
oklch(33.5% 0.133 292.9)
-
Step 950
950
#291C4B
oklch(27.1% 0.084 292.7)
#3C2173 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) | #003475 | 0.078 |
| Deuteranopia (no green cones) | #003171 | 0.077 |
| Tritanopia (no blue cones) | #2C3547 | 0.104 |
| Achromatopsia (no color) | #333333 | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3C2173
#3C2173
oklch(33.5% 0.133 292.9)
- #373A00
#373A00
oklch(33.4% 0.075 113)
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 #3C2173, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Indigo #4B0082 ΔE 0.052
- Royal Purple #4B006E ΔE 0.054
- Midnight Blue #191970 ΔE 0.068
- Dark Slate Blue #483D8B ΔE 0.081
- Plum Purple #4E0550 ΔE 0.084
- Marine #042E60 ΔE 0.085
- Marine Blue #01386A ΔE 0.087
- Prussian Blue #1D3557 ΔE 0.087
Use #3C2173 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.