#3C356B
Closest named color: Prussian Blue (#1D3557). oklch(36.5% 0.091 287), rgb(60, 53, 107).
Aa
White text reads best on this color (10.97:1).
About this color
#3C356B is a dark, moderately saturated purple. In OKLCH its lightness is 36%, its chroma 0.091 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.059 away. White text reads best on it, at 10.97:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.91:1 |
| White text | 10.97:1 |
Values
| HEX | #3C356B |
| RGB | rgb(60, 53, 107) |
| HSL | hsl(248, 34%, 31%) |
| OKLCH | oklch(36.5% 0.091 287) |
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 #3C356B | 10.97:1 | AAA | Lc -99.1 | Preferred for body text |
| Black text on #3C356B | 1.91:1 | Fails | Lc 8.6 | Not readable |
| #3C356B text on white | 10.97:1 | AAA | Lc 95.3 | Preferred for body text |
| #3C356B text on black | 1.91:1 | Fails | Lc -7.4 | 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
#F5F5FB
oklch(97.2% 0.008 286.3)
-
Step 100
100
#E8E8F7
oklch(93.5% 0.02 286)
-
Step 200
200
#D7D6F2
oklch(88.6% 0.038 287.2)
-
Step 300
300
#BDBBEB
oklch(81% 0.067 286.7)
-
Step 400
400
#9C96E1
oklch(70.7% 0.108 286.9)
-
Step 500
500
#857AD8
oklch(63.1% 0.138 287.1)
-
Step 600
600
#6F61C6
oklch(55.5% 0.152 286.7)
-
Step 700
700
#5E50AB
oklch(49.2% 0.14 287.1)
-
Step 800
800
#4C428A
oklch(42.7% 0.115 286.8)
-
Step 900
900 (this color)
#3C356B
oklch(36.5% 0.091 287)
-
Step 950
950
#252141
oklch(27% 0.058 287.5)
#3C356B 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) | #203E6D | 0.043 |
| Deuteranopia (no green cones) | #1F3B6A | 0.042 |
| Tritanopia (no blue cones) | #2E404B | 0.076 |
| Achromatopsia (no color) | #3C3C3C | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3C356B
#3C356B
oklch(36.5% 0.091 287)
- #434100
#434100
oklch(36.5% 0.079 107.8)
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 #3C356B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.059
- Dark Slate Blue #483D8B ΔE 0.060
- Twilight Blue #0A437A ΔE 0.063
- Marine Blue #01386A ΔE 0.063
- Dark Grey Blue #29465B ΔE 0.068
- Dark Blue Grey #1F3B4D ΔE 0.074
- Marine #042E60 ΔE 0.077
- Blueberry #464196 ΔE 0.078
Use #3C356B 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.