#3C4786
Closest named color: Dark Slate Blue (#483D8B). oklch(42.1% 0.105 273.6), rgb(60, 71, 134).
Aa
White text reads best on this color (8.61:1).
About this color
#3C4786 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.105 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.033 away. White text reads best on it, at 8.61:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.43:1 |
| White text | 8.61:1 |
Values
| HEX | #3C4786 |
| RGB | rgb(60, 71, 134) |
| HSL | hsl(231, 38%, 38%) |
| OKLCH | oklch(42.1% 0.105 273.6) |
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 #3C4786 | 8.61:1 | AAA | Lc -93.9 | Preferred for body text |
| Black text on #3C4786 | 2.43:1 | Fails | Lc 14.6 | Not readable |
| #3C4786 text on white | 8.61:1 | AAA | Lc 89.4 | Fine for body text |
| #3C4786 text on black | 2.43:1 | Fails | Lc -12.8 | 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 800.
-
Step 50
50
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E6E9F6
oklch(93.6% 0.018 275.6)
-
Step 200
200
#D2D8F0
oklch(88.5% 0.034 274.5)
-
Step 300
300
#B4BFE9
oklch(81% 0.061 273.5)
-
Step 400
400
#8D9CDE
oklch(70.7% 0.098 273.8)
-
Step 500
500
#7282D5
oklch(63% 0.126 274)
-
Step 600
600
#5B6AC2
oklch(55.5% 0.137 273.8)
-
Step 700
700
#4B58A8
oklch(49.1% 0.128 273.8)
-
Step 800
800 (this color)
#3C4786
oklch(42.1% 0.105 273.6)
-
Step 900
900
#343D6D
oklch(37.7% 0.083 273.8)
-
Step 950
950
#1E2440
oklch(27% 0.053 273.2)
#3C4786 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) | #2B4F88 | 0.028 |
| Deuteranopia (no green cones) | #234985 | 0.029 |
| Tritanopia (no blue cones) | #185560 | 0.093 |
| Achromatopsia (no color) | #4C4C4C | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3C4786
#3C4786
oklch(42.1% 0.105 273.6)
- #5D4C00
#5D4C00
oklch(42.2% 0.086 94.1)
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 #3C4786, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.033
- Blueberry #464196 ΔE 0.035
- Cobalt #1E488F ΔE 0.035
- Dusk Blue #26538D ΔE 0.038
- Twilight #4E518B ΔE 0.041
- Light Navy #155084 ΔE 0.043
- Dusk #4E5481 ΔE 0.051
- Light Navy Blue #2E5A88 ΔE 0.055
Use #3C4786 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.