#3C4785
Closest named color: Dark Slate Blue (#483D8B). oklch(42.1% 0.103 273.6), rgb(60, 71, 133).
Aa
White text reads best on this color (8.63:1).
About this color
#3C4785 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.103 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 8.63:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.43:1 |
| White text | 8.63:1 |
Values
| HEX | #3C4785 |
| RGB | rgb(60, 71, 133) |
| HSL | hsl(231, 38%, 38%) |
| OKLCH | oklch(42.1% 0.103 273.6) |
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 #3C4785 | 8.63:1 | AAA | Lc -94.0 | Preferred for body text |
| Black text on #3C4785 | 2.43:1 | Fails | Lc 14.5 | Not readable |
| #3C4785 text on white | 8.63:1 | AAA | Lc 89.5 | Fine for body text |
| #3C4785 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
#B4BFE8
oklch(81% 0.059 273.2)
-
Step 400
400
#8D9CDD
oklch(70.6% 0.097 273.7)
-
Step 500
500
#7283D4
oklch(63.2% 0.123 273.4)
-
Step 600
600
#5B6BC1
oklch(55.6% 0.134 273.4)
-
Step 700
700
#4B59A7
oklch(49.2% 0.125 273.3)
-
Step 800
800 (this color)
#3C4785
oklch(42.1% 0.103 273.6)
-
Step 900
900
#343D6C
oklch(37.6% 0.081 273.7)
-
Step 950
950
#1F243F
oklch(27% 0.051 274.5)
#3C4785 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) | #2C4F87 | 0.027 |
| Deuteranopia (no green cones) | #244984 | 0.028 |
| Tritanopia (no blue cones) | #19545F | 0.092 |
| Achromatopsia (no color) | #4C4C4C | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3C4785
#3C4785
oklch(42.1% 0.103 273.6)
- #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 #3C4785, 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
- Cobalt #1E488F ΔE 0.036
- Blueberry #464196 ΔE 0.037
- Dusk Blue #26538D ΔE 0.039
- Twilight #4E518B ΔE 0.042
- Light Navy #155084 ΔE 0.043
- Dusk #4E5481 ΔE 0.050
- Light Navy Blue #2E5A88 ΔE 0.055
Use #3C4785 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.