#3D4884
Closest named color: Dark Slate Blue (#483D8B). oklch(42.3% 0.1 273.5), rgb(61, 72, 132).
Aa
White text reads best on this color (8.54:1).
About this color
#3D4884 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.100 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.036 away. White text reads best on it, at 8.54:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.45:1 |
| White text | 8.54:1 |
Values
| HEX | #3D4884 |
| RGB | rgb(61, 72, 132) |
| HSL | hsl(231, 37%, 38%) |
| OKLCH | oklch(42.3% 0.1 273.5) |
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 #3D4884 | 8.54:1 | AAA | Lc -93.8 | Preferred for body text |
| Black text on #3D4884 | 2.45:1 | Fails | Lc 14.8 | Not readable |
| #3D4884 text on white | 8.54:1 | AAA | Lc 89.2 | Fine for body text |
| #3D4884 text on black | 2.45:1 | Fails | Lc -13.0 | 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 800.
-
Step 50
50
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E6E9F6
oklch(93.6% 0.018 275.6)
-
Step 200
200
#D2D8EF
oklch(88.5% 0.032 274.1)
-
Step 300
300
#B4BFE7
oklch(81% 0.058 273)
-
Step 400
400
#8E9DDB
oklch(70.8% 0.093 273.4)
-
Step 500
500
#7383D2
oklch(63.1% 0.12 273.8)
-
Step 600
600
#5C6BBF
oklch(55.6% 0.131 273.8)
-
Step 700
700
#4C59A4
oklch(49.1% 0.12 273.7)
-
Step 800
800 (this color)
#3D4884
oklch(42.3% 0.1 273.5)
-
Step 900
900
#353E6B
oklch(37.8% 0.078 273.6)
-
Step 950
950
#1F243F
oklch(27% 0.051 274.5)
#3D4884 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) | #2F4F86 | 0.024 |
| Deuteranopia (no green cones) | #274A83 | 0.027 |
| Tritanopia (no blue cones) | #1D555F | 0.090 |
| Achromatopsia (no color) | #4C4C4C | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D4884
#3D4884
oklch(42.3% 0.1 273.5)
- #5E4C00
#5E4C00
oklch(42.3% 0.087 93.2)
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 #3D4884, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.036
- Dusk Blue #26538D ΔE 0.038
- Cobalt #1E488F ΔE 0.038
- Twilight #4E518B ΔE 0.039
- Blueberry #464196 ΔE 0.039
- Light Navy #155084 ΔE 0.042
- Dusk #4E5481 ΔE 0.046
- Light Navy Blue #2E5A88 ΔE 0.052
Use #3D4884 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.