#3D4A71
Closest named color: Dusk (#4E5481). oklch(41.6% 0.068 269.3), rgb(61, 74, 113).
Aa
White text reads best on this color (8.69:1).
About this color
#3D4A71 is a dark, muted blue. In OKLCH its lightness is 42%, its chroma 0.068 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.046 away. White text reads best on it, at 8.69:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.41:1 |
| White text | 8.69:1 |
Values
| HEX | #3D4A71 |
| RGB | rgb(61, 74, 113) |
| HSL | hsl(225, 30%, 34%) |
| OKLCH | oklch(41.6% 0.068 269.3) |
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 #3D4A71 | 8.69:1 | AAA | Lc -94.2 | Preferred for body text |
| Black text on #3D4A71 | 2.41:1 | Fails | Lc 14.2 | Not readable |
| #3D4A71 text on white | 8.69:1 | AAA | Lc 89.7 | Fine for body text |
| #3D4A71 text on black | 2.41:1 | Fails | Lc -12.5 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7EAF2
oklch(93.7% 0.011 269.5)
-
Step 200
200
#D3D9E8
oklch(88.5% 0.022 268.4)
-
Step 300
300
#B6C0DB
oklch(80.9% 0.04 269.4)
-
Step 400
400
#909FC9
oklch(70.6% 0.064 269.4)
-
Step 500
500
#7687BB
oklch(63% 0.081 270)
-
Step 600
600
#5E71A7
oklch(55.6% 0.087 268.7)
-
Step 700
700
#4E5E8F
oklch(49% 0.081 269.5)
-
Step 800
800 (this color)
#3D4A71
oklch(41.6% 0.068 269.3)
-
Step 900
900
#36405E
oklch(37.6% 0.053 269.6)
-
Step 950
950
#202637
oklch(27.1% 0.033 269.2)
#3D4A71 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) | #3C4E73 | 0.012 |
| Deuteranopia (no green cones) | #374970 | 0.009 |
| Tritanopia (no blue cones) | #2B5258 | 0.060 |
| Achromatopsia (no color) | #4B4B4B | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D4A71
#3D4A71
oklch(41.6% 0.068 269.3)
- #5B4A1B
#5B4A1B
oklch(41.7% 0.068 89.1)
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 #3D4A71, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.046
- Light Navy #155084 ΔE 0.047
- Dark Grey Blue #29465B ΔE 0.048
- YInMn Blue #415A77 ΔE 0.049
- Dusk Blue #26538D ΔE 0.052
- Deep Sea Blue #015482 ΔE 0.053
- Twilight #4E518B ΔE 0.053
- Light Navy Blue #2E5A88 ΔE 0.054
Use #3D4A71 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.