#3D4E75
Closest named color: Dusk (#4E5481). oklch(42.7% 0.069 265.6), rgb(61, 78, 117).
Aa
White text reads best on this color (8.25:1).
About this color
#3D4E75 is a dark, muted blue. In OKLCH its lightness is 43%, its chroma 0.069 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.036 away. White text reads best on it, at 8.25:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.54:1 |
| White text | 8.25:1 |
Values
| HEX | #3D4E75 |
| RGB | rgb(61, 78, 117) |
| HSL | hsl(222, 31%, 35%) |
| OKLCH | oklch(42.7% 0.069 265.6) |
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 #3D4E75 | 8.25:1 | AAA | Lc -93.1 | Preferred for body text |
| Black text on #3D4E75 | 2.54:1 | Fails | Lc 15.6 | Dividers and decoration only |
| #3D4E75 text on white | 8.25:1 | AAA | Lc 88.4 | Fine for body text |
| #3D4E75 text on black | 2.54:1 | Fails | Lc -13.7 | 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
#E6EAF2
oklch(93.6% 0.012 264.5)
-
Step 200
200
#D2D9E8
oklch(88.4% 0.022 265.8)
-
Step 300
300
#B4C1DB
oklch(80.9% 0.039 264.3)
-
Step 400
400
#8EA0C9
oklch(70.6% 0.064 266.3)
-
Step 500
500
#7289BC
oklch(63.2% 0.082 265.4)
-
Step 600
600
#5A72A8
oklch(55.6% 0.089 265.3)
-
Step 700
700
#4A5F90
oklch(49.1% 0.083 265.8)
-
Step 800
800 (this color)
#3D4E75
oklch(42.7% 0.069 265.6)
-
Step 900
900
#34415E
oklch(37.7% 0.053 265.4)
-
Step 950
950
#1E2637
oklch(26.9% 0.034 264.8)
#3D4E75 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) | #405177 | 0.010 |
| Deuteranopia (no green cones) | #3A4C74 | 0.008 |
| Tritanopia (no blue cones) | #28565C | 0.061 |
| Achromatopsia (no color) | #4F4F4F | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D4E75
#3D4E75
oklch(42.7% 0.069 265.6)
- #604C1E
#604C1E
oklch(42.7% 0.068 85.5)
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 #3D4E75, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.036
- YInMn Blue #415A77 ΔE 0.037
- Light Navy Blue #2E5A88 ΔE 0.042
- Light Navy #155084 ΔE 0.043
- Dusk Blue #26538D ΔE 0.044
- Twilight #4E518B ΔE 0.045
- Dusty Grape #545775 ΔE 0.046
- Deep Sea Blue #015482 ΔE 0.047
Use #3D4E75 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.