#3D4B7B
Closest named color: Dusk (#4E5481). oklch(42.4% 0.082 270.3), rgb(61, 75, 123).
Aa
White text reads best on this color (8.43:1).
About this color
#3D4B7B is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.082 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.039 away. White text reads best on it, at 8.43:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.49:1 |
| White text | 8.43:1 |
Values
| HEX | #3D4B7B |
| RGB | rgb(61, 75, 123) |
| HSL | hsl(226, 34%, 36%) |
| OKLCH | oklch(42.4% 0.082 270.3) |
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 #3D4B7B | 8.43:1 | AAA | Lc -93.5 | Preferred for body text |
| Black text on #3D4B7B | 2.49:1 | Fails | Lc 15.0 | Dividers and decoration only |
| #3D4B7B text on white | 8.43:1 | AAA | Lc 89.0 | Fine for body text |
| #3D4B7B text on black | 2.49:1 | Fails | Lc -13.3 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E6EAF3
oklch(93.7% 0.013 266.7)
-
Step 200
200
#D2D9EB
oklch(88.5% 0.026 268.8)
-
Step 300
300
#B4C0E0
oklch(80.9% 0.047 269.1)
-
Step 400
400
#8E9FD1
oklch(70.8% 0.076 269.9)
-
Step 500
500
#7386C5
oklch(63.1% 0.098 270.6)
-
Step 600
600
#5B6FB2
oklch(55.6% 0.107 270.1)
-
Step 700
700
#4B5D99
oklch(49.2% 0.099 269.9)
-
Step 800
800 (this color)
#3D4B7B
oklch(42.4% 0.082 270.3)
-
Step 900
900
#353F64
oklch(37.6% 0.065 271.5)
-
Step 950
950
#1F253A
oklch(26.9% 0.04 271.3)
#3D4B7B 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) | #39507D | 0.015 |
| Deuteranopia (no green cones) | #334B7A | 0.013 |
| Tritanopia (no blue cones) | #24555D | 0.073 |
| Achromatopsia (no color) | #4D4D4D | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D4B7B
#3D4B7B
oklch(42.4% 0.082 270.3)
- #5F4C0A
#5F4C0A
oklch(42.4% 0.082 91.1)
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 #3D4B7B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.039
- Dusk Blue #26538D ΔE 0.039
- Light Navy #155084 ΔE 0.040
- Twilight #4E518B ΔE 0.040
- Light Navy Blue #2E5A88 ΔE 0.045
- Deep Sea Blue #015482 ΔE 0.048
- YInMn Blue #415A77 ΔE 0.049
- Cobalt #1E488F ΔE 0.049
Use #3D4B7B 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.