#3D4871
Closest named color: Dark Grey Blue (#29465B). oklch(41.1% 0.07 271.6), rgb(61, 72, 113).
Aa
White text reads best on this color (8.88:1).
About this color
#3D4871 is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.070 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.048 away. White text reads best on it, at 8.88:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.070) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.36:1 |
| White text | 8.88:1 |
Values
| HEX | #3D4871 |
| RGB | rgb(61, 72, 113) |
| HSL | hsl(227, 30%, 34%) |
| OKLCH | oklch(41.1% 0.07 271.6) |
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 #3D4871 | 8.88:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #3D4871 | 2.36:1 | Fails | Lc 13.7 | Not readable |
| #3D4871 text on white | 8.88:1 | AAA | Lc 90.3 | Preferred for body text |
| #3D4871 text on black | 2.36:1 | Fails | Lc -12.0 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7EAF2
oklch(93.7% 0.011 269.5)
-
Step 200
200
#D3D9E9
oklch(88.6% 0.023 269.4)
-
Step 300
300
#B7C0DC
oklch(81% 0.041 271.4)
-
Step 400
400
#929FCA
oklch(70.8% 0.065 271.6)
-
Step 500
500
#7787BD
oklch(63.2% 0.084 271.2)
-
Step 600
600
#6070A9
oklch(55.7% 0.091 271.3)
-
Step 700
700
#4F5D91
oklch(49% 0.085 271.5)
-
Step 800
800 (this color)
#3D4871
oklch(41.1% 0.07 271.6)
-
Step 900
900
#37405F
oklch(37.8% 0.055 271.2)
-
Step 950
950
#202538
oklch(26.9% 0.036 272.4)
#3D4871 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) | #394C73 | 0.012 |
| Deuteranopia (no green cones) | #354870 | 0.011 |
| Tritanopia (no blue cones) | #2B5057 | 0.062 |
| Achromatopsia (no color) | #4A4A4A | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D4871
#3D4871
oklch(41.1% 0.07 271.6)
- #594917
#594917
oklch(41.1% 0.07 91)
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 #3D4871, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.048
- Light Navy #155084 ΔE 0.048
- Dusk #4E5481 ΔE 0.050
- Dusk Blue #26538D ΔE 0.054
- YInMn Blue #415A77 ΔE 0.055
- Twilight #4E518B ΔE 0.055
- Deep Sea Blue #015482 ΔE 0.056
- Twilight Blue #0A437A ΔE 0.056
Use #3D4871 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.