#3D4E70
Closest named color: YInMn Blue (#415A77). oklch(42.5% 0.061 263.6), rgb(61, 78, 112).
Aa
White text reads best on this color (8.32:1).
About this color
#3D4E70 is a dark, muted blue. In OKLCH its lightness is 42%, its chroma 0.061 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.037 away. White text reads best on it, at 8.32:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.52:1 |
| White text | 8.32:1 |
Values
| HEX | #3D4E70 |
| RGB | rgb(61, 78, 112) |
| HSL | hsl(220, 29%, 34%) |
| OKLCH | oklch(42.5% 0.061 263.6) |
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 #3D4E70 | 8.32:1 | AAA | Lc -93.3 | Preferred for body text |
| Black text on #3D4E70 | 2.52:1 | Fails | Lc 15.3 | Dividers and decoration only |
| #3D4E70 text on white | 8.32:1 | AAA | Lc 88.7 | Fine for body text |
| #3D4E70 text on black | 2.52:1 | Fails | Lc -13.5 | 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
#E6EAF1
oklch(93.6% 0.01 261.8)
-
Step 200
200
#D2D9E7
oklch(88.4% 0.021 264.5)
-
Step 300
300
#B5C1D8
oklch(80.9% 0.035 263.5)
-
Step 400
400
#8EA1C5
oklch(70.7% 0.057 263.1)
-
Step 500
500
#7389B6
oklch(63% 0.073 264.2)
-
Step 600
600
#5B73A2
oklch(55.6% 0.079 263.3)
-
Step 700
700
#4B608B
oklch(49.1% 0.074 263.9)
-
Step 800
800 (this color)
#3D4E70
oklch(42.5% 0.061 263.6)
-
Step 900
900
#34415B
oklch(37.6% 0.048 263.7)
-
Step 950
950
#1F2635
oklch(26.9% 0.03 265.1)
#3D4E70 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) | #425171 | 0.012 |
| Deuteranopia (no green cones) | #3C4C6F | 0.006 |
| Tritanopia (no blue cones) | #2B555A | 0.054 |
| Achromatopsia (no color) | #4E4E4E | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D4E70
#3D4E70
oklch(42.5% 0.061 263.6)
- #5E4B25
#5E4B25
oklch(42.4% 0.06 83.2)
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 #3D4E70, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.037
- Dusk #4E5481 ΔE 0.041
- Dusty Grape #545775 ΔE 0.046
- Light Navy Blue #2E5A88 ΔE 0.047
- Light Navy #155084 ΔE 0.048
- Dark Grey Blue #29465B ΔE 0.050
- Deep Sea Blue #015482 ΔE 0.050
- Dusk Blue #26538D ΔE 0.051
Use #3D4E70 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.