#3D556D
Closest named color: YInMn Blue (#415A77). oklch(44% 0.049 249), rgb(61, 85, 109).
Aa
White text reads best on this color (7.72:1).
About this color
#3D556D is a dark, muted blue. In OKLCH its lightness is 44%, its chroma 0.049 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.021 away. White text reads best on it, at 7.72:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.71:1 |
| White text | 7.72:1 |
Values
| HEX | #3D556D |
| RGB | rgb(61, 85, 109) |
| HSL | hsl(210, 28%, 33%) |
| OKLCH | oklch(44% 0.049 249) |
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 #3D556D | 7.72:1 | AAA | Lc -91.5 | Preferred for body text |
| Black text on #3D556D | 2.71:1 | Fails | Lc 17.2 | Dividers and decoration only |
| #3D556D text on white | 7.72:1 | AAA | Lc 86.8 | Fine for body text |
| #3D556D text on black | 2.71:1 | Fails | Lc -15.3 | Dividers and decoration only |
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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E6EAEF
oklch(93.5% 0.008 253.9)
-
Step 200
200
#D1DAE4
oklch(88.4% 0.017 250.9)
-
Step 300
300
#B3C3D3
oklch(81% 0.029 248.2)
-
Step 400
400
#8BA4BD
oklch(70.8% 0.046 248.5)
-
Step 500
500
#6E8DAC
oklch(63.1% 0.059 248.8)
-
Step 600
600
#567798
oklch(55.7% 0.064 249)
-
Step 700
700
#466481
oklch(49.2% 0.059 248.3)
-
Step 800
800 (this color)
#3D556D
oklch(44% 0.049 249)
-
Step 900
900
#324355
oklch(37.6% 0.038 250.3)
-
Step 950
950
#1D2832
oklch(27.1% 0.024 246.3)
#3D556D 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) | #4C556E | 0.021 |
| Deuteranopia (no green cones) | #46516D | 0.016 |
| Tritanopia (no blue cones) | #2B5B5D | 0.043 |
| Achromatopsia (no color) | #535353 | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D556D
#3D556D
oklch(44% 0.049 249)
- #654E34
#654E34
oklch(44.1% 0.05 69.4)
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 #3D556D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.021
- Dusty Grape #545775 ΔE 0.037
- Dusk #4E5481 ΔE 0.043
- Light Navy Blue #2E5A88 ΔE 0.045
- Petrol #005F6A ΔE 0.051
- Deep Sea Blue #015482 ΔE 0.055
- Dark Slate Gray #2F4F4F ΔE 0.055
- Denim #3B638C ΔE 0.058
Use #3D556D 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.