#3D506D
Closest named color: YInMn Blue (#415A77). oklch(42.8% 0.054 258.7), rgb(61, 80, 109).
Aa
White text reads best on this color (8.18:1).
About this color
#3D506D is a dark, muted blue. In OKLCH its lightness is 43%, its chroma 0.054 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.032 away. White text reads best on it, at 8.18:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.56:1 |
| White text | 8.18:1 |
Values
| HEX | #3D506D |
| RGB | rgb(61, 80, 109) |
| HSL | hsl(216, 28%, 33%) |
| OKLCH | oklch(42.8% 0.054 258.7) |
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 #3D506D | 8.18:1 | AAA | Lc -92.9 | Preferred for body text |
| Black text on #3D506D | 2.56:1 | Fails | Lc 15.7 | Dividers and decoration only |
| #3D506D text on white | 8.18:1 | AAA | Lc 88.3 | Fine for body text |
| #3D506D text on black | 2.56:1 | Fails | Lc -13.9 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E6EAF0
oklch(93.6% 0.009 258.3)
-
Step 200
200
#D2DAE5
oklch(88.6% 0.017 256.3)
-
Step 300
300
#B5C2D5
oklch(81% 0.03 257.8)
-
Step 400
400
#8EA2C1
oklch(70.8% 0.051 259.1)
-
Step 500
500
#728BB1
oklch(63.2% 0.064 258.6)
-
Step 600
600
#5A749D
oklch(55.5% 0.071 259.3)
-
Step 700
700
#4A6286
oklch(49.2% 0.065 258.3)
-
Step 800
800 (this color)
#3D506D
oklch(42.8% 0.054 258.7)
-
Step 900
900
#344258
oklch(37.6% 0.042 259.3)
-
Step 950
950
#1E2734
oklch(27% 0.028 257.5)
#3D506D 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) | #45526E | 0.013 |
| Deuteranopia (no green cones) | #404D6C | 0.009 |
| Tritanopia (no blue cones) | #2C565A | 0.047 |
| Achromatopsia (no color) | #4F4F4F | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D506D
#3D506D
oklch(42.8% 0.054 258.7)
- #5F4C2C
#5F4C2C
oklch(42.8% 0.054 79.6)
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 #3D506D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.032
- Dusty Grape #545775 ΔE 0.043
- Dusk #4E5481 ΔE 0.043
- Light Navy Blue #2E5A88 ΔE 0.048
- Dark Grey Blue #29465B ΔE 0.050
- Light Navy #155084 ΔE 0.052
- Deep Sea Blue #015482 ΔE 0.052
- Dusk Blue #26538D ΔE 0.056
Use #3D506D 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.