#3D4E6C
Closest named color: YInMn Blue (#415A77). oklch(42.3% 0.055 261.5), rgb(61, 78, 108).
Aa
White text reads best on this color (8.38:1).
About this color
#3D4E6C is a dark, muted blue. In OKLCH its lightness is 42%, its chroma 0.055 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.038 away. White text reads best on it, at 8.38:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.50:1 |
| White text | 8.38:1 |
Values
| HEX | #3D4E6C |
| RGB | rgb(61, 78, 108) |
| HSL | hsl(218, 28%, 33%) |
| OKLCH | oklch(42.3% 0.055 261.5) |
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 #3D4E6C | 8.38:1 | AAA | Lc -93.4 | Preferred for body text |
| Black text on #3D4E6C | 2.50:1 | Fails | Lc 15.1 | Dividers and decoration only |
| #3D4E6C text on white | 8.38:1 | AAA | Lc 88.9 | Fine for body text |
| #3D4E6C text on black | 2.50:1 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E6EAF0
oklch(93.6% 0.009 258.3)
-
Step 200
200
#D3D9E5
oklch(88.4% 0.018 264.5)
-
Step 300
300
#B5C1D6
oklch(80.8% 0.032 261.7)
-
Step 400
400
#8FA1C1
oklch(70.6% 0.051 261.9)
-
Step 500
500
#738AB2
oklch(63.1% 0.066 261.3)
-
Step 600
600
#5C749D
oklch(55.7% 0.07 260.9)
-
Step 700
700
#4C6187
oklch(49.2% 0.066 261.9)
-
Step 800
800 (this color)
#3D4E6C
oklch(42.3% 0.055 261.5)
-
Step 900
900
#354259
oklch(37.8% 0.043 261.6)
-
Step 950
950
#1F2734
oklch(27.1% 0.027 260)
#3D4E6C 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) | #43506D | 0.011 |
| Deuteranopia (no green cones) | #3E4C6B | 0.006 |
| Tritanopia (no blue cones) | #2D5458 | 0.049 |
| Achromatopsia (no color) | #4E4E4E | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D4E6C
#3D4E6C
oklch(42.3% 0.055 261.5)
- #5D4B29
#5D4B29
oklch(42.3% 0.055 82.2)
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 #3D4E6C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.038
- Dusk #4E5481 ΔE 0.046
- Dark Grey Blue #29465B ΔE 0.046
- Dusty Grape #545775 ΔE 0.047
- Light Navy Blue #2E5A88 ΔE 0.052
- Light Navy #155084 ΔE 0.052
- Deep Sea Blue #015482 ΔE 0.054
- Dark Slate Gray #2F4F4F ΔE 0.056
Use #3D4E6C 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.