#3D4E6F
Closest named color: YInMn Blue (#415A77). oklch(42.4% 0.059 263.1), rgb(61, 78, 111).
Aa
White text reads best on this color (8.34:1).
About this color
#3D4E6F is a dark, muted blue. In OKLCH its lightness is 42%, its chroma 0.059 and its hue 263°. 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 8.34:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.51:1 |
| White text | 8.34:1 |
Values
| HEX | #3D4E6F |
| RGB | rgb(61, 78, 111) |
| HSL | hsl(220, 29%, 34%) |
| OKLCH | oklch(42.4% 0.059 263.1) |
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 #3D4E6F | 8.34:1 | AAA | Lc -93.3 | Preferred for body text |
| Black text on #3D4E6F | 2.51:1 | Fails | Lc 15.3 | Dividers and decoration only |
| #3D4E6F text on white | 8.34:1 | AAA | Lc 88.7 | Fine for body text |
| #3D4E6F text on black | 2.51:1 | 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
#D2D9E6
oklch(88.4% 0.019 263)
-
Step 300
300
#B5C1D8
oklch(80.9% 0.035 263.5)
-
Step 400
400
#8FA1C4
oklch(70.7% 0.055 263.6)
-
Step 500
500
#738AB5
oklch(63.2% 0.07 262.7)
-
Step 600
600
#5B73A1
oklch(55.6% 0.077 262.9)
-
Step 700
700
#4B608A
oklch(49% 0.073 263.6)
-
Step 800
800 (this color)
#3D4E6F
oklch(42.4% 0.059 263.1)
-
Step 900
900
#35425A
oklch(37.8% 0.045 262.4)
-
Step 950
950
#1F2635
oklch(26.9% 0.03 265.1)
#3D4E6F 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) | #425070 | 0.010 |
| Deuteranopia (no green cones) | #3D4C6E | 0.006 |
| Tritanopia (no blue cones) | #2B555A | 0.053 |
| Achromatopsia (no color) | #4E4E4E | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D4E6F
#3D4E6F
oklch(42.4% 0.059 263.1)
- #5E4B26
#5E4B26
oklch(42.4% 0.059 82.6)
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 #3D4E6F, 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 0.042
- Dusty Grape #545775 ΔE 0.046
- Light Navy Blue #2E5A88 ΔE 0.048
- Light Navy #155084 ΔE 0.049
- Dark Grey Blue #29465B ΔE 0.049
- Deep Sea Blue #015482 ΔE 0.051
- Dusk Blue #26538D ΔE 0.052
Use #3D4E6F 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.