#3D4F69
Closest named color: YInMn Blue (#415A77). oklch(42.4% 0.049 257.5), rgb(61, 79, 105).
Aa
White text reads best on this color (8.33:1).
About this color
#3D4F69 is a dark, muted blue. In OKLCH its lightness is 42%, its chroma 0.049 and its hue 258°. 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 8.33:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.52:1 |
| White text | 8.33:1 |
Values
| HEX | #3D4F69 |
| RGB | rgb(61, 79, 105) |
| HSL | hsl(215, 27%, 33%) |
| OKLCH | oklch(42.4% 0.049 257.5) |
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 #3D4F69 | 8.33:1 | AAA | Lc -93.3 | Preferred for body text |
| Black text on #3D4F69 | 2.52:1 | Fails | Lc 15.3 | Dividers and decoration only |
| #3D4F69 text on white | 8.33:1 | AAA | Lc 88.7 | Fine for body text |
| #3D4F69 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E6EAEF
oklch(93.5% 0.008 253.9)
-
Step 200
200
#D3DAE4
oklch(88.6% 0.016 257.2)
-
Step 300
300
#B5C2D4
oklch(81% 0.029 256.5)
-
Step 400
400
#8FA2BE
oklch(70.7% 0.046 258)
-
Step 500
500
#738BAD
oklch(63.1% 0.058 257.1)
-
Step 600
600
#5C7599
oklch(55.7% 0.064 257.5)
-
Step 700
700
#4B6282
oklch(49.1% 0.059 256.7)
-
Step 800
800 (this color)
#3D4F69
oklch(42.4% 0.049 257.5)
-
Step 900
900
#354256
oklch(37.6% 0.038 258.9)
-
Step 950
950
#1F2732
oklch(27% 0.024 256.4)
#3D4F69 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) | #46506A | 0.014 |
| Deuteranopia (no green cones) | #414C68 | 0.010 |
| Tritanopia (no blue cones) | #2E5558 | 0.044 |
| Achromatopsia (no color) | #4E4E4E | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D4F69
#3D4F69
oklch(42.4% 0.049 257.5)
- #5D4B2F
#5D4B2F
oklch(42.4% 0.049 77.9)
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 #3D4F69, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.037
- Dark Grey Blue #29465B ΔE 0.045
- Dusty Grape #545775 ΔE 0.047
- Dusk #4E5481 ΔE 0.049
- Dark Slate Gray #2F4F4F ΔE 0.050
- Light Navy Blue #2E5A88 ΔE 0.054
- Charcoal #264653 ΔE 0.055
- Light Navy #155084 ΔE 0.056
Use #3D4F69 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.