#3D5665
Closest named color: YInMn Blue (#415A77). oklch(43.9% 0.039 235.2), rgb(61, 86, 101).
Aa
White text reads best on this color (7.72:1).
About this color
#3D5665 is a dark, muted blue. In OKLCH its lightness is 44%, its chroma 0.039 and its hue 235°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.031 away. White text reads best on it, at 7.72:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | muted (0.039) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.71:1 |
| White text | 7.72:1 |
Values
| HEX | #3D5665 |
| RGB | rgb(61, 86, 101) |
| HSL | hsl(203, 25%, 32%) |
| OKLCH | oklch(43.9% 0.039 235.2) |
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 #3D5665 | 7.72:1 | AAA | Lc -91.6 | Preferred for body text |
| Black text on #3D5665 | 2.71:1 | Fails | Lc 17.2 | Dividers and decoration only |
| #3D5665 text on white | 7.72:1 | AAA | Lc 86.8 | Fine for body text |
| #3D5665 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E6EBEE
oklch(93.7% 0.007 233.6)
-
Step 200
200
#D2DBE0
oklch(88.6% 0.012 231.7)
-
Step 300
300
#B3C3CD
oklch(80.8% 0.023 235.1)
-
Step 400
400
#8BA5B4
oklch(70.7% 0.036 233.3)
-
Step 500
500
#6E8EA2
oklch(63% 0.047 235.9)
-
Step 600
600
#56788D
oklch(55.5% 0.051 236)
-
Step 700
700
#466578
oklch(49% 0.047 235.9)
-
Step 800
800 (this color)
#3D5665
oklch(43.9% 0.039 235.2)
-
Step 900
900
#324450
oklch(37.6% 0.031 237.8)
-
Step 950
950
#1D282F
oklch(27% 0.02 236.4)
#3D5665 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) | #4F5566 | 0.025 |
| Deuteranopia (no green cones) | #4A5165 | 0.022 |
| Tritanopia (no blue cones) | #2F5A5B | 0.029 |
| Achromatopsia (no color) | #535353 | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D5665
#3D5665
oklch(43.9% 0.039 235.2)
- #644D3E
#644D3E
oklch(44% 0.039 54.6)
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 #3D5665, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.031
- Dusty Grape #545775 ΔE 0.044
- Dark Slate Gray #2F4F4F ΔE 0.044
- Petrol #005F6A ΔE 0.045
- Deep Teal #00555A ΔE 0.052
- Dusk #4E5481 ΔE 0.056
- Slate #516572 ΔE 0.057
- Light Navy Blue #2E5A88 ΔE 0.057
Use #3D5665 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.