#3D507D
Closest named color: Dusk (#4E5481). oklch(43.7% 0.078 265.9), rgb(61, 80, 125).
Aa
White text reads best on this color (7.94:1).
About this color
#3D507D is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.078 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.029 away. White text reads best on it, at 7.94:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.64:1 |
| White text | 7.94:1 |
Values
| HEX | #3D507D |
| RGB | rgb(61, 80, 125) |
| HSL | hsl(222, 34%, 36%) |
| OKLCH | oklch(43.7% 0.078 265.9) |
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 #3D507D | 7.94:1 | AAA | Lc -92.2 | Preferred for body text |
| Black text on #3D507D | 2.64:1 | Fails | Lc 16.5 | Dividers and decoration only |
| #3D507D text on white | 7.94:1 | AAA | Lc 87.5 | Fine for body text |
| #3D507D text on black | 2.64:1 | Fails | Lc -14.7 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E6EAF3
oklch(93.7% 0.013 266.7)
-
Step 200
200
#D1D9EB
oklch(88.5% 0.026 266.6)
-
Step 300
300
#B3C1DF
oklch(81% 0.045 265.5)
-
Step 400
400
#8BA0CF
oklch(70.7% 0.073 265.9)
-
Step 500
500
#6F88C3
oklch(63.2% 0.094 266.2)
-
Step 600
600
#5771AF
oklch(55.6% 0.102 265.9)
-
Step 700
700
#475E97
oklch(49% 0.096 266.3)
-
Step 800
800 (this color)
#3D507D
oklch(43.7% 0.078 265.9)
-
Step 900
900
#324162
oklch(37.8% 0.06 265)
-
Step 950
950
#1D263A
oklch(27% 0.04 265.3)
#3D507D 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) | #3F547F | 0.012 |
| Deuteranopia (no green cones) | #384E7C | 0.009 |
| Tritanopia (no blue cones) | #225A60 | 0.072 |
| Achromatopsia (no color) | #515151 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D507D
#3D507D
oklch(43.7% 0.078 265.9)
- #654E15
#654E15
oklch(43.7% 0.079 85.8)
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 #3D507D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.029
- Light Navy Blue #2E5A88 ΔE 0.033
- Dusk Blue #26538D ΔE 0.034
- Twilight #4E518B ΔE 0.035
- YInMn Blue #415A77 ΔE 0.035
- Light Navy #155084 ΔE 0.039
- Denim Blue #3B5B92 ΔE 0.042
- Deep Sea Blue #015482 ΔE 0.044
Use #3D507D 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.