#3D4D7E
Closest named color: Dusk (#4E5481). oklch(43% 0.084 269), rgb(61, 77, 126).
Aa
White text reads best on this color (8.19:1).
About this color
#3D4D7E is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.084 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.034 away. White text reads best on it, at 8.19:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.56:1 |
| White text | 8.19:1 |
Values
| HEX | #3D4D7E |
| RGB | rgb(61, 77, 126) |
| HSL | hsl(225, 35%, 37%) |
| OKLCH | oklch(43% 0.084 269) |
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 #3D4D7E | 8.19:1 | AAA | Lc -92.9 | Preferred for body text |
| Black text on #3D4D7E | 2.56:1 | Fails | Lc 15.7 | Dividers and decoration only |
| #3D4D7E text on white | 8.19:1 | AAA | Lc 88.2 | Fine for body text |
| #3D4D7E text on black | 2.56:1 | Fails | Lc -13.9 | 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
#E6EAF4
oklch(93.7% 0.014 268.5)
-
Step 200
200
#D2D9EC
oklch(88.6% 0.027 269.6)
-
Step 300
300
#B3C0E1
oklch(80.9% 0.049 268.3)
-
Step 400
400
#8C9FD2
oklch(70.7% 0.078 268.6)
-
Step 500
500
#7186C7
oklch(63.1% 0.101 269.7)
-
Step 600
600
#596FB3
oklch(55.5% 0.109 269.1)
-
Step 700
700
#495D9A
oklch(49.1% 0.101 268.8)
-
Step 800
800 (this color)
#3D4D7E
oklch(43% 0.084 269)
-
Step 900
900
#334064
oklch(37.7% 0.064 268.1)
-
Step 950
950
#1E253B
oklch(26.9% 0.042 269.9)
#3D4D7E 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) | #3A5280 | 0.014 |
| Deuteranopia (no green cones) | #334C7D | 0.014 |
| Tritanopia (no blue cones) | #21575F | 0.075 |
| Achromatopsia (no color) | #4F4F4F | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D4D7E
#3D4D7E
oklch(43% 0.084 269)
- #624D09
#624D09
oklch(43% 0.084 89.5)
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 #3D4D7E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.034
- Dusk Blue #26538D ΔE 0.034
- Twilight #4E518B ΔE 0.035
- Light Navy #155084 ΔE 0.038
- Light Navy Blue #2E5A88 ΔE 0.039
- YInMn Blue #415A77 ΔE 0.045
- Deep Sea Blue #015482 ΔE 0.046
- Denim Blue #3B5B92 ΔE 0.047
Use #3D4D7E 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.