#3D4E81
Closest named color: Dusk Blue (#26538D). oklch(43.4% 0.087 268.7), rgb(61, 78, 129).
Aa
White text reads best on this color (8.06:1).
About this color
#3D4E81 is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.087 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.031 away. White text reads best on it, at 8.06:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.60:1 |
| White text | 8.06:1 |
Values
| HEX | #3D4E81 |
| RGB | rgb(61, 78, 129) |
| HSL | hsl(225, 36%, 37%) |
| OKLCH | oklch(43.4% 0.087 268.7) |
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 #3D4E81 | 8.06:1 | AAA | Lc -92.5 | Preferred for body text |
| Black text on #3D4E81 | 2.60:1 | Fails | Lc 16.2 | Dividers and decoration only |
| #3D4E81 text on white | 8.06:1 | AAA | Lc 87.8 | Fine for body text |
| #3D4E81 text on black | 2.60:1 | Fails | Lc -14.3 | 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
#D1D9ED
oklch(88.5% 0.029 268.3)
-
Step 300
300
#B3C0E3
oklch(80.9% 0.052 269.2)
-
Step 400
400
#8B9FD4
oklch(70.7% 0.081 268.3)
-
Step 500
500
#6F86C9
oklch(63% 0.105 268.9)
-
Step 600
600
#586FB6
oklch(55.6% 0.114 268.9)
-
Step 700
700
#485D9C
oklch(49.2% 0.104 268.5)
-
Step 800
800 (this color)
#3D4E81
oklch(43.4% 0.087 268.7)
-
Step 900
900
#324066
oklch(37.8% 0.068 267.7)
-
Step 950
950
#1E253C
oklch(27% 0.044 270.3)
#3D4E81 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) | #3A5383 | 0.014 |
| Deuteranopia (no green cones) | #334D80 | 0.014 |
| Tritanopia (no blue cones) | #1F5961 | 0.078 |
| Achromatopsia (no color) | #505050 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D4E81
#3D4E81
oklch(43.4% 0.087 268.7)
- #654E03
#654E03
oklch(43.6% 0.088 88.7)
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 #3D4E81, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.031
- Twilight #4E518B ΔE 0.031
- Dusk #4E5481 ΔE 0.032
- Light Navy Blue #2E5A88 ΔE 0.036
- Light Navy #155084 ΔE 0.038
- Denim Blue #3B5B92 ΔE 0.042
- YInMn Blue #415A77 ΔE 0.044
- Deep Sea Blue #015482 ΔE 0.046
Use #3D4E81 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.