#3D4C8A
Closest named color: Dusk Blue (#26538D). oklch(43.6% 0.104 271.3), rgb(61, 76, 138).
Aa
White text reads best on this color (8.07:1).
About this color
#3D4C8A is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.104 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.029 away. White text reads best on it, at 8.07:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.59:1 |
| White text | 8.07:1 |
Values
| HEX | #3D4C8A |
| RGB | rgb(61, 76, 138) |
| HSL | hsl(228, 39%, 39%) |
| OKLCH | oklch(43.6% 0.104 271.3) |
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 #3D4C8A | 8.07:1 | AAA | Lc -92.5 | Preferred for body text |
| Black text on #3D4C8A | 2.59:1 | Fails | Lc 16.2 | Dividers and decoration only |
| #3D4C8A text on white | 8.07:1 | AAA | Lc 87.8 | Fine for body text |
| #3D4C8A text on black | 2.59:1 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5E9F6
oklch(93.5% 0.018 272.3)
-
Step 200
200
#D1D8F0
oklch(88.4% 0.034 272.8)
-
Step 300
300
#B2BFE9
oklch(80.9% 0.061 271.5)
-
Step 400
400
#8A9DDE
oklch(70.7% 0.098 271.2)
-
Step 500
500
#6E84D4
oklch(63.1% 0.123 270.9)
-
Step 600
600
#576CC1
oklch(55.6% 0.134 271)
-
Step 700
700
#485AA7
oklch(49.2% 0.125 271.3)
-
Step 800
800 (this color)
#3D4C8A
oklch(43.6% 0.104 271.3)
-
Step 900
900
#323E6C
oklch(37.7% 0.08 271.1)
-
Step 950
950
#1D253F
oklch(27.1% 0.05 269.9)
#3D4C8A 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) | #31538C | 0.022 |
| Deuteranopia (no green cones) | #284D89 | 0.024 |
| Tritanopia (no blue cones) | #155A64 | 0.093 |
| Achromatopsia (no color) | #505050 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D4C8A
#3D4C8A
oklch(43.6% 0.104 271.3)
- #634F00
#634F00
oklch(43.6% 0.089 92)
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 #3D4C8A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.029
- Twilight #4E518B ΔE 0.030
- Cobalt #1E488F ΔE 0.039
- Blueberry #464196 ΔE 0.039
- Dusk #4E5481 ΔE 0.040
- Light Navy #155084 ΔE 0.041
- Dark Slate Blue #483D8B ΔE 0.042
- Denim Blue #3B5B92 ΔE 0.043
Use #3D4C8A 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.