#3D478D
Closest named color: Blueberry (#464196). oklch(42.7% 0.115 274.4), rgb(61, 71, 141).
Aa
White text reads best on this color (8.45:1).
About this color
#3D478D is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.115 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.025 away. White text reads best on it, at 8.45:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.115) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.48:1 |
| White text | 8.45:1 |
Values
| HEX | #3D478D |
| RGB | rgb(61, 71, 141) |
| HSL | hsl(233, 40%, 40%) |
| OKLCH | oklch(42.7% 0.115 274.4) |
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 #3D478D | 8.45:1 | AAA | Lc -93.5 | Preferred for body text |
| Black text on #3D478D | 2.48:1 | Fails | Lc 15.1 | Dividers and decoration only |
| #3D478D text on white | 8.45:1 | AAA | Lc 88.9 | Fine for body text |
| #3D478D text on black | 2.48:1 | Fails | Lc -13.3 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E6E9F7
oklch(93.6% 0.019 276.3)
-
Step 200
200
#D1D8F3
oklch(88.5% 0.038 274.1)
-
Step 300
300
#B3BEED
oklch(80.9% 0.068 274.5)
-
Step 400
400
#8C9BE4
oklch(70.7% 0.108 274.4)
-
Step 500
500
#7181DC
oklch(63.2% 0.138 274.3)
-
Step 600
600
#5A68C9
oklch(55.5% 0.15 274.3)
-
Step 700
700
#4A56AE
oklch(49% 0.139 274.2)
-
Step 800
800 (this color)
#3D478D
oklch(42.7% 0.115 274.4)
-
Step 900
900
#343C71
oklch(37.7% 0.091 274.8)
-
Step 950
950
#1E2442
oklch(27.1% 0.056 273.5)
#3D478D 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) | #255190 | 0.035 |
| Deuteranopia (no green cones) | #1B4A8C | 0.036 |
| Tritanopia (no blue cones) | #125763 | 0.103 |
| Achromatopsia (no color) | #4D4D4D | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D478D
#3D478D
oklch(42.7% 0.115 274.4)
- #5F4D00
#5F4D00
oklch(42.6% 0.087 93.4)
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 #3D478D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.025
- Dark Slate Blue #483D8B ΔE 0.029
- Cobalt #1E488F ΔE 0.034
- Dusk Blue #26538D ΔE 0.039
- Twilight #4E518B ΔE 0.041
- Light Navy #155084 ΔE 0.048
- Dusk #4E5481 ΔE 0.054
- Denim Blue #3B5B92 ΔE 0.056
Use #3D478D 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.