#3A4871
Closest named color: Dark Grey Blue (#29465B). oklch(40.9% 0.071 268.8), rgb(58, 72, 113).
Aa
White text reads best on this color (8.95:1).
About this color
#3A4871 is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.071 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.045 away. White text reads best on it, at 8.95:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.34:1 |
| White text | 8.95:1 |
Values
| HEX | #3A4871 |
| RGB | rgb(58, 72, 113) |
| HSL | hsl(225, 32%, 34%) |
| OKLCH | oklch(40.9% 0.071 268.8) |
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 #3A4871 | 8.95:1 | AAA | Lc -94.9 | Preferred for body text |
| Black text on #3A4871 | 2.34:1 | Fails | Lc 13.5 | Not readable |
| #3A4871 text on white | 8.95:1 | AAA | Lc 90.5 | Preferred for body text |
| #3A4871 text on black | 2.34:1 | Fails | Lc -11.8 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E6EAF2
oklch(93.6% 0.012 264.5)
-
Step 200
200
#D3D9E9
oklch(88.6% 0.023 269.4)
-
Step 300
300
#B5C0DC
oklch(80.8% 0.041 268.5)
-
Step 400
400
#8F9FCB
oklch(70.6% 0.067 269.1)
-
Step 500
500
#7487BE
oklch(63% 0.086 269.2)
-
Step 600
600
#5D71AA
oklch(55.7% 0.092 268.6)
-
Step 700
700
#4C5E92
oklch(49.1% 0.087 268.6)
-
Step 800
800 (this color)
#3A4871
oklch(40.9% 0.071 268.8)
-
Step 900
900
#35405F
oklch(37.6% 0.055 268.7)
-
Step 950
950
#1F2638
oklch(27.1% 0.035 267.7)
#3A4871 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) | #394C73 | 0.012 |
| Deuteranopia (no green cones) | #334770 | 0.010 |
| Tritanopia (no blue cones) | #255157 | 0.065 |
| Achromatopsia (no color) | #494949 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A4871
#3A4871
oklch(40.9% 0.071 268.8)
- #5A4815
#5A4815
oklch(41% 0.072 89)
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 #3A4871, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.045
- Light Navy #155084 ΔE 0.046
- Dusk Blue #26538D ΔE 0.053
- Twilight Blue #0A437A ΔE 0.053
- Dusk #4E5481 ΔE 0.053
- Deep Sea Blue #015482 ΔE 0.053
- YInMn Blue #415A77 ΔE 0.056
- Cobalt #1E488F ΔE 0.057
Use #3A4871 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.