#3A487C
Closest named color: Light Navy (#155084). oklch(41.6% 0.089 270.8), rgb(58, 72, 124).
Aa
White text reads best on this color (8.75:1).
About this color
#3A487C is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.089 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.039 away. White text reads best on it, at 8.75:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.39:1 |
| White text | 8.75:1 |
Values
| HEX | #3A487C |
| RGB | rgb(58, 72, 124) |
| HSL | hsl(227, 36%, 36%) |
| OKLCH | oklch(41.6% 0.089 270.8) |
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 #3A487C | 8.75:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #3A487C | 2.39:1 | Fails | Lc 14.1 | Not readable |
| #3A487C text on white | 8.75:1 | AAA | Lc 89.9 | Fine for body text |
| #3A487C text on black | 2.39:1 | Fails | Lc -12.4 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E6EAF4
oklch(93.7% 0.014 268.5)
-
Step 200
200
#D2D9ED
oklch(88.6% 0.029 270.4)
-
Step 300
300
#B4C0E3
oklch(81% 0.051 270.3)
-
Step 400
400
#8D9ED5
oklch(70.7% 0.083 270.9)
-
Step 500
500
#7185CA
oklch(63% 0.107 270.8)
-
Step 600
600
#5A6EB7
oklch(55.6% 0.116 270.7)
-
Step 700
700
#4A5C9D
oklch(49.1% 0.106 270.4)
-
Step 800
800 (this color)
#3A487C
oklch(41.6% 0.089 270.8)
-
Step 900
900
#343F66
oklch(37.7% 0.069 270.9)
-
Step 950
950
#1E253C
oklch(27% 0.044 270.3)
#3A487C 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) | #334E7E | 0.018 |
| Deuteranopia (no green cones) | #2C487B | 0.018 |
| Tritanopia (no blue cones) | #1D535C | 0.079 |
| Achromatopsia (no color) | #4B4B4B | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A487C
#3A487C
oklch(41.6% 0.089 270.8)
- #5D4900
#5D4900
oklch(41.5% 0.085 90.7)
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 #3A487C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.039
- Dusk Blue #26538D ΔE 0.041
- Cobalt #1E488F ΔE 0.043
- Dark Slate Blue #483D8B ΔE 0.046
- Twilight #4E518B ΔE 0.047
- Dusk #4E5481 ΔE 0.048
- Deep Sea Blue #015482 ΔE 0.050
- Twilight Blue #0A437A ΔE 0.050
Use #3A487C 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.