#3A487D
Closest named color: Light Navy (#155084). oklch(41.6% 0.09 270.9), rgb(58, 72, 125).
Aa
White text reads best on this color (8.73:1).
About this color
#3A487D is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.090 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 8.73:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.40:1 |
| White text | 8.73:1 |
Values
| HEX | #3A487D |
| RGB | rgb(58, 72, 125) |
| HSL | hsl(227, 37%, 36%) |
| OKLCH | oklch(41.6% 0.09 270.9) |
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 #3A487D | 8.73:1 | AAA | Lc -94.3 | Preferred for body text |
| Black text on #3A487D | 2.40:1 | Fails | Lc 14.2 | Not readable |
| #3A487D text on white | 8.73:1 | AAA | Lc 89.8 | Fine for body text |
| #3A487D text on black | 2.40:1 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
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
#B4BFE4
oklch(80.8% 0.054 272.1)
-
Step 400
400
#8D9ED6
oklch(70.7% 0.085 271.1)
-
Step 500
500
#7185CB
oklch(63.1% 0.108 270.9)
-
Step 600
600
#5A6EB8
oklch(55.7% 0.117 270.8)
-
Step 700
700
#4A5B9E
oklch(49% 0.109 271.2)
-
Step 800
800 (this color)
#3A487D
oklch(41.6% 0.09 270.9)
-
Step 900
900
#343F67
oklch(37.8% 0.07 271.1)
-
Step 950
950
#1E253C
oklch(27% 0.044 270.3)
#3A487D 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) | #334E7F | 0.018 |
| Deuteranopia (no green cones) | #2B487C | 0.019 |
| Tritanopia (no blue cones) | #1C535C | 0.080 |
| Achromatopsia (no color) | #4B4B4B | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A487D
#3A487D
oklch(41.6% 0.09 270.9)
- #5D4A00
#5D4A00
oklch(41.7% 0.085 91.9)
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 #3A487D, 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 0.040
- Cobalt #1E488F ΔE 0.042
- Dark Slate Blue #483D8B ΔE 0.045
- Twilight #4E518B ΔE 0.046
- Dusk #4E5481 ΔE 0.048
- Deep Sea Blue #015482 ΔE 0.050
- Twilight Blue #0A437A ΔE 0.051
Use #3A487D 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.