#3A428E
Closest named color: Blueberry (#464196). oklch(41.5% 0.125 275.1), rgb(58, 66, 142).
Aa
White text reads best on this color (8.93:1).
About this color
#3A428E is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.125 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.023 away. White text reads best on it, at 8.93:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.125) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.34:1 |
| White text | 8.93:1 |
Values
| HEX | #3A428E |
| RGB | rgb(58, 66, 142) |
| HSL | hsl(234, 42%, 39%) |
| OKLCH | oklch(41.5% 0.125 275.1) |
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 #3A428E | 8.93:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #3A428E | 2.34:1 | Fails | Lc 13.7 | Not readable |
| #3A428E text on white | 8.93:1 | AAA | Lc 90.2 | Preferred for body text |
| #3A428E text on black | 2.34:1 | Fails | Lc -12.0 | 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
#E5E9F8
oklch(93.5% 0.021 274)
-
Step 200
200
#D1D8F5
oklch(88.6% 0.041 274.8)
-
Step 300
300
#B2BEF0
oklch(81% 0.072 274.2)
-
Step 400
400
#8C9AE9
oklch(70.7% 0.117 275.4)
-
Step 500
500
#717FE2
oklch(63.1% 0.149 275.2)
-
Step 600
600
#5A66D0
oklch(55.6% 0.162 275)
-
Step 700
700
#4A54B4
oklch(49% 0.151 274.9)
-
Step 800
800 (this color)
#3A428E
oklch(41.5% 0.125 275.1)
-
Step 900
900
#343B74
oklch(37.7% 0.097 275.5)
-
Step 950
950
#1E2344
oklch(27% 0.061 275)
#3A428E 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) | #174D91 | 0.042 |
| Deuteranopia (no green cones) | #03468C | 0.047 |
| Tritanopia (no blue cones) | #025361 | 0.110 |
| Achromatopsia (no color) | #494949 | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A428E
#3A428E
oklch(41.5% 0.125 275.1)
- #5A4B00
#5A4B00
oklch(41.6% 0.086 95.8)
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 #3A428E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.023
- Dark Slate Blue #483D8B ΔE 0.024
- Cobalt #1E488F ΔE 0.032
- Dusk Blue #26538D ΔE 0.050
- Light Navy #155084 ΔE 0.054
- Twilight #4E518B ΔE 0.055
- Twilight Blue #0A437A ΔE 0.059
- Sapphire #2138AB ΔE 0.063
Use #3A428E 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.