#3A4397
Closest named color: Blueberry (#464196). oklch(42.4% 0.136 274.4), rgb(58, 67, 151).
Aa
White text reads best on this color (8.64:1).
About this color
#3A4397 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.136 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.018 away. White text reads best on it, at 8.64:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.136) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.42:1 |
| White text | 8.64:1 |
Values
| HEX | #3A4397 |
| RGB | rgb(58, 67, 151) |
| HSL | hsl(234, 44%, 41%) |
| OKLCH | oklch(42.4% 0.136 274.4) |
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 #3A4397 | 8.64:1 | AAA | Lc -93.9 | Preferred for body text |
| Black text on #3A4397 | 2.42:1 | Fails | Lc 14.6 | Not readable |
| #3A4397 text on white | 8.64:1 | AAA | Lc 89.4 | Fine for body text |
| #3A4397 text on black | 2.42:1 | Fails | Lc -12.9 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9FA
oklch(93.6% 0.023 275.4)
-
Step 200
200
#D0D8F7
oklch(88.6% 0.044 274)
-
Step 300
300
#B1BDF5
oklch(80.9% 0.08 275.1)
-
Step 400
400
#8999F0
oklch(70.7% 0.128 274.7)
-
Step 500
500
#6D7EEA
oklch(63.1% 0.162 274.1)
-
Step 600
600
#5764D9
oklch(55.6% 0.178 274.3)
-
Step 700
700
#4852BC
oklch(49.1% 0.165 274.5)
-
Step 800
800 (this color)
#3A4397
oklch(42.4% 0.136 274.4)
-
Step 900
900
#323A79
oklch(37.7% 0.106 274.7)
-
Step 950
950
#1D2347
oklch(27.1% 0.067 274)
#3A4397 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) | #07509A | 0.048 |
| Deuteranopia (no green cones) | #004895 | 0.046 |
| Tritanopia (no blue cones) | #005766 | 0.118 |
| Achromatopsia (no color) | #4C4C4C | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A4397
#3A4397
oklch(42.4% 0.136 274.4)
- #5E4D00
#5E4D00
oklch(42.5% 0.087 94.3)
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 #3A4397, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.018
- Dark Slate Blue #483D8B ΔE 0.030
- Cobalt #1E488F ΔE 0.035
- Dusk Blue #26538D ΔE 0.051
- Sapphire #2138AB ΔE 0.054
- Twilight #4E518B ΔE 0.057
- Light Navy #155084 ΔE 0.060
- Twilight Blue #0A437A ΔE 0.069
Use #3A4397 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.