#3A4FA4
Closest named color: Blueberry (#464196). oklch(45.8% 0.139 269.7), rgb(58, 79, 164).
Aa
White text reads best on this color (7.40:1).
About this color
#3A4FA4 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.139 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.042 away. White text reads best on it, at 7.40:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.83:1 |
| White text | 7.40:1 |
Values
| HEX | #3A4FA4 |
| RGB | rgb(58, 79, 164) |
| HSL | hsl(228, 48%, 44%) |
| OKLCH | oklch(45.8% 0.139 269.7) |
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 #3A4FA4 | 7.40:1 | AAA | Lc -90.3 | Preferred for body text |
| Black text on #3A4FA4 | 2.83:1 | Fails | Lc 18.6 | Dividers and decoration only |
| #3A4FA4 text on white | 7.40:1 | AAA | Lc 85.4 | Fine for body text |
| #3A4FA4 text on black | 2.83:1 | Fails | Lc -16.6 | Dividers and decoration only |
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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAFA
oklch(93.6% 0.023 266.9)
-
Step 200
200
#CDD8F8
oklch(88.4% 0.046 270.4)
-
Step 300
300
#ACBFF6
oklch(81% 0.081 269.7)
-
Step 400
400
#819CF2
oklch(70.8% 0.13 269.7)
-
Step 500
500
#6380ED
oklch(63.1% 0.166 269.9)
-
Step 600
600
#4B67DB
oklch(55.6% 0.18 269.5)
-
Step 700
700
#3D54BE
oklch(49% 0.168 269.9)
-
Step 800
800 (this color)
#3A4FA4
oklch(45.8% 0.139 269.7)
-
Step 900
900
#2B3C7A
oklch(37.7% 0.107 269.2)
-
Step 950
950
#192348
oklch(26.9% 0.07 269.8)
#3A4FA4 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) | #1E5AA7 | 0.035 |
| Deuteranopia (no green cones) | #0051A2 | 0.040 |
| Tritanopia (no blue cones) | #006372 | 0.117 |
| Achromatopsia (no color) | #555555 | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A4FA4
#3A4FA4
oklch(45.8% 0.139 269.7)
- #6C5400
#6C5400
oklch(45.8% 0.094 89.5)
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 #3A4FA4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.042
- Dusk Blue #26538D ΔE 0.046
- Denim Blue #3B5B92 ΔE 0.048
- Twilight #4E518B ΔE 0.050
- Cobalt #1E488F ΔE 0.051
- Dusky Blue #475F94 ΔE 0.059
- Dark Slate Blue #483D8B ΔE 0.059
- Light Navy Blue #2E5A88 ΔE 0.061
Use #3A4FA4 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.