#3A448F
Closest named color: Blueberry (#464196). oklch(42% 0.123 274.1), rgb(58, 68, 143).
Aa
White text reads best on this color (8.73:1).
About this color
#3A448F is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.123 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.022 away. White text reads best on it, at 8.73:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.123) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.40:1 |
| White text | 8.73:1 |
Values
| HEX | #3A448F |
| RGB | rgb(58, 68, 143) |
| HSL | hsl(233, 42%, 39%) |
| OKLCH | oklch(42% 0.123 274.1) |
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 #3A448F | 8.73:1 | AAA | Lc -94.2 | Preferred for body text |
| Black text on #3A448F | 2.40:1 | Fails | Lc 14.3 | Not readable |
| #3A448F text on white | 8.73:1 | AAA | Lc 89.7 | Fine for body text |
| #3A448F text on black | 2.40:1 | Fails | Lc -12.6 | 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
#D1D8F4
oklch(88.6% 0.039 274.4)
-
Step 300
300
#B2BEF0
oklch(81% 0.072 274.2)
-
Step 400
400
#8A9BE8
oklch(70.7% 0.114 273.6)
-
Step 500
500
#6F80E1
oklch(63.1% 0.146 274)
-
Step 600
600
#5967CF
oklch(55.6% 0.16 274.3)
-
Step 700
700
#4955B3
oklch(49.1% 0.148 274.1)
-
Step 800
800 (this color)
#3A448F
oklch(42% 0.123 274.1)
-
Step 900
900
#333C74
oklch(37.8% 0.096 274.1)
-
Step 950
950
#1E2344
oklch(27% 0.061 275)
#3A448F 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) | #1B4F92 | 0.039 |
| Deuteranopia (no green cones) | #09478D | 0.043 |
| Tritanopia (no blue cones) | #005563 | 0.108 |
| Achromatopsia (no color) | #4B4B4B | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A448F
#3A448F
oklch(42% 0.123 274.1)
- #5C4C00
#5C4C00
oklch(42% 0.086 95.1)
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 #3A448F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.022
- Dark Slate Blue #483D8B ΔE 0.026
- Cobalt #1E488F ΔE 0.031
- Dusk Blue #26538D ΔE 0.045
- Twilight #4E518B ΔE 0.051
- Light Navy #155084 ΔE 0.051
- Twilight Blue #0A437A ΔE 0.060
- Dusk #4E5481 ΔE 0.064
Use #3A448F 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.