#3A438E
Closest named color: Blueberry (#464196). oklch(41.7% 0.123 274.6), rgb(58, 67, 142).
Aa
White text reads best on this color (8.84:1).
About this color
#3A438E is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.123 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 8.84:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.123) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.37:1 |
| White text | 8.84:1 |
Values
| HEX | #3A438E |
| RGB | rgb(58, 67, 142) |
| HSL | hsl(234, 42%, 39%) |
| OKLCH | oklch(41.7% 0.123 274.6) |
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 #3A438E | 8.84:1 | AAA | Lc -94.5 | Preferred for body text |
| Black text on #3A438E | 2.37:1 | Fails | Lc 14.0 | Not readable |
| #3A438E text on white | 8.84:1 | AAA | Lc 90.0 | Fine for body text |
| #3A438E text on black | 2.37:1 | Fails | Lc -12.3 | 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
#8B9AE8
oklch(70.6% 0.115 274.8)
-
Step 500
500
#707FE1
oklch(63% 0.147 274.8)
-
Step 600
600
#5A67CF
oklch(55.7% 0.159 274.7)
-
Step 700
700
#4A55B3
oklch(49.2% 0.148 274.6)
-
Step 800
800 (this color)
#3A438E
oklch(41.7% 0.123 274.6)
-
Step 900
900
#333B74
oklch(37.6% 0.097 274.7)
-
Step 950
950
#1E2344
oklch(27% 0.061 275)
#3A438E 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) | #1A4E91 | 0.040 |
| Deuteranopia (no green cones) | #07478C | 0.045 |
| Tritanopia (no blue cones) | #025462 | 0.108 |
| Achromatopsia (no color) | #4A4A4A | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A438E
#3A438E
oklch(41.7% 0.123 274.6)
- #5B4B00
#5B4B00
oklch(41.7% 0.086 94.9)
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 #3A438E, 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 0.025
- Cobalt #1E488F ΔE 0.032
- Dusk Blue #26538D ΔE 0.047
- Light Navy #155084 ΔE 0.053
- Twilight #4E518B ΔE 0.053
- Twilight Blue #0A437A ΔE 0.059
- Sapphire #2138AB ΔE 0.065
Use #3A438E 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.