#3A4E75
Closest named color: YInMn Blue (#415A77). oklch(42.5% 0.07 263), rgb(58, 78, 117).
Aa
White text reads best on this color (8.31:1).
About this color
#3A4E75 is a dark, muted blue. In OKLCH its lightness is 43%, its chroma 0.070 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.039 away. White text reads best on it, at 8.31:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | muted (0.070) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.52:1 |
| White text | 8.31:1 |
Values
| HEX | #3A4E75 |
| RGB | rgb(58, 78, 117) |
| HSL | hsl(220, 34%, 34%) |
| OKLCH | oklch(42.5% 0.07 263) |
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 #3A4E75 | 8.31:1 | AAA | Lc -93.2 | Preferred for body text |
| Black text on #3A4E75 | 2.52:1 | Fails | Lc 15.4 | Dividers and decoration only |
| #3A4E75 text on white | 8.31:1 | AAA | Lc 88.6 | Fine for body text |
| #3A4E75 text on black | 2.52:1 | Fails | Lc -13.6 | 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
#F3F5F9
oklch(97% 0.006 264.5)
-
Step 100
100
#E6EAF2
oklch(93.6% 0.012 264.5)
-
Step 200
200
#D1D9E9
oklch(88.4% 0.024 264.4)
-
Step 300
300
#B3C1DC
oklch(80.9% 0.041 263.6)
-
Step 400
400
#8BA1CA
oklch(70.7% 0.065 262.7)
-
Step 500
500
#6F89BD
oklch(63.1% 0.084 263.7)
-
Step 600
600
#5773A9
oklch(55.7% 0.091 262.8)
-
Step 700
700
#476091
oklch(49.1% 0.085 263)
-
Step 800
800 (this color)
#3A4E75
oklch(42.5% 0.07 263)
-
Step 900
900
#32415F
oklch(37.6% 0.055 263.6)
-
Step 950
950
#1D2637
oklch(26.8% 0.034 262.7)
#3A4E75 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) | #3F5177 | 0.012 |
| Deuteranopia (no green cones) | #394C74 | 0.006 |
| Tritanopia (no blue cones) | #21565C | 0.062 |
| Achromatopsia (no color) | #4E4E4E | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A4E75
#3A4E75
oklch(42.5% 0.07 263)
- #614B1C
#614B1C
oklch(42.6% 0.07 83.6)
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 #3A4E75, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.039
- Dusk #4E5481 ΔE 0.040
- Light Navy #155084 ΔE 0.040
- Light Navy Blue #2E5A88 ΔE 0.042
- Dusk Blue #26538D ΔE 0.042
- Deep Sea Blue #015482 ΔE 0.044
- Twilight #4E518B ΔE 0.048
- Dusty Grape #545775 ΔE 0.049
Use #3A4E75 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.