#3A4E7A
Closest named color: Dusk Blue (#26538D). oklch(42.8% 0.078 264.8), rgb(58, 78, 122).
Aa
White text reads best on this color (8.23:1).
About this color
#3A4E7A is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.078 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.036 away. White text reads best on it, at 8.23:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.55:1 |
| White text | 8.23:1 |
Values
| HEX | #3A4E7A |
| RGB | rgb(58, 78, 122) |
| HSL | hsl(221, 36%, 35%) |
| OKLCH | oklch(42.8% 0.078 264.8) |
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 #3A4E7A | 8.23:1 | AAA | Lc -93.0 | Preferred for body text |
| Black text on #3A4E7A | 2.55:1 | Fails | Lc 15.6 | Dividers and decoration only |
| #3A4E7A text on white | 8.23:1 | AAA | Lc 88.4 | Fine for body text |
| #3A4E7A text on black | 2.55:1 | Fails | Lc -13.8 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF3
oklch(93.6% 0.013 262.4)
-
Step 200
200
#D1D9EA
oklch(88.4% 0.025 265.6)
-
Step 300
300
#B2C1DF
oklch(80.9% 0.046 264.3)
-
Step 400
400
#8AA0CF
oklch(70.6% 0.074 265.1)
-
Step 500
500
#6E88C2
oklch(63% 0.093 265.3)
-
Step 600
600
#5671AE
oklch(55.5% 0.101 265.2)
-
Step 700
700
#465F96
oklch(49.1% 0.094 264.7)
-
Step 800
800 (this color)
#3A4E7A
oklch(42.8% 0.078 264.8)
-
Step 900
900
#324162
oklch(37.8% 0.06 265)
-
Step 950
950
#1D2639
oklch(27% 0.038 264.5)
#3A4E7A 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) | #3D527C | 0.013 |
| Deuteranopia (no green cones) | #364C79 | 0.009 |
| Tritanopia (no blue cones) | #1D575E | 0.069 |
| Achromatopsia (no color) | #4F4F4F | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A4E7A
#3A4E7A
oklch(42.8% 0.078 264.8)
- #634B13
#634B13
oklch(42.8% 0.078 84.3)
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 #3A4E7A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.036
- Light Navy #155084 ΔE 0.036
- Dusk #4E5481 ΔE 0.037
- Light Navy Blue #2E5A88 ΔE 0.038
- YInMn Blue #415A77 ΔE 0.041
- Twilight #4E518B ΔE 0.042
- Deep Sea Blue #015482 ΔE 0.042
- Denim Blue #3B5B92 ΔE 0.049
Use #3A4E7A 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.