#3A507A
Closest named color: Dusk (#4E5481). oklch(43.3% 0.075 262.6), rgb(58, 80, 122).
Aa
White text reads best on this color (8.05:1).
About this color
#3A507A is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.075 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.034 away. White text reads best on it, at 8.05:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.60:1 |
| White text | 8.05:1 |
Values
| HEX | #3A507A |
| RGB | rgb(58, 80, 122) |
| HSL | hsl(219, 36%, 35%) |
| OKLCH | oklch(43.3% 0.075 262.6) |
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 #3A507A | 8.05:1 | AAA | Lc -92.5 | Preferred for body text |
| Black text on #3A507A | 2.60:1 | Fails | Lc 16.2 | Dividers and decoration only |
| #3A507A text on white | 8.05:1 | AAA | Lc 87.8 | Fine for body text |
| #3A507A text on black | 2.60:1 | Fails | Lc -14.4 | 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
#E5EAF3
oklch(93.6% 0.013 262.4)
-
Step 200
200
#D1DAEA
oklch(88.6% 0.024 262.1)
-
Step 300
300
#B2C1DE
oklch(80.9% 0.044 263.6)
-
Step 400
400
#89A1CD
oklch(70.7% 0.07 262.4)
-
Step 500
500
#6C89C0
oklch(63% 0.09 262.7)
-
Step 600
600
#5472AD
oklch(55.5% 0.099 263)
-
Step 700
700
#446094
oklch(49.1% 0.09 262)
-
Step 800
800 (this color)
#3A507A
oklch(43.3% 0.075 262.6)
-
Step 900
900
#314161
oklch(37.7% 0.059 263.5)
-
Step 950
950
#1D2639
oklch(27% 0.038 264.5)
#3A507A 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) | #40537C | 0.013 |
| Deuteranopia (no green cones) | #384D79 | 0.010 |
| Tritanopia (no blue cones) | #1D595F | 0.067 |
| Achromatopsia (no color) | #505050 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A507A
#3A507A
oklch(43.3% 0.075 262.6)
- #654C19
#654C19
oklch(43.3% 0.075 81.9)
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 #3A507A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.034
- Light Navy Blue #2E5A88 ΔE 0.034
- YInMn Blue #415A77 ΔE 0.035
- Dusk Blue #26538D ΔE 0.035
- Light Navy #155084 ΔE 0.037
- Deep Sea Blue #015482 ΔE 0.041
- Twilight #4E518B ΔE 0.041
- Denim Blue #3B5B92 ΔE 0.046
Use #3A507A 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.