#3A508A
Closest named color: Dusk Blue (#26538D). oklch(44.3% 0.099 266.7), rgb(58, 80, 138).
Aa
White text reads best on this color (7.79:1).
About this color
#3A508A is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.099 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.021 away. White text reads best on it, at 7.79:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.099) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.69:1 |
| White text | 7.79:1 |
Values
| HEX | #3A508A |
| RGB | rgb(58, 80, 138) |
| HSL | hsl(224, 41%, 38%) |
| OKLCH | oklch(44.3% 0.099 266.7) |
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 #3A508A | 7.79:1 | AAA | Lc -91.6 | Preferred for body text |
| Black text on #3A508A | 2.69:1 | Fails | Lc 17.1 | Dividers and decoration only |
| #3A508A text on white | 7.79:1 | AAA | Lc 86.9 | Fine for body text |
| #3A508A text on black | 2.69:1 | Fails | Lc -15.2 | Dividers and decoration only |
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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF6
oklch(93.7% 0.017 267.8)
-
Step 200
200
#CFD9EF
oklch(88.4% 0.032 266.1)
-
Step 300
300
#B0C0E7
oklch(80.9% 0.058 267.6)
-
Step 400
400
#869FDB
oklch(70.7% 0.093 266.7)
-
Step 500
500
#6986D1
oklch(63.1% 0.118 267)
-
Step 600
600
#516FBF
oklch(55.7% 0.129 266.7)
-
Step 700
700
#415CA4
oklch(49% 0.12 266.6)
-
Step 800
800 (this color)
#3A508A
oklch(44.3% 0.099 266.7)
-
Step 900
900
#2F3F6B
oklch(37.6% 0.078 267.5)
-
Step 950
950
#1B253E
oklch(26.8% 0.049 266.6)
#3A508A 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) | #37568C | 0.017 |
| Deuteranopia (no green cones) | #2D4F89 | 0.016 |
| Tritanopia (no blue cones) | #055D66 | 0.090 |
| Achromatopsia (no color) | #525252 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A508A
#3A508A
oklch(44.3% 0.099 266.7)
- #694F00
#694F00
oklch(44.3% 0.091 86.7)
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 #3A508A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.021
- Twilight #4E518B ΔE 0.028
- Light Navy Blue #2E5A88 ΔE 0.031
- Denim Blue #3B5B92 ΔE 0.032
- Dusk #4E5481 ΔE 0.035
- Light Navy #155084 ΔE 0.036
- Cobalt #1E488F ΔE 0.042
- Deep Sea Blue #015482 ΔE 0.045
Use #3A508A 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.