#3A5288
Closest named color: Dusk Blue (#26538D). oklch(44.6% 0.094 264.8), rgb(58, 82, 136).
Aa
White text reads best on this color (7.65:1).
About this color
#3A5288 is a dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.094 and its hue 265°. 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 7.65:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.74:1 |
| White text | 7.65:1 |
Values
| HEX | #3A5288 |
| RGB | rgb(58, 82, 136) |
| HSL | hsl(222, 40%, 38%) |
| OKLCH | oklch(44.6% 0.094 264.8) |
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 #3A5288 | 7.65:1 | AAA | Lc -91.2 | Preferred for body text |
| Black text on #3A5288 | 2.74:1 | Fails | Lc 17.6 | Dividers and decoration only |
| #3A5288 text on white | 7.65:1 | AAA | Lc 86.5 | Fine for body text |
| #3A5288 text on black | 2.74:1 | Fails | Lc -15.6 | 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
#E5EAF5
oklch(93.6% 0.016 266.3)
-
Step 200
200
#CFD9EE
oklch(88.4% 0.031 265.3)
-
Step 300
300
#AFC1E5
oklch(80.9% 0.055 264.2)
-
Step 400
400
#86A0D8
oklch(70.7% 0.088 265)
-
Step 500
500
#6887CD
oklch(63% 0.112 265.2)
-
Step 600
600
#4F70BA
oklch(55.5% 0.122 264.6)
-
Step 700
700
#405EA1
oklch(49.2% 0.113 264.4)
-
Step 800
800 (this color)
#3A5288
oklch(44.6% 0.094 264.8)
-
Step 900
900
#2E4068
oklch(37.6% 0.073 264.8)
-
Step 950
950
#1B263D
oklch(27% 0.046 264.1)
#3A5288 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) | #3C578A | 0.015 |
| Deuteranopia (no green cones) | #325087 | 0.012 |
| Tritanopia (no blue cones) | #095E66 | 0.085 |
| Achromatopsia (no color) | #535353 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A5288
#3A5288
oklch(44.6% 0.094 264.8)
- #6B4F00
#6B4F00
oklch(44.5% 0.091 85)
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 #3A5288, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.021
- Light Navy Blue #2E5A88 ΔE 0.025
- Twilight #4E518B ΔE 0.028
- Denim Blue #3B5B92 ΔE 0.028
- Dusk #4E5481 ΔE 0.031
- Light Navy #155084 ΔE 0.036
- Deep Sea Blue #015482 ΔE 0.043
- YInMn Blue #415A77 ΔE 0.043
Use #3A5288 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.