#3A4D87
Closest named color: Dusk Blue (#26538D). oklch(43.4% 0.099 268.4), rgb(58, 77, 135).
Aa
White text reads best on this color (8.10:1).
About this color
#3A4D87 is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.099 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.025 away. White text reads best on it, at 8.10:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.099) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.59:1 |
| White text | 8.10:1 |
Values
| HEX | #3A4D87 |
| RGB | rgb(58, 77, 135) |
| HSL | hsl(225, 40%, 38%) |
| OKLCH | oklch(43.4% 0.099 268.4) |
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 #3A4D87 | 8.10:1 | AAA | Lc -92.6 | Preferred for body text |
| Black text on #3A4D87 | 2.59:1 | Fails | Lc 16.1 | Dividers and decoration only |
| #3A4D87 text on white | 8.10:1 | AAA | Lc 87.9 | Fine for body text |
| #3A4D87 text on black | 2.59:1 | Fails | Lc -14.2 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF5
oklch(93.6% 0.016 266.3)
-
Step 200
200
#D0D9EF
oklch(88.5% 0.032 268)
-
Step 300
300
#B1C0E7
oklch(80.9% 0.058 268.6)
-
Step 400
400
#889FDB
oklch(70.8% 0.092 267.9)
-
Step 500
500
#6B85D1
oklch(63% 0.119 268.5)
-
Step 600
600
#546EBE
oklch(55.6% 0.128 268.5)
-
Step 700
700
#445BA4
oklch(49% 0.12 268.5)
-
Step 800
800 (this color)
#3A4D87
oklch(43.4% 0.099 268.4)
-
Step 900
900
#303F6A
oklch(37.6% 0.076 268.1)
-
Step 950
950
#1C253E
oklch(26.9% 0.049 268)
#3A4D87 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) | #345389 | 0.017 |
| Deuteranopia (no green cones) | #2B4D86 | 0.018 |
| Tritanopia (no blue cones) | #0D5A63 | 0.089 |
| Achromatopsia (no color) | #505050 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A4D87
#3A4D87
oklch(43.4% 0.099 268.4)
- #654D00
#654D00
oklch(43.3% 0.089 87.9)
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 #3A4D87, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.025
- Twilight #4E518B ΔE 0.033
- Light Navy #155084 ΔE 0.035
- Cobalt #1E488F ΔE 0.038
- Light Navy Blue #2E5A88 ΔE 0.038
- Dusk #4E5481 ΔE 0.039
- Denim Blue #3B5B92 ΔE 0.042
- Blueberry #464196 ΔE 0.045
Use #3A4D87 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.