#364D87
Closest named color: Dusk Blue (#26538D). oklch(43.1% 0.1 266), rgb(54, 77, 135).
Aa
White text reads best on this color (8.17:1).
About this color
#364D87 is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.100 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.022 away. White text reads best on it, at 8.17:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.56:1 |
| White text | 8.17:1 |
Values
| HEX | #364D87 |
| RGB | rgb(54, 77, 135) |
| HSL | hsl(223, 43%, 37%) |
| OKLCH | oklch(43.1% 0.1 266) |
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 #364D87 | 8.17:1 | AAA | Lc -92.8 | Preferred for body text |
| Black text on #364D87 | 2.56:1 | Fails | Lc 15.9 | Dividers and decoration only |
| #364D87 text on white | 8.17:1 | AAA | Lc 88.1 | Fine for body text |
| #364D87 text on black | 2.56:1 | Fails | Lc -14.1 | 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
#E4EAF6
oklch(93.6% 0.017 264.5)
-
Step 200
200
#CFD9EF
oklch(88.4% 0.032 266.1)
-
Step 300
300
#AFC0E7
oklch(80.8% 0.058 266.6)
-
Step 400
400
#859FDC
oklch(70.6% 0.095 266.3)
-
Step 500
500
#6786D2
oklch(63% 0.12 266.2)
-
Step 600
600
#4F6FBF
oklch(55.6% 0.13 265.9)
-
Step 700
700
#405CA5
oklch(49% 0.122 266.2)
-
Step 800
800 (this color)
#364D87
oklch(43.1% 0.1 266)
-
Step 900
900
#2E406B
oklch(37.8% 0.077 265.7)
-
Step 950
950
#1B253F
oklch(26.9% 0.051 267)
#364D87 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) | #294C86 | 0.016 |
| Tritanopia (no blue cones) | #005A63 | 0.089 |
| Achromatopsia (no color) | #4F4F4F | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #364D87
#364D87
oklch(43.1% 0.1 266)
- #664C00
#664C00
oklch(43.2% 0.089 85.9)
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 #364D87, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.022
- Light Navy #155084 ΔE 0.031
- Cobalt #1E488F ΔE 0.034
- Twilight #4E518B ΔE 0.037
- Light Navy Blue #2E5A88 ΔE 0.038
- Deep Sea Blue #015482 ΔE 0.041
- Dusk #4E5481 ΔE 0.043
- Denim Blue #3B5B92 ΔE 0.043
Use #364D87 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.