#364D63
Closest named color: Dark Grey Blue (#29465B). oklch(41.1% 0.047 247.9), rgb(54, 77, 99).
Aa
White text reads best on this color (8.75:1).
About this color
#364D63 is a dark, muted blue. In OKLCH its lightness is 41%, its chroma 0.047 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.031 away. White text reads best on it, at 8.75:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.39:1 |
| White text | 8.75:1 |
Values
| HEX | #364D63 |
| RGB | rgb(54, 77, 99) |
| HSL | hsl(209, 29%, 30%) |
| OKLCH | oklch(41.1% 0.047 247.9) |
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 #364D63 | 8.75:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #364D63 | 2.39:1 | Fails | Lc 14.0 | Not readable |
| #364D63 text on white | 8.75:1 | AAA | Lc 89.9 | Fine for body text |
| #364D63 text on black | 2.39:1 | Fails | Lc -12.3 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E6EAEF
oklch(93.5% 0.008 253.9)
-
Step 200
200
#D2DAE3
oklch(88.5% 0.015 251.2)
-
Step 300
300
#B3C3D2
oklch(81% 0.028 246.4)
-
Step 400
400
#8CA4BB
oklch(70.8% 0.043 247.3)
-
Step 500
500
#6F8DAA
oklch(63.1% 0.056 247.8)
-
Step 600
600
#577796
oklch(55.7% 0.061 248.2)
-
Step 700
700
#476480
oklch(49.2% 0.057 248.2)
-
Step 800
800 (this color)
#364D63
oklch(41.1% 0.047 247.9)
-
Step 900
900
#324354
oklch(37.6% 0.037 248.8)
-
Step 950
950
#1E2831
oklch(27.1% 0.022 245.9)
#364D63 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) | #444D64 | 0.020 |
| Deuteranopia (no green cones) | #3F4963 | 0.017 |
| Tritanopia (no blue cones) | #255254 | 0.040 |
| Achromatopsia (no color) | #4B4B4B | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #364D63
#364D63
oklch(41.1% 0.047 247.9)
- #5C462E
#5C462E
oklch(41.1% 0.048 68.3)
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 #364D63, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.031
- Dark Slate Gray #2F4F4F ΔE 0.039
- Charcoal #264653 ΔE 0.040
- YInMn Blue #415A77 ΔE 0.050
- Deep Teal #00555A ΔE 0.050
- Charcoal Grey #3C4142 ΔE 0.058
- Deep Sea Blue #015482 ΔE 0.058
- Light Navy #155084 ΔE 0.059
Use #364D63 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.