#364B60
Closest named color: Dark Grey Blue (#29465B). oklch(40.4% 0.044 249), rgb(54, 75, 96).
Aa
White text reads best on this color (9.00:1).
About this color
#364B60 is a dark, muted blue. In OKLCH its lightness is 40%, its chroma 0.044 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.025 away. White text reads best on it, at 9.00:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.33:1 |
| White text | 9.00:1 |
Values
| HEX | #364B60 |
| RGB | rgb(54, 75, 96) |
| HSL | hsl(210, 28%, 29%) |
| OKLCH | oklch(40.4% 0.044 249) |
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 #364B60 | 9.00:1 | AAA | Lc -95.0 | Preferred for body text |
| Black text on #364B60 | 2.33:1 | Fails | Lc 13.3 | Not readable |
| #364B60 text on white | 9.00:1 | AAA | Lc 90.6 | Preferred for body text |
| #364B60 text on black | 2.33:1 | Fails | Lc -11.7 | 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
#F4F6F8
oklch(97.2% 0.003 247.9)
-
Step 100
100
#E6EAEF
oklch(93.5% 0.008 253.9)
-
Step 200
200
#D2DAE2
oklch(88.5% 0.014 248)
-
Step 300
300
#B4C2D1
oklch(80.8% 0.026 250)
-
Step 400
400
#8DA3BA
oklch(70.6% 0.042 249.6)
-
Step 500
500
#718DA9
oklch(63.2% 0.053 248.7)
-
Step 600
600
#597694
oklch(55.5% 0.058 249.8)
-
Step 700
700
#49637E
oklch(49% 0.054 249.9)
-
Step 800
800 (this color)
#364B60
oklch(40.4% 0.044 249)
-
Step 900
900
#334353
oklch(37.6% 0.034 248.8)
-
Step 950
950
#1E2731
oklch(26.9% 0.023 251.3)
#364B60 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) | #434B61 | 0.019 |
| Deuteranopia (no green cones) | #3E4760 | 0.016 |
| Tritanopia (no blue cones) | #275052 | 0.038 |
| Achromatopsia (no color) | #494949 | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #364B60
#364B60
oklch(40.4% 0.044 249)
- #59452E
#59452E
oklch(40.6% 0.045 69.9)
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 #364B60, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.025
- Charcoal #264653 ΔE 0.034
- Dark Slate Gray #2F4F4F ΔE 0.037
- Charcoal Grey #3C4142 ΔE 0.051
- Deep Teal #00555A ΔE 0.051
- Dark Teal #014D4E ΔE 0.057
- YInMn Blue #415A77 ΔE 0.057
- Deep Sea Blue #015482 ΔE 0.063
Use #364B60 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.