#364E55
Closest named color: Dark Slate Gray (#2F4F4F). oklch(40.7% 0.032 217.8), rgb(54, 78, 85).
Aa
White text reads best on this color (8.83:1).
About this color
#364E55 is a dark, muted teal or cyan. In OKLCH its lightness is 41%, its chroma 0.032 and its hue 218°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.015 away. White text reads best on it, at 8.83:1.
| Hue family | Teals and cyans |
| Lightness | dark (41%) |
| Chroma | muted (0.032) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.37:1 |
| White text | 8.83:1 |
Values
| HEX | #364E55 |
| RGB | rgb(54, 78, 85) |
| HSL | hsl(194, 22%, 27%) |
| OKLCH | oklch(40.7% 0.032 217.8) |
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 #364E55 | 8.83:1 | AAA | Lc -94.6 | Preferred for body text |
| Black text on #364E55 | 2.37:1 | Fails | Lc 13.8 | Not readable |
| #364E55 text on white | 8.83:1 | AAA | Lc 90.2 | Preferred for body text |
| #364E55 text on black | 2.37:1 | Fails | Lc -12.1 | 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
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E6EBEC
oklch(93.7% 0.006 211)
-
Step 200
200
#D2DBDE
oklch(88.5% 0.011 219.6)
-
Step 300
300
#B4C4C8
oklch(80.9% 0.018 214.4)
-
Step 400
400
#8DA5AD
oklch(70.6% 0.029 219.9)
-
Step 500
500
#708F99
oklch(63% 0.038 219.5)
-
Step 600
600
#587A83
oklch(55.7% 0.041 215.9)
-
Step 700
700
#48666F
oklch(49% 0.038 218.4)
-
Step 800
800 (this color)
#364E55
oklch(40.7% 0.032 217.8)
-
Step 900
900
#33454A
oklch(37.7% 0.024 216.7)
-
Step 950
950
#1E282B
oklch(26.9% 0.015 218)
#364E55 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) | #494C55 | 0.027 |
| Deuteranopia (no green cones) | #444955 | 0.024 |
| Tritanopia (no blue cones) | #2B5150 | 0.020 |
| Achromatopsia (no color) | #4A4A4A | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #364E55
#364E55
oklch(40.7% 0.032 217.8)
- #59443D
#59443D
oklch(40.7% 0.031 39.2)
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 #364E55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.015
- Charcoal #264653 ΔE 0.035
- Dark Grey Blue #29465B ΔE 0.036
- Deep Teal #00555A ΔE 0.040
- Charcoal Grey #3C4142 ΔE 0.044
- Dark Teal #014D4E ΔE 0.045
- Dark Blue Green #005249 ΔE 0.050
- Petrol #005F6A ΔE 0.059
Use #364E55 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.