#364D58
Closest named color: Dark Slate Gray (#2F4F4F). oklch(40.6% 0.034 229.1), rgb(54, 77, 88).
Aa
White text reads best on this color (8.90:1).
About this color
#364D58 is a dark, muted teal or cyan. In OKLCH its lightness is 41%, its chroma 0.034 and its hue 229°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.021 away. White text reads best on it, at 8.90:1.
| Hue family | Teals and cyans |
| Lightness | dark (41%) |
| Chroma | muted (0.034) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.35:1 |
| White text | 8.90:1 |
Values
| HEX | #364D58 |
| RGB | rgb(54, 77, 88) |
| HSL | hsl(199, 24%, 28%) |
| OKLCH | oklch(40.6% 0.034 229.1) |
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 #364D58 | 8.90:1 | AAA | Lc -94.8 | Preferred for body text |
| Black text on #364D58 | 2.35:1 | Fails | Lc 13.6 | Not readable |
| #364D58 text on white | 8.90:1 | AAA | Lc 90.4 | Preferred for body text |
| #364D58 text on black | 2.35:1 | Fails | Lc -11.9 | 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
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E6EBED
oklch(93.7% 0.006 223.5)
-
Step 200
200
#D2DBDF
oklch(88.6% 0.011 226)
-
Step 300
300
#B4C3CB
oklch(80.8% 0.02 230.8)
-
Step 400
400
#8DA5B1
oklch(70.7% 0.032 229.4)
-
Step 500
500
#718F9D
oklch(63.2% 0.04 228)
-
Step 600
600
#587988
oklch(55.7% 0.044 227.8)
-
Step 700
700
#486573
oklch(48.9% 0.041 229.4)
-
Step 800
800 (this color)
#364D58
oklch(40.6% 0.034 229.1)
-
Step 900
900
#33444D
oklch(37.6% 0.027 231.4)
-
Step 950
950
#1E282D
oklch(27% 0.017 229.8)
#364D58 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) | #474C59 | 0.024 |
| Deuteranopia (no green cones) | #424858 | 0.022 |
| Tritanopia (no blue cones) | #2A5050 | 0.024 |
| Achromatopsia (no color) | #4A4A4A | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #364D58
#364D58
oklch(40.6% 0.034 229.1)
- #594439
#594439
oklch(40.6% 0.034 49)
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 #364D58, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.021
- Dark Grey Blue #29465B ΔE 0.031
- Charcoal #264653 ΔE 0.032
- Deep Teal #00555A ΔE 0.043
- Charcoal Grey #3C4142 ΔE 0.044
- Dark Teal #014D4E ΔE 0.047
- Dark Blue Green #005249 ΔE 0.055
- Petrol #005F6A ΔE 0.060
Use #364D58 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.