#37524B
Closest named color: Dark Slate Gray (#2F4F4F). oklch(41.5% 0.035 176.6), rgb(55, 82, 75).
Aa
White text reads best on this color (8.49:1).
About this color
#37524B is a dark, muted teal or cyan. In OKLCH its lightness is 41%, its chroma 0.035 and its hue 177°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.017 away. White text reads best on it, at 8.49:1.
| Hue family | Teals and cyans |
| Lightness | dark (41%) |
| Chroma | muted (0.035) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.47:1 |
| White text | 8.49:1 |
Values
| HEX | #37524B |
| RGB | rgb(55, 82, 75) |
| HSL | hsl(164, 20%, 27%) |
| OKLCH | oklch(41.5% 0.035 176.6) |
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 #37524B | 8.49:1 | AAA | Lc -93.8 | Preferred for body text |
| Black text on #37524B | 2.47:1 | Fails | Lc 14.8 | Not readable |
| #37524B text on white | 8.49:1 | AAA | Lc 89.2 | Fine for body text |
| #37524B text on black | 2.47:1 | Fails | Lc -13.0 | 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
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E6EBEA
oklch(93.6% 0.006 183)
-
Step 200
200
#D2DCD9
oklch(88.6% 0.012 176.3)
-
Step 300
300
#B4C5C0
oklch(80.9% 0.02 176.3)
-
Step 400
400
#8CA8A0
oklch(70.8% 0.033 176.1)
-
Step 500
500
#6F9289
oklch(63.1% 0.041 177.4)
-
Step 600
600
#577C72
oklch(55.5% 0.045 176)
-
Step 700
700
#476960
oklch(49.2% 0.042 176.1)
-
Step 800
800 (this color)
#37524B
oklch(41.5% 0.035 176.6)
-
Step 900
900
#324641
oklch(37.6% 0.027 177.7)
-
Step 950
950
#1E2926
oklch(26.9% 0.016 176.5)
#37524B 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) | #504F4B | 0.037 |
| Deuteranopia (no green cones) | #4B4B4C | 0.035 |
| Tritanopia (no blue cones) | #2F5350 | 0.011 |
| Achromatopsia (no color) | #4D4D4D | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37524B
#37524B
oklch(41.5% 0.035 176.6)
- #5C444C
#5C444C
oklch(41.5% 0.035 356.9)
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 #37524B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.017
- Deep Teal #00555A ΔE 0.041
- Dark Blue Green #005249 ΔE 0.042
- Dark Teal #014D4E ΔE 0.048
- Charcoal #264653 ΔE 0.052
- Charcoal Grey #3C4142 ΔE 0.053
- Dark Green Blue #1F6357 ΔE 0.053
- Dark Grey Blue #29465B ΔE 0.058
Use #37524B 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.