#37534C
Closest named color: Dark Slate Gray (#2F4F4F). oklch(41.8% 0.036 177.1), rgb(55, 83, 76).
Aa
White text reads best on this color (8.38:1).
About this color
#37534C is a dark, muted teal or cyan. In OKLCH its lightness is 42%, its chroma 0.036 and its hue 177°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.019 away. White text reads best on it, at 8.38:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | muted (0.036) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.50:1 |
| White text | 8.38:1 |
Values
| HEX | #37534C |
| RGB | rgb(55, 83, 76) |
| HSL | hsl(165, 20%, 27%) |
| OKLCH | oklch(41.8% 0.036 177.1) |
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 #37534C | 8.38:1 | AAA | Lc -93.5 | Preferred for body text |
| Black text on #37534C | 2.50:1 | Fails | Lc 15.1 | Dividers and decoration only |
| #37534C text on white | 8.38:1 | AAA | Lc 88.9 | Fine for body text |
| #37534C text on black | 2.50:1 | Fails | Lc -13.3 | 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
#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
#B3C5C0
oklch(80.8% 0.021 177.3)
-
Step 400
400
#8BA8A0
oklch(70.7% 0.034 176.7)
-
Step 500
500
#6E9289
oklch(63% 0.042 177.8)
-
Step 600
600
#567D73
oklch(55.8% 0.047 176.8)
-
Step 700
700
#466960
oklch(49.1% 0.043 176.6)
-
Step 800
800 (this color)
#37534C
oklch(41.8% 0.036 177.1)
-
Step 900
900
#324741
oklch(37.8% 0.028 175.2)
-
Step 950
950
#1D2926
oklch(26.9% 0.017 177.9)
#37534C 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) | #51504C | 0.038 |
| Deuteranopia (no green cones) | #4C4C4D | 0.036 |
| Tritanopia (no blue cones) | #2F5451 | 0.011 |
| Achromatopsia (no color) | #4E4E4E | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37534C
#37534C
oklch(41.8% 0.036 177.1)
- #5D444D
#5D444D
oklch(41.7% 0.037 355.4)
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 #37534C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.019
- Deep Teal #00555A ΔE 0.041
- Dark Blue Green #005249 ΔE 0.042
- Dark Teal #014D4E ΔE 0.049
- Dark Green Blue #1F6357 ΔE 0.050
- Charcoal #264653 ΔE 0.054
- Charcoal Grey #3C4142 ΔE 0.056
- Petrol #005F6A ΔE 0.056
Use #37534C 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.