#37534A
Closest named color: Dark Slate Gray (#2F4F4F). oklch(41.7% 0.037 172.4), rgb(55, 83, 74).
Aa
White text reads best on this color (8.40:1).
About this color
#37534A is a dark, muted teal or cyan. In OKLCH its lightness is 42%, its chroma 0.037 and its hue 172°. 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 8.40:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.49:1 |
| White text | 8.40:1 |
Values
| HEX | #37534A |
| RGB | rgb(55, 83, 74) |
| HSL | hsl(161, 20%, 27%) |
| OKLCH | oklch(41.7% 0.037 172.4) |
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 #37534A | 8.40:1 | AAA | Lc -93.5 | Preferred for body text |
| Black text on #37534A | 2.49:1 | Fails | Lc 15.1 | Dividers and decoration only |
| #37534A text on white | 8.40:1 | AAA | Lc 88.9 | Fine for body text |
| #37534A text on black | 2.49:1 | 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
#E6EBE9
oklch(93.6% 0.006 170.4)
-
Step 200
200
#D2DCD8
oklch(88.6% 0.012 170.2)
-
Step 300
300
#B3C5BF
oklch(80.8% 0.021 173.8)
-
Step 400
400
#8CA89E
oklch(70.7% 0.034 171.7)
-
Step 500
500
#6E9386
oklch(63.2% 0.046 171.2)
-
Step 600
600
#567D70
oklch(55.7% 0.048 171.7)
-
Step 700
700
#46695E
oklch(49.1% 0.044 172.8)
-
Step 800
800 (this color)
#37534A
oklch(41.7% 0.037 172.4)
-
Step 900
900
#324740
oklch(37.8% 0.029 172.1)
-
Step 950
950
#1D2925
oklch(26.8% 0.018 172.4)
#37534A 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) | #514F4A | 0.039 |
| Deuteranopia (no green cones) | #4C4C4B | 0.036 |
| Tritanopia (no blue cones) | #305450 | 0.011 |
| Achromatopsia (no color) | #4D4D4D | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37534A
#37534A
oklch(41.7% 0.037 172.4)
- #5D444E
#5D444E
oklch(41.7% 0.038 353)
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 #37534A, 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 Blue Green #005249 ΔE 0.042
- Deep Teal #00555A ΔE 0.042
- Dark Teal #014D4E ΔE 0.050
- Dark Green Blue #1F6357 ΔE 0.050
- Charcoal #264653 ΔE 0.056
- Charcoal Grey #3C4142 ΔE 0.056
- Pine #2B5D34 ΔE 0.057
Use #37534A 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.