#37524E
Closest named color: Dark Slate Gray (#2F4F4F). oklch(41.6% 0.033 184.5), rgb(55, 82, 78).
Aa
White text reads best on this color (8.46:1).
About this color
#37524E is a dark, muted teal or cyan. In OKLCH its lightness is 42%, its chroma 0.033 and its hue 185°. 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 8.46:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | muted (0.033) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.47:1 |
| White text | 8.46:1 |
Values
| HEX | #37524E |
| RGB | rgb(55, 82, 78) |
| HSL | hsl(171, 20%, 27%) |
| OKLCH | oklch(41.6% 0.033 184.5) |
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 #37524E | 8.46:1 | AAA | Lc -93.7 | Preferred for body text |
| Black text on #37524E | 2.47:1 | Fails | Lc 14.9 | Not readable |
| #37524E text on white | 8.46:1 | AAA | Lc 89.1 | Fine for body text |
| #37524E text on black | 2.47:1 | Fails | Lc -13.1 | 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
#E6EBEA
oklch(93.6% 0.006 183)
-
Step 200
200
#D2DBDA
oklch(88.4% 0.01 189)
-
Step 300
300
#B4C5C2
oklch(81% 0.019 184.1)
-
Step 400
400
#8CA7A3
oklch(70.7% 0.03 185.6)
-
Step 500
500
#6F928C
oklch(63.2% 0.04 183.4)
-
Step 600
600
#567C76
oklch(55.6% 0.044 183.8)
-
Step 700
700
#466863
oklch(49% 0.04 184.5)
-
Step 800
800 (this color)
#37524E
oklch(41.6% 0.033 184.5)
-
Step 900
900
#324643
oklch(37.6% 0.026 184.7)
-
Step 950
950
#1E2927
oklch(27% 0.016 182.8)
#37524E 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) | #4F4F4E | 0.035 |
| Deuteranopia (no green cones) | #4A4B4E | 0.033 |
| Tritanopia (no blue cones) | #2F5351 | 0.010 |
| Achromatopsia (no color) | #4D4D4D | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37524E
#37524E
oklch(41.6% 0.033 184.5)
- #5C454A
#5C454A
oklch(41.7% 0.032 4.1)
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 #37524E, 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
- Deep Teal #00555A ΔE 0.040
- Dark Blue Green #005249 ΔE 0.043
- Dark Teal #014D4E ΔE 0.048
- Charcoal #264653 ΔE 0.050
- Charcoal Grey #3C4142 ΔE 0.052
- Dark Green Blue #1F6357 ΔE 0.053
- Dark Grey Blue #29465B ΔE 0.055
Use #37524E 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.