#537666
Closest named color: Dim Gray (#696969). oklch(53.4% 0.047 164.7), rgb(83, 118, 102).
Aa
White text reads best on this color (5.05:1).
About this color
#537666 is a medium-dark, muted green. In OKLCH its lightness is 53%, its chroma 0.047 and its hue 165°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dim Gray (#696969), ΔE 0.049 away. White text reads best on it, at 5.05:1.
| Hue family | Greens |
| Lightness | medium-dark (53%) |
| Chroma | muted (0.047) |
| Temperature | in between |
| Nearest name | Dim Gray (#696969) |
| Black text | 4.15:1 |
| White text | 5.05:1 |
Values
| HEX | #537666 |
| RGB | rgb(83, 118, 102) |
| HSL | hsl(153, 17%, 39%) |
| OKLCH | oklch(53.4% 0.047 164.7) |
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 #537666 | 5.05:1 | AA | Lc -80.3 | Fine for body text |
| Black text on #537666 | 4.15:1 | AA large text | Lc 29.2 | Dividers and decoration only |
| #537666 text on white | 5.05:1 | AA | Lc 74.9 | Content text, not long reading |
| #537666 text on black | 4.15:1 | AA large text | Lc -26.8 | Dividers and decoration only |
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 600.
-
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
#D2DCD7
oklch(88.5% 0.013 164.8)
-
Step 300
300
#B5C5BD
oklch(80.9% 0.021 164.5)
-
Step 400
400
#8EA89B
oklch(70.8% 0.034 163.8)
-
Step 500
500
#719283
oklch(63% 0.043 165.5)
-
Step 600
600 (this color)
#537666
oklch(53.4% 0.047 164.7)
-
Step 700
700
#49695A
oklch(49.1% 0.044 164)
-
Step 800
800
#3C564A
oklch(42.8% 0.037 164.5)
-
Step 900
900
#34473E
oklch(37.9% 0.029 164.3)
-
Step 950
950
#1E2924
oklch(26.9% 0.018 165.6)
#537666 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) | #757165 | 0.048 |
| Deuteranopia (no green cones) | #6E6D67 | 0.044 |
| Tritanopia (no blue cones) | #4B7671 | 0.018 |
| Achromatopsia (no color) | #6F6F6F | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #537666
#537666
oklch(53.4% 0.047 164.7)
- #826273
#826273
oklch(53.4% 0.048 345.7)
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 #537666, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dim Gray #696969 ΔE 0.049
- Battleship Gray #6C757D ΔE 0.053
- Bluegreen #017A79 ΔE 0.054
- Teal #008080 ΔE 0.058
- Deep Aqua #08787F ΔE 0.059
- Dark Aquamarine #017371 ΔE 0.059
- Dark Sage #598556 ΔE 0.059
- Deep Turquoise #017374 ΔE 0.060
Use #537666 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.