#538C78
Closest named color: Dusty Teal (#4C9085). oklch(59.5% 0.068 169.5), rgb(83, 140, 120).
Aa
Black text reads best on this color (5.39:1).
About this color
#538C78 is a medium-dark, muted green. In OKLCH its lightness is 59%, its chroma 0.068 and its hue 170°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusty Teal (#4C9085), ΔE 0.019 away. Black text reads best on it, at 5.39:1.
| Hue family | Greens |
| Lightness | medium-dark (59%) |
| Chroma | muted (0.068) |
| Temperature | in between |
| Nearest name | Dusty Teal (#4C9085) |
| Black text | 5.39:1 |
| White text | 3.89:1 |
Values
| HEX | #538C78 |
| RGB | rgb(83, 140, 120) |
| HSL | hsl(159, 26%, 44%) |
| OKLCH | oklch(59.5% 0.068 169.5) |
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 #538C78 | 3.89:1 | AA large text | Lc -71.8 | Content text, not long reading |
| Black text on #538C78 | 5.39:1 | AA | Lc 37.8 | Non-text elements, placeholder text |
| #538C78 text on white | 3.89:1 | AA large text | Lc 66.3 | Content text, not long reading |
| #538C78 text on black | 5.39:1 | AA | Lc -35.4 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E4ECE9
oklch(93.6% 0.009 171.8)
-
Step 200
200
#CEDDD7
oklch(88.5% 0.018 170)
-
Step 300
300
#ACC8BD
oklch(80.9% 0.034 169.8)
-
Step 400
400
#80AC9B
oklch(70.8% 0.054 169)
-
Step 500
500 (this color)
#538C78
oklch(59.5% 0.068 169.5)
-
Step 600
600
#42816C
oklch(55.5% 0.074 169.7)
-
Step 700
700
#336D5A
oklch(49% 0.069 169.6)
-
Step 800
800
#2C594A
oklch(42.7% 0.056 169.7)
-
Step 900
900
#28493E
oklch(37.6% 0.044 170.5)
-
Step 950
950
#182B24
oklch(27% 0.028 168.9)
#538C78 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) | #898577 | 0.070 |
| Deuteranopia (no green cones) | #807E79 | 0.067 |
| Tritanopia (no blue cones) | #428D86 | 0.023 |
| Achromatopsia (no color) | #818181 | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #538C78
#538C78
oklch(59.5% 0.068 169.5)
- #9E6E85
#9E6E85
oklch(59.5% 0.068 349.1)
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 #538C78, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Teal #4C9085 ΔE 0.019
- Slate Green #658D6D ΔE 0.025
- Ocean Green #3D9973 ΔE 0.045
- Sea #3C9992 ΔE 0.045
- Dark Sage #598556 ΔE 0.046
- Grey Teal #5E9B8A ΔE 0.048
- Green Grey #77926F ΔE 0.049
- Dark Cyan #008B8B ΔE 0.050
Use #538C78 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.