#538A6B
Closest named color: Slate Green (#658D6D). oklch(58.6% 0.076 158.2), rgb(83, 138, 107).
Aa
Black text reads best on this color (5.21:1).
About this color
#538A6B is a medium-dark, moderately saturated green. In OKLCH its lightness is 59%, its chroma 0.076 and its hue 158°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Slate Green (#658D6D), ΔE 0.023 away. Black text reads best on it, at 5.21:1.
| Hue family | Greens |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.076) |
| Temperature | in between |
| Nearest name | Slate Green (#658D6D) |
| Black text | 5.21:1 |
| White text | 4.02:1 |
Values
| HEX | #538A6B |
| RGB | rgb(83, 138, 107) |
| HSL | hsl(146, 25%, 43%) |
| OKLCH | oklch(58.6% 0.076 158.2) |
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 #538A6B | 4.02:1 | AA large text | Lc -72.9 | Content text, not long reading |
| Black text on #538A6B | 5.21:1 | AA | Lc 36.6 | Non-text elements, placeholder text |
| #538A6B text on white | 4.02:1 | AA large text | Lc 67.4 | Content text, not long reading |
| #538A6B text on black | 5.21:1 | AA | Lc -34.2 | 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 600.
-
Step 50
50
#F3F6F4
oklch(97% 0.004 157.2)
-
Step 100
100
#E5ECE7
oklch(93.6% 0.01 155.1)
-
Step 200
200
#CFDDD4
oklch(88.4% 0.019 157.8)
-
Step 300
300
#AFC8B8
oklch(80.9% 0.035 157.5)
-
Step 400
400
#84AB94
oklch(70.6% 0.054 158.8)
-
Step 500
500
#64977A
oklch(63.2% 0.07 158.7)
-
Step 600
600 (this color)
#538A6B
oklch(58.6% 0.076 158.2)
-
Step 700
700
#3B6D51
oklch(49.1% 0.071 157.8)
-
Step 800
800
#315943
oklch(42.7% 0.059 158.5)
-
Step 900
900
#2C4938
oklch(37.7% 0.046 157.6)
-
Step 950
950
#1A2B21
oklch(27% 0.029 157.9)
#538A6B 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) | #898269 | 0.071 |
| Deuteranopia (no green cones) | #807C6D | 0.069 |
| Tritanopia (no blue cones) | #478981 | 0.035 |
| Achromatopsia (no color) | #7F7F7F | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #538A6B
#538A6B
oklch(58.6% 0.076 158.2)
- #9A6A8C
#9A6A8C
oklch(58.5% 0.077 337.8)
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 #538A6B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Green #658D6D ΔE 0.023
- Dark Sage #598556 ΔE 0.028
- Dusty Teal #4C9085 ΔE 0.036
- Viridian #1E9167 ΔE 0.043
- Ocean Green #3D9973 ΔE 0.044
- Light Forest Green #4F9153 ΔE 0.045
- Sea Green #2E8B57 ΔE 0.047
- Green Grey #77926F ΔE 0.052
Use #538A6B 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.