#598B66
Closest named color: Slate Green (#658D6D). oklch(59.1% 0.078 151.7), rgb(89, 139, 102).
Aa
Black text reads best on this color (5.30:1).
About this color
#598B66 is a medium-dark, moderately saturated green. In OKLCH its lightness is 59%, its chroma 0.078 and its hue 152°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Slate Green (#658D6D), ΔE 0.019 away. Black text reads best on it, at 5.30:1.
| Hue family | Greens |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.078) |
| Temperature | in between |
| Nearest name | Slate Green (#658D6D) |
| Black text | 5.30:1 |
| White text | 3.95:1 |
Values
| HEX | #598B66 |
| RGB | rgb(89, 139, 102) |
| HSL | hsl(136, 22%, 45%) |
| OKLCH | oklch(59.1% 0.078 151.7) |
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 #598B66 | 3.95:1 | AA large text | Lc -72.3 | Content text, not long reading |
| Black text on #598B66 | 5.30:1 | AA | Lc 37.2 | Non-text elements, placeholder text |
| #598B66 text on white | 3.95:1 | AA large text | Lc 66.8 | Content text, not long reading |
| #598B66 text on black | 5.30:1 | AA | Lc -34.8 | 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
#E5ECE6
oklch(93.6% 0.011 149.9)
-
Step 200
200
#D0DDD3
oklch(88.5% 0.019 152.8)
-
Step 300
300
#B1C8B5
oklch(81% 0.036 150.4)
-
Step 400
400
#87AB8F
oklch(70.7% 0.056 151.5)
-
Step 500
500
#689674
oklch(63% 0.071 152.1)
-
Step 600
600 (this color)
#598B66
oklch(59.1% 0.078 151.7)
-
Step 700
700
#3F6D4C
oklch(49.2% 0.073 152)
-
Step 800
800
#35593E
oklch(42.8% 0.061 151.1)
-
Step 900
900
#2E4935
oklch(37.7% 0.047 151.8)
-
Step 950
950
#1B2B1F
oklch(27.1% 0.031 151.7)
#598B66 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) | #8B8364 | 0.068 |
| Deuteranopia (no green cones) | #837E68 | 0.065 |
| Tritanopia (no blue cones) | #518981 | 0.042 |
| Achromatopsia (no color) | #808080 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #598B66
#598B66
oklch(59.1% 0.078 151.7)
- #996C93
#996C93
oklch(59.1% 0.079 331.2)
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 #598B66, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Green #658D6D ΔE 0.019
- Dark Sage #598556 ΔE 0.024
- Light Forest Green #4F9153 ΔE 0.038
- Ocean Green #3D9973 ΔE 0.042
- Dusty Teal #4C9085 ΔE 0.043
- Viridian #1E9167 ΔE 0.044
- Green Grey #77926F ΔE 0.046
- Sea Green #2E8B57 ΔE 0.046
Use #598B66 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.