#688E78
Closest named color: Slate Green (#658D6D). oklch(61.2% 0.054 158.9), rgb(104, 142, 120).
Aa
Black text reads best on this color (5.72:1).
About this color
#688E78 is a medium-dark, muted green. In OKLCH its lightness is 61%, its chroma 0.054 and its hue 159°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Slate Green (#658D6D), ΔE 0.016 away. Black text reads best on it, at 5.72:1.
| Hue family | Greens |
| Lightness | medium-dark (61%) |
| Chroma | muted (0.054) |
| Temperature | in between |
| Nearest name | Slate Green (#658D6D) |
| Black text | 5.72:1 |
| White text | 3.66:1 |
Values
| HEX | #688E78 |
| RGB | rgb(104, 142, 120) |
| HSL | hsl(145, 15%, 48%) |
| OKLCH | oklch(61.2% 0.054 158.9) |
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 #688E78 | 3.66:1 | AA large text | Lc -69.7 | Content text, not long reading |
| Black text on #688E78 | 5.72:1 | AA | Lc 39.9 | Non-text elements, placeholder text |
| #688E78 text on white | 3.66:1 | AA large text | Lc 64.2 | Content text, not long reading |
| #688E78 text on black | 5.72:1 | AA | Lc -37.5 | 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
#F3F6F4
oklch(97% 0.004 157.2)
-
Step 100
100
#E6EBE8
oklch(93.5% 0.007 160.1)
-
Step 200
200
#D1DCD6
oklch(88.4% 0.014 162.4)
-
Step 300
300
#B3C6BA
oklch(80.9% 0.027 158.1)
-
Step 400
400
#8BA997
oklch(70.7% 0.042 158.8)
-
Step 500
500 (this color)
#688E78
oklch(61.2% 0.054 158.9)
-
Step 600
600
#557E67
oklch(55.6% 0.058 159.2)
-
Step 700
700
#456A55
oklch(49% 0.054 158.7)
-
Step 800
800
#395746
oklch(42.8% 0.046 158.9)
-
Step 900
900
#31473B
oklch(37.6% 0.034 160.3)
-
Step 950
950
#1D2A22
oklch(27% 0.023 157.4)
#688E78 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) | #8D8877 | 0.051 |
| Deuteranopia (no green cones) | #878479 | 0.049 |
| Tritanopia (no blue cones) | #618E88 | 0.024 |
| Achromatopsia (no color) | #858585 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #688E78
#688E78
oklch(61.2% 0.054 158.9)
- #9A778F
#9A778F
oklch(61.1% 0.055 338.1)
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 #688E78, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Green #658D6D ΔE 0.016
- Green Grey #77926F ΔE 0.027
- Dusty Teal #4C9085 ΔE 0.031
- Grey Teal #5E9B8A ΔE 0.038
- Dull Teal #5F9E8F ΔE 0.047
- Sea #3C9992 ΔE 0.051
- Ocean Green #3D9973 ΔE 0.052
- Medium Grey #7D7F7C ΔE 0.052
Use #688E78 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.