#688B78
Closest named color: Slate Green (#658D6D). oklch(60.5% 0.049 160.8), rgb(104, 139, 120).
Aa
Black text reads best on this color (5.55:1).
About this color
#688B78 is a medium-dark, muted green. In OKLCH its lightness is 60%, its chroma 0.049 and its hue 161°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Slate Green (#658D6D), ΔE 0.020 away. Black text reads best on it, at 5.55:1.
| Hue family | Greens |
| Lightness | medium-dark (60%) |
| Chroma | muted (0.049) |
| Temperature | in between |
| Nearest name | Slate Green (#658D6D) |
| Black text | 5.55:1 |
| White text | 3.78:1 |
Values
| HEX | #688B78 |
| RGB | rgb(104, 139, 120) |
| HSL | hsl(147, 14%, 48%) |
| OKLCH | oklch(60.5% 0.049 160.8) |
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 #688B78 | 3.78:1 | AA large text | Lc -70.8 | Content text, not long reading |
| Black text on #688B78 | 5.55:1 | AA | Lc 38.7 | Non-text elements, placeholder text |
| #688B78 text on white | 3.78:1 | AA large text | Lc 65.3 | Content text, not long reading |
| #688B78 text on black | 5.55:1 | AA | Lc -36.3 | 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
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E6EBE8
oklch(93.5% 0.007 160.1)
-
Step 200
200
#D2DCD6
oklch(88.5% 0.013 159.9)
-
Step 300
300
#B4C6BC
oklch(81% 0.024 161.6)
-
Step 400
400
#8DA899
oklch(70.7% 0.037 161)
-
Step 500
500 (this color)
#688B78
oklch(60.5% 0.049 160.8)
-
Step 600
600
#577D69
oklch(55.5% 0.053 161.1)
-
Step 700
700
#476A57
oklch(49.2% 0.051 160.1)
-
Step 800
800
#3B5648
oklch(42.7% 0.04 161.5)
-
Step 900
900
#33473C
oklch(37.7% 0.031 160.4)
-
Step 950
950
#1E2A23
oklch(27.1% 0.021 159)
#688B78 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) | #8A8677 | 0.047 |
| Deuteranopia (no green cones) | #848179 | 0.046 |
| Tritanopia (no blue cones) | #618B85 | 0.020 |
| Achromatopsia (no color) | #838383 | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #688B78
#688B78
oklch(60.5% 0.049 160.8)
- #96768A
#96768A
oklch(60.3% 0.049 340.8)
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 #688B78, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Green #658D6D ΔE 0.020
- Dusty Teal #4C9085 ΔE 0.032
- Green Grey #77926F ΔE 0.034
- Grey Teal #5E9B8A ΔE 0.045
- Steel Grey #6F828A ΔE 0.045
- Medium Grey #7D7F7C ΔE 0.046
- Gray #808080 ΔE 0.049
- Brown Grey #8D8468 ΔE 0.052
Use #688B78 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.