#668A7D
Closest named color: Slate Green (#658D6D). oklch(60.2% 0.045 170.5), rgb(102, 138, 125).
Aa
Black text reads best on this color (5.49:1).
About this color
#668A7D is a medium-dark, muted teal or cyan. In OKLCH its lightness is 60%, its chroma 0.045 and its hue 171°. Its hue sits on the cool side of the wheel. The nearest named color is Slate Green (#658D6D), ΔE 0.028 away. Black text reads best on it, at 5.49:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (60%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Slate Green (#658D6D) |
| Black text | 5.49:1 |
| White text | 3.82:1 |
Values
| HEX | #668A7D |
| RGB | rgb(102, 138, 125) |
| HSL | hsl(158, 15%, 47%) |
| OKLCH | oklch(60.2% 0.045 170.5) |
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 #668A7D | 3.82:1 | AA large text | Lc -71.2 | Content text, not long reading |
| Black text on #668A7D | 5.49:1 | AA | Lc 38.4 | Non-text elements, placeholder text |
| #668A7D text on white | 3.82:1 | AA large text | Lc 65.7 | Content text, not long reading |
| #668A7D text on black | 5.49:1 | AA | Lc -36.0 | 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
#E6EBE9
oklch(93.6% 0.006 170.4)
-
Step 200
200
#D2DCD8
oklch(88.6% 0.012 170.2)
-
Step 300
300
#B3C5BE
oklch(80.8% 0.022 170.5)
-
Step 400
400
#8CA89D
oklch(70.7% 0.035 169.5)
-
Step 500
500 (this color)
#668A7D
oklch(60.2% 0.045 170.5)
-
Step 600
600
#567D6F
oklch(55.6% 0.049 170.1)
-
Step 700
700
#46695D
oklch(49% 0.045 171)
-
Step 800
800
#3A564C
oklch(42.8% 0.038 170.3)
-
Step 900
900
#32473F
oklch(37.8% 0.03 169.2)
-
Step 950
950
#1D2925
oklch(26.8% 0.018 172.4)
#668A7D 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) | #88857C | 0.047 |
| Deuteranopia (no green cones) | #81817E | 0.043 |
| Tritanopia (no blue cones) | #5D8B86 | 0.015 |
| Achromatopsia (no color) | #828282 | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #668A7D
#668A7D
oklch(60.2% 0.045 170.5)
- #977684
#977684
oklch(60.2% 0.046 351.3)
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 #668A7D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Green #658D6D ΔE 0.028
- Dusty Teal #4C9085 ΔE 0.029
- Steel Grey #6F828A ΔE 0.038
- Medium Grey #7D7F7C ΔE 0.042
- Green Grey #77926F ΔE 0.042
- Gray #808080 ΔE 0.045
- Grey Teal #5E9B8A ΔE 0.047
- Battleship Grey #6B7C85 ΔE 0.047
Use #668A7D 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.