#668A89
Closest named color: Steel Grey (#6F828A). oklch(60.6% 0.04 194), rgb(102, 138, 137).
Aa
Black text reads best on this color (5.56:1).
About this color
#668A89 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 61%, its chroma 0.040 and its hue 194°. Its hue sits on the cool side of the wheel. The nearest named color is Steel Grey (#6F828A), ΔE 0.026 away. Black text reads best on it, at 5.56:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (61%) |
| Chroma | muted (0.040) |
| Temperature | cool |
| Nearest name | Steel Grey (#6F828A) |
| Black text | 5.56:1 |
| White text | 3.77:1 |
Values
| HEX | #668A89 |
| RGB | rgb(102, 138, 137) |
| HSL | hsl(178, 15%, 47%) |
| OKLCH | oklch(60.6% 0.04 194) |
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 #668A89 | 3.77:1 | AA large text | Lc -70.8 | Content text, not long reading |
| Black text on #668A89 | 5.56:1 | AA | Lc 38.8 | Non-text elements, placeholder text |
| #668A89 text on white | 3.77:1 | AA large text | Lc 65.3 | Content text, not long reading |
| #668A89 text on black | 5.56:1 | AA | Lc -36.4 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E6EBEB
oklch(93.6% 0.005 197.1)
-
Step 200
200
#D1DBDB
oklch(88.4% 0.011 197)
-
Step 300
300
#B3C5C4
oklch(80.9% 0.02 192.7)
-
Step 400
400
#8BA7A6
oklch(70.7% 0.031 193.8)
-
Step 500
500 (this color)
#668A89
oklch(60.6% 0.04 194)
-
Step 600
600
#557C7B
oklch(55.7% 0.044 194)
-
Step 700
700
#456867
oklch(49% 0.04 193.7)
-
Step 800
800
#395554
oklch(42.7% 0.034 193.2)
-
Step 900
900
#314646
oklch(37.7% 0.026 196.1)
-
Step 950
950
#1D2929
oklch(27% 0.017 196.2)
#668A89 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) | #868689 | 0.043 |
| Deuteranopia (no green cones) | #7F8189 | 0.040 |
| Tritanopia (no blue cones) | #5A8C8A | 0.014 |
| Achromatopsia (no color) | #838383 | 0.040 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #668A89
#668A89
oklch(60.6% 0.04 194)
- #99797B
#99797B
oklch(60.7% 0.04 14.1)
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 #668A89, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel Grey #6F828A ΔE 0.026
- Steel #738595 ΔE 0.032
- Dusty Teal #4C9085 ΔE 0.033
- Slate Gray #708090 ΔE 0.036
- Light Slate Gray #778899 ΔE 0.036
- Battleship Grey #6B7C85 ΔE 0.040
- Medium Grey #7D7F7C ΔE 0.040
- Gray #808080 ΔE 0.041
Use #668A89 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.