#688C8C
Closest named color: Steel Grey (#6F828A). oklch(61.3% 0.04 196.2), rgb(104, 140, 140).
Aa
Black text reads best on this color (5.71:1).
About this color
#688C8C is a medium-dark, muted teal or cyan. In OKLCH its lightness is 61%, its chroma 0.040 and its hue 196°. Its hue sits on the cool side of the wheel. The nearest named color is Steel Grey (#6F828A), ΔE 0.029 away. Black text reads best on it, at 5.71:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (61%) |
| Chroma | muted (0.040) |
| Temperature | cool |
| Nearest name | Steel Grey (#6F828A) |
| Black text | 5.71:1 |
| White text | 3.67:1 |
Values
| HEX | #688C8C |
| RGB | rgb(104, 140, 140) |
| HSL | hsl(180, 15%, 48%) |
| OKLCH | oklch(61.3% 0.04 196.2) |
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 #688C8C | 3.67:1 | AA large text | Lc -69.8 | Content text, not long reading |
| Black text on #688C8C | 5.71:1 | AA | Lc 39.8 | Non-text elements, placeholder text |
| #688C8C text on white | 3.67:1 | AA large text | Lc 64.3 | Content text, not long reading |
| #688C8C text on black | 5.71:1 | AA | Lc -37.4 | 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
#B3C5C5
oklch(81% 0.02 196.8)
-
Step 400
400
#8BA7A7
oklch(70.7% 0.031 196.5)
-
Step 500
500 (this color)
#688C8C
oklch(61.3% 0.04 196.2)
-
Step 600
600
#557C7C
oklch(55.7% 0.044 196)
-
Step 700
700
#456868
oklch(49.1% 0.04 195.9)
-
Step 800
800
#395555
oklch(42.7% 0.033 196)
-
Step 900
900
#314646
oklch(37.7% 0.026 196.1)
-
Step 950
950
#1D2929
oklch(27% 0.017 196.2)
#688C8C 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) | #87888C | 0.042 |
| Deuteranopia (no green cones) | #80838C | 0.039 |
| Tritanopia (no blue cones) | #5C8E8C | 0.014 |
| Achromatopsia (no color) | #858585 | 0.040 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #688C8C
#688C8C
oklch(61.3% 0.04 196.2)
- #9B7B7C
#9B7B7C
oklch(61.4% 0.04 16.2)
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 #688C8C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel Grey #6F828A ΔE 0.029
- Steel #738595 ΔE 0.031
- Light Slate Gray #778899 ΔE 0.033
- Dusty Teal #4C9085 ΔE 0.035
- Slate Gray #708090 ΔE 0.038
- Blue Grey #758DA3 ΔE 0.040
- Gray #808080 ΔE 0.042
- Medium Grey #7D7F7C ΔE 0.043
Use #688C8C 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.