#688684
Closest named color: Steel Grey (#6F828A). oklch(59.6% 0.034 191.2), rgb(104, 134, 132).
Aa
Black text reads best on this color (5.33:1).
About this color
#688684 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 60%, its chroma 0.034 and its hue 191°. Its hue sits on the cool side of the wheel. The nearest named color is Steel Grey (#6F828A), ΔE 0.019 away. Black text reads best on it, at 5.33:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (60%) |
| Chroma | muted (0.034) |
| Temperature | cool |
| Nearest name | Steel Grey (#6F828A) |
| Black text | 5.33:1 |
| White text | 3.93:1 |
Values
| HEX | #688684 |
| RGB | rgb(104, 134, 132) |
| HSL | hsl(176, 13%, 47%) |
| OKLCH | oklch(59.6% 0.034 191.2) |
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 #688684 | 3.93:1 | AA large text | Lc -72.3 | Content text, not long reading |
| Black text on #688684 | 5.33:1 | AA | Lc 37.3 | Non-text elements, placeholder text |
| #688684 text on white | 3.93:1 | AA large text | Lc 66.8 | Content text, not long reading |
| #688684 text on black | 5.33:1 | AA | Lc -34.9 | 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
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E6EBEA
oklch(93.6% 0.006 183)
-
Step 200
200
#D3DBDA
oklch(88.5% 0.009 188.1)
-
Step 300
300
#B5C4C3
oklch(80.9% 0.017 192)
-
Step 400
400
#8EA6A4
oklch(70.6% 0.027 190.4)
-
Step 500
500 (this color)
#688684
oklch(59.6% 0.034 191.2)
-
Step 600
600
#5A7B79
oklch(55.7% 0.038 191.5)
-
Step 700
700
#4A6765
oklch(49% 0.034 190.8)
-
Step 800
800
#3D5453
oklch(42.7% 0.028 192.8)
-
Step 900
900
#344644
oklch(37.8% 0.023 187.8)
-
Step 950
950
#1F2928
oklch(27.1% 0.014 188.9)
#688684 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) | #828384 | 0.036 |
| Deuteranopia (no green cones) | #7D7E84 | 0.035 |
| Tritanopia (no blue cones) | #5F8885 | 0.011 |
| Achromatopsia (no color) | #808080 | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #688684
#688684
oklch(59.6% 0.034 191.2)
- #92777A
#92777A
oklch(59.6% 0.034 10.6)
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 #688684, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel Grey #6F828A ΔE 0.019
- Battleship Grey #6B7C85 ΔE 0.030
- Slate Gray #708090 ΔE 0.032
- Medium Grey #7D7F7C ΔE 0.032
- Steel #738595 ΔE 0.032
- Gray #808080 ΔE 0.034
- Grey Blue #647D8E ΔE 0.036
- Light Slate Gray #778899 ΔE 0.039
Use #688684 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.