#718C8B
Closest named color: Light Slate Gray (#778899). oklch(61.9% 0.031 193.6), rgb(113, 140, 139).
Aa
Black text reads best on this color (5.82:1).
About this color
#718C8B is a medium-dark, muted teal or cyan. In OKLCH its lightness is 62%, its chroma 0.031 and its hue 194°. Its hue sits on the cool side of the wheel. The nearest named color is Light Slate Gray (#778899), ΔE 0.029 away. Black text reads best on it, at 5.82:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (62%) |
| Chroma | muted (0.031) |
| Temperature | cool |
| Nearest name | Light Slate Gray (#778899) |
| Black text | 5.82:1 |
| White text | 3.60:1 |
Values
| HEX | #718C8B |
| RGB | rgb(113, 140, 139) |
| HSL | hsl(178, 11%, 50%) |
| OKLCH | oklch(61.9% 0.031 193.6) |
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 #718C8B | 3.60:1 | AA large text | Lc -69.1 | Content text, not long reading |
| Black text on #718C8B | 5.82:1 | AA | Lc 40.4 | Non-text elements, placeholder text |
| #718C8B text on white | 3.60:1 | AA large text | Lc 63.6 | Content text, not long reading |
| #718C8B text on black | 5.82:1 | AA | Lc -38.0 | 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
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E7EBEA
oklch(93.7% 0.004 179.7)
-
Step 200
200
#D3DBDA
oklch(88.5% 0.009 188.1)
-
Step 300
300
#B6C4C3
oklch(80.9% 0.015 191.7)
-
Step 400
400
#90A6A5
oklch(70.8% 0.025 193.3)
-
Step 500
500 (this color)
#718C8B
oklch(61.9% 0.031 193.6)
-
Step 600
600
#5D7A79
oklch(55.7% 0.033 193.6)
-
Step 700
700
#4C6766
oklch(49.2% 0.032 193.3)
-
Step 800
800
#3F5453
oklch(42.8% 0.026 192.6)
-
Step 900
900
#354545
oklch(37.7% 0.02 196.3)
-
Step 950
950
#1F2828
oklch(26.8% 0.013 196.4)
#718C8B 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) | #89898B | 0.033 |
| Deuteranopia (no green cones) | #83858B | 0.030 |
| Tritanopia (no blue cones) | #698E8C | 0.011 |
| Achromatopsia (no color) | #878787 | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #718C8B
#718C8B
oklch(61.9% 0.031 193.6)
- #977F80
#977F80
oklch(61.9% 0.03 15.1)
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 #718C8B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Slate Gray #778899 ΔE 0.029
- Steel #738595 ΔE 0.030
- Steel Grey #6F828A ΔE 0.030
- Gray #808080 ΔE 0.036
- Blue Grey #758DA3 ΔE 0.037
- Medium Grey #7D7F7C ΔE 0.038
- Slate Gray #708090 ΔE 0.039
- Dusty Teal #4C9085 ΔE 0.044
Use #718C8B 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.