#718D99
Closest named color: Light Slate Gray (#778899). oklch(62.6% 0.037 225.8), rgb(113, 141, 153).
Aa
Black text reads best on this color (5.97:1).
About this color
#718D99 is a medium-light, muted teal or cyan. In OKLCH its lightness is 63%, its chroma 0.037 and its hue 226°. Its hue sits on the cool side of the wheel. The nearest named color is Light Slate Gray (#778899), ΔE 0.016 away. Black text reads best on it, at 5.97:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (63%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | Light Slate Gray (#778899) |
| Black text | 5.97:1 |
| White text | 3.51:1 |
Values
| HEX | #718D99 |
| RGB | rgb(113, 141, 153) |
| HSL | hsl(198, 16%, 52%) |
| OKLCH | oklch(62.6% 0.037 225.8) |
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 #718D99 | 3.51:1 | AA large text | Lc -68.2 | Content text, not long reading |
| Black text on #718D99 | 5.97:1 | AA | Lc 41.3 | Non-text elements, placeholder text |
| #718D99 text on white | 3.51:1 | AA large text | Lc 62.7 | Content text, not long reading |
| #718D99 text on black | 5.97:1 | AA | Lc -39.0 | 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
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E6EBEC
oklch(93.7% 0.006 211)
-
Step 200
200
#D3DBDE
oklch(88.6% 0.01 222.1)
-
Step 300
300
#B5C3C9
oklch(80.8% 0.018 225.2)
-
Step 400
400
#8FA5AE
oklch(70.8% 0.028 224.4)
-
Step 500
500 (this color)
#718D99
oklch(62.6% 0.037 225.8)
-
Step 600
600
#5B7985
oklch(55.7% 0.039 224.4)
-
Step 700
700
#4A6571
oklch(49% 0.037 227.1)
-
Step 800
800
#3D535C
oklch(42.8% 0.031 225)
-
Step 900
900
#34444B
oklch(37.6% 0.024 226.4)
-
Step 950
950
#1F282C
oklch(27% 0.015 226.6)
#718D99 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) | #868B9A | 0.028 |
| Deuteranopia (no green cones) | #808799 | 0.025 |
| Tritanopia (no blue cones) | #659191 | 0.024 |
| Achromatopsia (no color) | #898989 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #718D99
#718D99
oklch(62.6% 0.037 225.8)
- #9C8276
#9C8276
oklch(62.7% 0.037 46.2)
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 #718D99, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Slate Gray #778899 ΔE 0.016
- Blue Grey #758DA3 ΔE 0.017
- Steel #738595 ΔE 0.022
- Silver Lake Blue #778DA9 ΔE 0.027
- Steel Grey #6F828A ΔE 0.034
- Slate Gray #708090 ΔE 0.036
- Lavender Gray #7E7F9A ΔE 0.043
- Gray #808080 ΔE 0.045
Use #718D99 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.