#718B99
Closest named color: Light Slate Gray (#778899). oklch(62.1% 0.036 231.6), rgb(113, 139, 153).
Aa
Black text reads best on this color (5.85:1).
About this color
#718B99 is a medium-light, muted blue. In OKLCH its lightness is 62%, its chroma 0.036 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Light Slate Gray (#778899), ΔE 0.011 away. Black text reads best on it, at 5.85:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | muted (0.036) |
| Temperature | cool |
| Nearest name | Light Slate Gray (#778899) |
| Black text | 5.85:1 |
| White text | 3.58:1 |
Values
| HEX | #718B99 |
| RGB | rgb(113, 139, 153) |
| HSL | hsl(201, 16%, 52%) |
| OKLCH | oklch(62.1% 0.036 231.6) |
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 #718B99 | 3.58:1 | AA large text | Lc -68.9 | Content text, not long reading |
| Black text on #718B99 | 5.85:1 | AA | Lc 40.6 | Non-text elements, placeholder text |
| #718B99 text on white | 3.58:1 | AA large text | Lc 63.5 | Content text, not long reading |
| #718B99 text on black | 5.85:1 | AA | Lc -38.2 | 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
#E7EAED
oklch(93.6% 0.005 247.9)
-
Step 200
200
#D3DADF
oklch(88.4% 0.01 238.5)
-
Step 300
300
#B6C3CA
oklch(80.9% 0.017 231)
-
Step 400
400
#90A4AF
oklch(70.7% 0.028 231.8)
-
Step 500
500 (this color)
#718B99
oklch(62.1% 0.036 231.6)
-
Step 600
600
#5C7887
oklch(55.6% 0.04 231.8)
-
Step 700
700
#4C6572
oklch(49.2% 0.036 231)
-
Step 800
800
#3E525D
oklch(42.6% 0.031 232.5)
-
Step 900
900
#35444C
oklch(37.7% 0.024 231.5)
-
Step 950
950
#1F282D
oklch(27% 0.016 232.4)
#718B99 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) | #848A9A | 0.026 |
| Deuteranopia (no green cones) | #7E8599 | 0.023 |
| Tritanopia (no blue cones) | #658F8F | 0.027 |
| Achromatopsia (no color) | #878787 | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #718B99
#718B99
oklch(62.1% 0.036 231.6)
- #998173
#998173
oklch(62.2% 0.036 52)
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 #718B99, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Slate Gray #778899 ΔE 0.011
- Blue Grey #758DA3 ΔE 0.016
- Steel #738595 ΔE 0.016
- Silver Lake Blue #778DA9 ΔE 0.026
- Steel Grey #6F828A ΔE 0.030
- Slate Gray #708090 ΔE 0.031
- Lavender Gray #7E7F9A ΔE 0.038
- Gray #808080 ΔE 0.042
Use #718B99 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.