#99B3BB
Closest named color: French Gray (#ADB5BD). oklch(75% 0.031 218.3), rgb(153, 179, 187).
Aa
Black text reads best on this color (9.52:1).
About this color
#99B3BB is a medium-light, muted teal or cyan. In OKLCH its lightness is 75%, its chroma 0.031 and its hue 218°. Its hue sits on the cool side of the wheel. The nearest named color is French Gray (#ADB5BD), ΔE 0.028 away. Black text reads best on it, at 9.52:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (75%) |
| Chroma | muted (0.031) |
| Temperature | cool |
| Nearest name | French Gray (#ADB5BD) |
| Black text | 9.52:1 |
| White text | 2.20:1 |
Values
| HEX | #99B3BB |
| RGB | rgb(153, 179, 187) |
| HSL | hsl(194, 20%, 67%) |
| OKLCH | oklch(75% 0.031 218.3) |
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 #99B3BB | 2.20:1 | Fails | Lc -48.2 | Large or bold text, headings |
| Black text on #99B3BB | 9.52:1 | AAA | Lc 60.5 | Content text, not long reading |
| #99B3BB text on white | 2.20:1 | Fails | Lc 43.4 | Non-text elements, placeholder text |
| #99B3BB text on black | 9.52:1 | AAA | Lc -58.7 | Large or bold text, headings |
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 400.
-
Step 50
50
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E6EBEC
oklch(93.7% 0.006 211)
-
Step 200
200
#D2DBDE
oklch(88.5% 0.011 219.6)
-
Step 300
300
#B4C4C9
oklch(81% 0.019 218.4)
-
Step 400
400 (this color)
#99B3BB
oklch(75% 0.031 218.3)
-
Step 500
500
#6F909A
oklch(63.2% 0.04 218.3)
-
Step 600
600
#577A84
oklch(55.7% 0.042 217.4)
-
Step 700
700
#476670
oklch(49% 0.039 219.9)
-
Step 800
800
#3A545B
oklch(42.8% 0.033 216.3)
-
Step 900
900
#32454B
oklch(37.7% 0.026 219.2)
-
Step 950
950
#1E282C
oklch(26.9% 0.016 224.2)
#99B3BB 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) | #AEB1BB | 0.028 |
| Deuteranopia (no green cones) | #A8ADBB | 0.024 |
| Tritanopia (no blue cones) | #8FB6B5 | 0.019 |
| Achromatopsia (no color) | #AFAFAF | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99B3BB
#99B3BB
oklch(75% 0.031 218.3)
- #C0A8A0
#C0A8A0
oklch(75% 0.03 39.3)
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 #99B3BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Gray #ADB5BD ΔE 0.028
- Cool Steel #97A7B3 ΔE 0.032
- Dark Gray #A9A9A9 ΔE 0.034
- Light Grey Blue #9DBCD4 ΔE 0.038
- Pewter #96A8A1 ΔE 0.041
- Cool Grey #95A3A6 ΔE 0.047
- Light Cornflower Blue #98C1D9 ΔE 0.048
- Bluegrey #85A3B2 ΔE 0.053
Use #99B3BB 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.