#99BBBF
Closest named color: French Gray (#ADB5BD). oklch(76.8% 0.037 205.2), rgb(153, 187, 191).
Aa
Black text reads best on this color (10.21:1).
About this color
#99BBBF is a medium-light, muted teal or cyan. In OKLCH its lightness is 77%, its chroma 0.037 and its hue 205°. 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 10.21:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (77%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | French Gray (#ADB5BD) |
| Black text | 10.21:1 |
| White text | 2.05:1 |
Values
| HEX | #99BBBF |
| RGB | rgb(153, 187, 191) |
| HSL | hsl(186, 23%, 67%) |
| OKLCH | oklch(76.8% 0.037 205.2) |
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 #99BBBF | 2.05:1 | Fails | Lc -44.6 | Non-text elements, placeholder text |
| Black text on #99BBBF | 10.21:1 | AAA | Lc 63.9 | Content text, not long reading |
| #99BBBF text on white | 2.05:1 | Fails | Lc 40.1 | Non-text elements, placeholder text |
| #99BBBF text on black | 10.21:1 | AAA | Lc -62.2 | Content text, not long reading |
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 300.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECED
oklch(93.6% 0.011 204.1)
-
Step 200
200
#CADDE0
oklch(88.4% 0.021 208.1)
-
Step 300
300 (this color)
#99BBBF
oklch(76.8% 0.037 205.2)
-
Step 400
400
#74ACB2
oklch(70.8% 0.059 204.4)
-
Step 500
500
#4B979F
oklch(63.1% 0.076 204.5)
-
Step 600
600
#28818A
oklch(55.6% 0.082 204.8)
-
Step 700
700
#196D75
oklch(49.1% 0.076 204.6)
-
Step 800
800
#195960
oklch(42.8% 0.063 205.6)
-
Step 900
900
#1C494E
oklch(37.7% 0.049 205.2)
-
Step 950
950
#122B2E
oklch(27.1% 0.031 205.7)
#99BBBF 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) | #B5B8BF | 0.036 |
| Deuteranopia (no green cones) | #AEB3BF | 0.033 |
| Tritanopia (no blue cones) | #8EBEBC | 0.016 |
| Achromatopsia (no color) | #B5B5B5 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99BBBF
#99BBBF
oklch(76.8% 0.037 205.2)
- #CBABA8
#CBABA8
oklch(76.9% 0.038 24.3)
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 #99BBBF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Gray #ADB5BD ΔE 0.028
- Light Grey Blue #9DBCD4 ΔE 0.031
- Light Cornflower Blue #98C1D9 ΔE 0.036
- Cloudy Blue #ACC2D9 ΔE 0.047
- Dark Gray #A9A9A9 ΔE 0.050
- Cool Steel #97A7B3 ΔE 0.053
- Silver #C0C0C0 ΔE 0.054
- Light Steel Blue #B0C4DE ΔE 0.057
Use #99BBBF 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.