#99B0BB
Closest named color: Cool Steel (#97A7B3). oklch(74.3% 0.03 228.2), rgb(153, 176, 187).
Aa
Black text reads best on this color (9.28:1).
About this color
#99B0BB is a medium-light, muted teal or cyan. In OKLCH its lightness is 74%, its chroma 0.030 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Steel (#97A7B3), ΔE 0.025 away. Black text reads best on it, at 9.28:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (74%) |
| Chroma | muted (0.030) |
| Temperature | cool |
| Nearest name | Cool Steel (#97A7B3) |
| Black text | 9.28:1 |
| White text | 2.26:1 |
Values
| HEX | #99B0BB |
| RGB | rgb(153, 176, 187) |
| HSL | hsl(199, 20%, 67%) |
| OKLCH | oklch(74.3% 0.03 228.2) |
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 #99B0BB | 2.26:1 | Fails | Lc -49.4 | Large or bold text, headings |
| Black text on #99B0BB | 9.28:1 | AAA | Lc 59.4 | Large or bold text, headings |
| #99B0BB text on white | 2.26:1 | Fails | Lc 44.6 | Non-text elements, placeholder text |
| #99B0BB text on black | 9.28:1 | AAA | Lc -57.5 | 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
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E6EBED
oklch(93.7% 0.006 223.5)
-
Step 200
200
#D2DBDF
oklch(88.6% 0.011 226)
-
Step 300
300
#B5C3CA
oklch(80.9% 0.018 229.1)
-
Step 400
400 (this color)
#99B0BB
oklch(74.3% 0.03 228.2)
-
Step 500
500
#728E9C
oklch(63% 0.038 229.7)
-
Step 600
600
#5A7987
oklch(55.7% 0.042 227.5)
-
Step 700
700
#496572
oklch(49% 0.039 228.3)
-
Step 800
800
#3D535D
oklch(42.8% 0.032 227.6)
-
Step 900
900
#34444C
oklch(37.6% 0.025 229.8)
-
Step 950
950
#1E282D
oklch(27% 0.017 229.8)
#99B0BB 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) | #AAAFBC | 0.023 |
| Deuteranopia (no green cones) | #A5ABBB | 0.020 |
| Tritanopia (no blue cones) | #90B3B3 | 0.020 |
| Achromatopsia (no color) | #ACACAC | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99B0BB
#99B0BB
oklch(74.3% 0.03 228.2)
- #BDA79C
#BDA79C
oklch(74.4% 0.03 48.3)
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 #99B0BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Steel #97A7B3 ΔE 0.025
- French Gray #ADB5BD ΔE 0.031
- Dark Gray #A9A9A9 ΔE 0.031
- Pewter #96A8A1 ΔE 0.038
- Cool Grey #95A3A6 ΔE 0.041
- Light Grey Blue #9DBCD4 ΔE 0.042
- Bluegrey #85A3B2 ΔE 0.046
- Bluey Grey #89A0B0 ΔE 0.050
Use #99B0BB 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.