#99AEB5
Closest named color: Cool Steel (#97A7B3). oklch(73.7% 0.025 219.8), rgb(153, 174, 181).
Aa
Black text reads best on this color (9.07:1).
About this color
#99AEB5 is a medium-light close to neutral grey. In OKLCH its lightness is 74%, its chroma 0.025. It has too little chroma to lean warm or cool. The nearest named color is Cool Steel (#97A7B3), ΔE 0.019 away. Black text reads best on it, at 9.07:1.
| Hue family | Neutrals |
| Lightness | medium-light (74%) |
| Chroma | close to neutral grey (0.025) |
| Temperature | neutral |
| Nearest name | Cool Steel (#97A7B3) |
| Black text | 9.07:1 |
| White text | 2.31:1 |
Values
| HEX | #99AEB5 |
| RGB | rgb(153, 174, 181) |
| HSL | hsl(195, 16%, 65%) |
| OKLCH | oklch(73.7% 0.025 219.8) |
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 #99AEB5 | 2.31:1 | Fails | Lc -50.5 | Large or bold text, headings |
| Black text on #99AEB5 | 9.07:1 | AAA | Lc 58.3 | Large or bold text, headings |
| #99AEB5 text on white | 2.31:1 | Fails | Lc 45.6 | Large or bold text, headings |
| #99AEB5 text on black | 9.07:1 | AAA | Lc -56.4 | 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
#E7EBEC
oklch(93.7% 0.005 214.3)
-
Step 200
200
#D3DBDD
oklch(88.6% 0.009 214.3)
-
Step 300
300
#B6C3C8
oklch(80.9% 0.016 222.7)
-
Step 400
400 (this color)
#99AEB5
oklch(73.7% 0.025 219.8)
-
Step 500
500
#748E97
oklch(63% 0.032 220.9)
-
Step 600
600
#5C7982
oklch(55.7% 0.036 218.8)
-
Step 700
700
#4C656E
oklch(49% 0.033 222)
-
Step 800
800
#3F5359
oklch(42.8% 0.027 218.1)
-
Step 900
900
#354449
oklch(37.6% 0.021 220.1)
-
Step 950
950
#1F282B
oklch(26.9% 0.014 220.1)
#99AEB5 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) | #AAACB5 | 0.023 |
| Deuteranopia (no green cones) | #A5A9B5 | 0.020 |
| Tritanopia (no blue cones) | #91B1B0 | 0.016 |
| Achromatopsia (no color) | #AAAAAA | 0.025 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99AEB5
#99AEB5
oklch(73.7% 0.025 219.8)
- #B9A59E
#B9A59E
oklch(73.7% 0.026 40.3)
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 #99AEB5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Steel #97A7B3 ΔE 0.019
- Dark Gray #A9A9A9 ΔE 0.026
- Pewter #96A8A1 ΔE 0.030
- Cool Grey #95A3A6 ΔE 0.033
- French Gray #ADB5BD ΔE 0.035
- Bluegrey #85A3B2 ΔE 0.042
- Bluey Grey #89A0B0 ΔE 0.046
- Cement #A5A391 ΔE 0.050
Use #99AEB5 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.