#99A3B6
Closest named color: Cool Steel (#97A7B3). oklch(71.4% 0.03 263.4), rgb(153, 163, 182).
Aa
Black text reads best on this color (8.26:1).
About this color
#99A3B6 is a medium-light close to neutral grey. In OKLCH its lightness is 71%, its chroma 0.030. It has too little chroma to lean warm or cool. The nearest named color is Cool Steel (#97A7B3), ΔE 0.013 away. Black text reads best on it, at 8.26:1.
| Hue family | Neutrals |
| Lightness | medium-light (71%) |
| Chroma | close to neutral grey (0.030) |
| Temperature | neutral |
| Nearest name | Cool Steel (#97A7B3) |
| Black text | 8.26:1 |
| White text | 2.53:1 |
Values
| HEX | #99A3B6 |
| RGB | rgb(153, 163, 182) |
| HSL | hsl(219, 17%, 66%) |
| OKLCH | oklch(71.4% 0.03 263.4) |
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 #99A3B6 | 2.53:1 | Fails | Lc -54.9 | Large or bold text, headings |
| Black text on #99A3B6 | 8.26:1 | AAA | Lc 54.2 | Large or bold text, headings |
| #99A3B6 text on white | 2.53:1 | Fails | Lc 49.8 | Large or bold text, headings |
| #99A3B6 text on black | 8.26:1 | AAA | Lc -52.2 | 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
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E8EAED
oklch(93.6% 0.005 258.3)
-
Step 200
200
#D5D9E0
oklch(88.4% 0.011 261.8)
-
Step 300
300
#BAC1CD
oklch(80.9% 0.019 261.3)
-
Step 400
400 (this color)
#99A3B6
oklch(71.4% 0.03 263.4)
-
Step 500
500
#7D8AA1
oklch(63.1% 0.038 261.9)
-
Step 600
600
#67748C
oklch(55.7% 0.041 262.7)
-
Step 700
700
#556177
oklch(49.1% 0.038 262.5)
-
Step 800
800
#464F61
oklch(42.7% 0.032 264.1)
-
Step 900
900
#3B424F
oklch(37.8% 0.024 262.8)
-
Step 950
950
#22272E
oklch(27.1% 0.015 256.8)
#99A3B6 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) | #9DA4B7 | 0.006 |
| Deuteranopia (no green cones) | #9BA1B6 | 0.006 |
| Tritanopia (no blue cones) | #92A7A9 | 0.027 |
| Achromatopsia (no color) | #A2A2A2 | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99A3B6
#99A3B6
oklch(71.4% 0.03 263.4)
- #ACA18E
#ACA18E
oklch(71.3% 0.03 81.4)
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 #99A3B6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Steel #97A7B3 ΔE 0.013
- Cool Grey #95A3A6 ΔE 0.025
- Bluey Grey #89A0B0 ΔE 0.025
- Bluegrey #85A3B2 ΔE 0.027
- Cool Gray #8D99AE ΔE 0.034
- Dark Gray #A9A9A9 ΔE 0.037
- Pewter #96A8A1 ΔE 0.038
- Greyblue #77A1B5 ΔE 0.044
Use #99A3B6 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.