#91ACAB
Closest named color: Pewter (#96A8A1). oklch(72.4% 0.03 193.8), rgb(145, 172, 171).
Aa
Black text reads best on this color (8.69:1).
About this color
#91ACAB is a medium-light close to neutral grey. In OKLCH its lightness is 72%, its chroma 0.030. It has too little chroma to lean warm or cool. The nearest named color is Pewter (#96A8A1), ΔE 0.015 away. Black text reads best on it, at 8.69:1.
| Hue family | Neutrals |
| Lightness | medium-light (72%) |
| Chroma | close to neutral grey (0.030) |
| Temperature | neutral |
| Nearest name | Pewter (#96A8A1) |
| Black text | 8.69:1 |
| White text | 2.41:1 |
Values
| HEX | #91ACAB |
| RGB | rgb(145, 172, 171) |
| HSL | hsl(178, 14%, 62%) |
| OKLCH | oklch(72.4% 0.03 193.8) |
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 #91ACAB | 2.41:1 | Fails | Lc -52.6 | Large or bold text, headings |
| Black text on #91ACAB | 8.69:1 | AAA | Lc 56.4 | Large or bold text, headings |
| #91ACAB text on white | 2.41:1 | Fails | Lc 47.6 | Large or bold text, headings |
| #91ACAB text on black | 8.69:1 | AAA | Lc -54.4 | 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
#E6EBEB
oklch(93.6% 0.005 197.1)
-
Step 200
200
#D2DBDB
oklch(88.5% 0.01 197)
-
Step 300
300
#B4C5C4
oklch(81% 0.019 192.5)
-
Step 400
400 (this color)
#91ACAB
oklch(72.4% 0.03 193.8)
-
Step 500
500
#6F9190
oklch(63.1% 0.038 194)
-
Step 600
600
#577B7A
oklch(55.6% 0.041 193.9)
-
Step 700
700
#476867
oklch(49.2% 0.038 193.6)
-
Step 800
800
#3A5554
oklch(42.8% 0.032 193.1)
-
Step 900
900
#324645
oklch(37.7% 0.025 192.3)
-
Step 950
950
#1E2929
oklch(27.1% 0.015 196.3)
#91ACAB 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) | #A8A9AB | 0.031 |
| Deuteranopia (no green cones) | #A3A5AB | 0.029 |
| Tritanopia (no blue cones) | #89AEAC | 0.010 |
| Achromatopsia (no color) | #A7A7A7 | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91ACAB
#91ACAB
oklch(72.4% 0.03 193.8)
- #B89FA0
#B89FA0
oklch(72.5% 0.03 15.1)
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 #91ACAB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pewter #96A8A1 ΔE 0.015
- Cool Steel #97A7B3 ΔE 0.022
- Cool Grey #95A3A6 ΔE 0.024
- Dark Gray #A9A9A9 ΔE 0.032
- Bluegrey #85A3B2 ΔE 0.035
- Bluey Grey #89A0B0 ΔE 0.039
- Cement #A5A391 ΔE 0.042
- Muted Teal #90B494 ΔE 0.046
Use #91ACAB 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.