#91AAAD
Closest named color: Cool Steel (#97A7B3). oklch(72% 0.028 205.4), rgb(145, 170, 173).
Aa
Black text reads best on this color (8.55:1).
About this color
#91AAAD is a medium-light close to neutral grey. In OKLCH its lightness is 72%, its chroma 0.028. It has too little chroma to lean warm or cool. The nearest named color is Cool Steel (#97A7B3), ΔE 0.016 away. Black text reads best on it, at 8.55:1.
| Hue family | Neutrals |
| Lightness | medium-light (72%) |
| Chroma | close to neutral grey (0.028) |
| Temperature | neutral |
| Nearest name | Cool Steel (#97A7B3) |
| Black text | 8.55:1 |
| White text | 2.45:1 |
Values
| HEX | #91AAAD |
| RGB | rgb(145, 170, 173) |
| HSL | hsl(186, 15%, 62%) |
| OKLCH | oklch(72% 0.028 205.4) |
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 #91AAAD | 2.45:1 | Fails | Lc -53.3 | Large or bold text, headings |
| Black text on #91AAAD | 8.55:1 | AAA | Lc 55.7 | Large or bold text, headings |
| #91AAAD text on white | 2.45:1 | Fails | Lc 48.3 | Large or bold text, headings |
| #91AAAD text on black | 8.55:1 | AAA | Lc -53.7 | 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
#D2DBDC
oklch(88.5% 0.01 204.9)
-
Step 300
300
#B4C4C6
oklch(80.9% 0.018 205.8)
-
Step 400
400 (this color)
#91AAAD
oklch(72% 0.028 205.4)
-
Step 500
500
#709094
oklch(63% 0.036 205.7)
-
Step 600
600
#587A7E
oklch(55.5% 0.039 205.2)
-
Step 700
700
#48676B
oklch(49.1% 0.037 206.1)
-
Step 800
800
#3B5457
oklch(42.7% 0.031 205.4)
-
Step 900
900
#334548
oklch(37.6% 0.023 208.8)
-
Step 950
950
#1E292A
oklch(27.1% 0.015 203.2)
#91AAAD 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) | #A6A8AD | 0.028 |
| Deuteranopia (no green cones) | #A1A4AD | 0.026 |
| Tritanopia (no blue cones) | #89ACAB | 0.012 |
| Achromatopsia (no color) | #A5A5A5 | 0.028 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91AAAD
#91AAAD
oklch(72% 0.028 205.4)
- #B69E9C
#B69E9C
oklch(72% 0.029 23.5)
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 #91AAAD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Steel #97A7B3 ΔE 0.016
- Pewter #96A8A1 ΔE 0.017
- Cool Grey #95A3A6 ΔE 0.019
- Bluegrey #85A3B2 ΔE 0.029
- Dark Gray #A9A9A9 ΔE 0.032
- Bluey Grey #89A0B0 ΔE 0.033
- Cement #A5A391 ΔE 0.043
- Greyblue #77A1B5 ΔE 0.046
Use #91AAAD 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.