#91B1BB
Closest named color: Cool Steel (#97A7B3). oklch(74% 0.038 218.7), rgb(145, 177, 187).
Aa
Black text reads best on this color (9.21:1).
About this color
#91B1BB is a medium-light, muted teal or cyan. In OKLCH its lightness is 74%, its chroma 0.038 and its hue 219°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Steel (#97A7B3), ΔE 0.026 away. Black text reads best on it, at 9.21:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (74%) |
| Chroma | muted (0.038) |
| Temperature | cool |
| Nearest name | Cool Steel (#97A7B3) |
| Black text | 9.21:1 |
| White text | 2.28:1 |
Values
| HEX | #91B1BB |
| RGB | rgb(145, 177, 187) |
| HSL | hsl(194, 24%, 65%) |
| OKLCH | oklch(74% 0.038 218.7) |
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 #91B1BB | 2.28:1 | Fails | Lc -49.8 | Large or bold text, headings |
| Black text on #91B1BB | 9.21:1 | AAA | Lc 59.0 | Large or bold text, headings |
| #91B1BB text on white | 2.28:1 | Fails | Lc 45.0 | Non-text elements, placeholder text |
| #91B1BB text on black | 9.21:1 | AAA | Lc -57.2 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E5EBED
oklch(93.6% 0.007 219.6)
-
Step 200
200
#D0DBDF
oklch(88.4% 0.013 221.4)
-
Step 300
300
#B1C5CB
oklch(81% 0.023 217.7)
-
Step 400
400 (this color)
#91B1BB
oklch(74% 0.038 218.7)
-
Step 500
500
#68919D
oklch(63.1% 0.048 217.9)
-
Step 600
600
#4F7B88
oklch(55.6% 0.052 218.4)
-
Step 700
700
#406873
oklch(49.2% 0.048 217.1)
-
Step 800
800
#35545E
oklch(42.6% 0.04 220.3)
-
Step 900
900
#2E464D
oklch(37.7% 0.032 218)
-
Step 950
950
#1B292D
oklch(27% 0.02 217.4)
#91B1BB 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 | 0.033 |
| Deuteranopia (no green cones) | #A4A9BB | 0.031 |
| Tritanopia (no blue cones) | #85B5B4 | 0.023 |
| Achromatopsia (no color) | #ACACAC | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91B1BB
#91B1BB
oklch(74% 0.038 218.7)
- #C1A39A
#C1A39A
oklch(74% 0.038 37.3)
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 #91B1BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Steel #97A7B3 ΔE 0.026
- Pewter #96A8A1 ΔE 0.037
- Dark Gray #A9A9A9 ΔE 0.038
- French Gray #ADB5BD ΔE 0.039
- Cool Grey #95A3A6 ΔE 0.041
- Bluegrey #85A3B2 ΔE 0.043
- Light Grey Blue #9DBCD4 ΔE 0.045
- Bluey Grey #89A0B0 ΔE 0.048
Use #91B1BB 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.