#91B9BF
Closest named color: Light Grey Blue (#9DBCD4). oklch(75.9% 0.044 207.6), rgb(145, 185, 191).
Aa
Black text reads best on this color (9.89:1).
About this color
#91B9BF is a medium-light, muted teal or cyan. In OKLCH its lightness is 76%, its chroma 0.044 and its hue 208°. Its hue sits on the cool side of the wheel. The nearest named color is Light Grey Blue (#9DBCD4), ΔE 0.035 away. Black text reads best on it, at 9.89:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (76%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 9.89:1 |
| White text | 2.12:1 |
Values
| HEX | #91B9BF |
| RGB | rgb(145, 185, 191) |
| HSL | hsl(188, 26%, 66%) |
| OKLCH | oklch(75.9% 0.044 207.6) |
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 #91B9BF | 2.12:1 | Fails | Lc -46.2 | Large or bold text, headings |
| Black text on #91B9BF | 9.89:1 | AAA | Lc 62.4 | Content text, not long reading |
| #91B9BF text on white | 2.12:1 | Fails | Lc 41.6 | Non-text elements, placeholder text |
| #91B9BF text on black | 9.89:1 | AAA | Lc -60.7 | Content text, not long reading |
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 300.
-
Step 50
50
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#E1ECEE
oklch(93.5% 0.012 209.8)
-
Step 200
200
#C8DEE1
oklch(88.5% 0.024 206.6)
-
Step 300
300 (this color)
#91B9BF
oklch(75.9% 0.044 207.6)
-
Step 400
400
#6AADB7
oklch(70.7% 0.07 207.8)
-
Step 500
500
#3A98A5
oklch(63% 0.089 207.9)
-
Step 600
600
#008290
oklch(55.5% 0.095 208)
-
Step 700
700
#006E79
oklch(49.2% 0.084 206.9)
-
Step 800
800
#005A64
oklch(42.8% 0.073 207.9)
-
Step 900
900
#104A51
oklch(37.7% 0.058 207)
-
Step 950
950
#0C2B30
oklch(26.9% 0.037 209.8)
#91B9BF 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) | #B2B6BF | 0.042 |
| Deuteranopia (no green cones) | #AAAFBF | 0.040 |
| Tritanopia (no blue cones) | #83BDBB | 0.021 |
| Achromatopsia (no color) | #B2B2B2 | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91B9BF
#91B9BF
oklch(75.9% 0.044 207.6)
- #CBA7A2
#CBA7A2
oklch(75.9% 0.043 27.4)
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 #91B9BF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Grey Blue #9DBCD4 ΔE 0.035
- French Gray #ADB5BD ΔE 0.035
- Light Cornflower Blue #98C1D9 ΔE 0.040
- Cool Steel #97A7B3 ΔE 0.047
- Dark Gray #A9A9A9 ΔE 0.050
- Pewter #96A8A1 ΔE 0.052
- Cloudy Blue #ACC2D9 ΔE 0.055
- Muted Teal #90B494 ΔE 0.059
Use #91B9BF 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.