#91BBBF
Closest named color: Light Grey Blue (#9DBCD4). oklch(76.3% 0.045 203.5), rgb(145, 187, 191).
Aa
Black text reads best on this color (10.06:1).
About this color
#91BBBF is a medium-light, muted teal or cyan. In OKLCH its lightness is 76%, its chroma 0.045 and its hue 203°. 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 10.06:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (76%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 10.06:1 |
| White text | 2.08:1 |
Values
| HEX | #91BBBF |
| RGB | rgb(145, 187, 191) |
| HSL | hsl(185, 26%, 66%) |
| OKLCH | oklch(76.3% 0.045 203.5) |
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 #91BBBF | 2.08:1 | Fails | Lc -45.4 | Large or bold text, headings |
| Black text on #91BBBF | 10.06:1 | AAA | Lc 63.2 | Content text, not long reading |
| #91BBBF text on white | 2.08:1 | Fails | Lc 40.8 | Non-text elements, placeholder text |
| #91BBBF text on black | 10.06:1 | AAA | Lc -61.5 | 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
#E0EDEE
oklch(93.7% 0.014 202.5)
-
Step 200
200
#C7DEE1
oklch(88.4% 0.025 206.2)
-
Step 300
300 (this color)
#91BBBF
oklch(76.3% 0.045 203.5)
-
Step 400
400
#67AEB5
oklch(70.7% 0.072 203.8)
-
Step 500
500
#339AA3
oklch(63.2% 0.093 203.5)
-
Step 600
600
#00838C
oklch(55.6% 0.095 203.3)
-
Step 700
700
#006E76
oklch(49.1% 0.084 203.6)
-
Step 800
800
#005A61
oklch(42.6% 0.073 204)
-
Step 900
900
#0B4B50
oklch(37.8% 0.06 203.1)
-
Step 950
950
#0B2C2F
oklch(27.1% 0.038 203.6)
#91BBBF 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) | #B5B7BF | 0.046 |
| Deuteranopia (no green cones) | #ACB1BF | 0.042 |
| Tritanopia (no blue cones) | #82BEBC | 0.019 |
| Achromatopsia (no color) | #B3B3B3 | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91BBBF
#91BBBF
oklch(76.3% 0.045 203.5)
- #CEA7A4
#CEA7A4
oklch(76.3% 0.046 23.4)
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 #91BBBF, 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 0.037
- Light Cornflower Blue #98C1D9 ΔE 0.039
- Cool Steel #97A7B3 ΔE 0.052
- Dark Gray #A9A9A9 ΔE 0.053
- Cloudy Blue #ACC2D9 ΔE 0.054
- Pale Teal #82CBB2 ΔE 0.056
- Pewter #96A8A1 ΔE 0.056
Use #91BBBF 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.