#91B8BF
Closest named color: Light Grey Blue (#9DBCD4). oklch(75.7% 0.043 209.7), rgb(145, 184, 191).
Aa
Black text reads best on this color (9.81:1).
About this color
#91B8BF is a medium-light, muted teal or cyan. In OKLCH its lightness is 76%, its chroma 0.043 and its hue 210°. 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 9.81:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (76%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 9.81:1 |
| White text | 2.14:1 |
Values
| HEX | #91B8BF |
| RGB | rgb(145, 184, 191) |
| HSL | hsl(189, 26%, 66%) |
| OKLCH | oklch(75.7% 0.043 209.7) |
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 #91B8BF | 2.14:1 | Fails | Lc -46.7 | Large or bold text, headings |
| Black text on #91B8BF | 9.81:1 | AAA | Lc 62.0 | Content text, not long reading |
| #91B8BF text on white | 2.14:1 | Fails | Lc 42.0 | Non-text elements, placeholder text |
| #91B8BF text on black | 9.81:1 | AAA | Lc -60.2 | 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 400.
-
Step 50
50
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E4EBED
oklch(93.5% 0.008 216.6)
-
Step 200
200
#CFDCDE
oklch(88.5% 0.014 207.9)
-
Step 300
300
#AEC6CA
oklch(81% 0.027 208.7)
-
Step 400
400 (this color)
#91B8BF
oklch(75.7% 0.043 209.7)
-
Step 500
500
#61939C
oklch(63.1% 0.055 210)
-
Step 600
600
#467D87
oklch(55.6% 0.06 210.5)
-
Step 700
700
#376972
oklch(49% 0.056 210.5)
-
Step 800
800
#2F565D
oklch(42.7% 0.046 210.3)
-
Step 900
900
#2A474C
oklch(37.7% 0.036 209.6)
-
Step 950
950
#192A2D
oklch(27.1% 0.023 209.7)
#91B8BF 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) | #B1B5BF | 0.041 |
| Deuteranopia (no green cones) | #A9AFBF | 0.037 |
| Tritanopia (no blue cones) | #83BCBA | 0.022 |
| Achromatopsia (no color) | #B1B1B1 | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91B8BF
#91B8BF
oklch(75.7% 0.043 209.7)
- #CAA6A0
#CAA6A0
oklch(75.6% 0.043 29.2)
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 #91B8BF, 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 0.041
- Cool Steel #97A7B3 ΔE 0.044
- Dark Gray #A9A9A9 ΔE 0.048
- Pewter #96A8A1 ΔE 0.050
- Cloudy Blue #ACC2D9 ΔE 0.056
- Cool Grey #95A3A6 ΔE 0.058
Use #91B8BF 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.