#91B3DB
Closest named color: Light Grey Blue (#9DBCD4). oklch(75.6% 0.069 252.8), rgb(145, 179, 219).
Aa
Black text reads best on this color (9.67:1).
About this color
#91B3DB is a medium-light, muted blue. In OKLCH its lightness is 76%, its chroma 0.069 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Light Grey Blue (#9DBCD4), ΔE 0.034 away. Black text reads best on it, at 9.67:1.
| Hue family | Blues |
| Lightness | medium-light (76%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 9.67:1 |
| White text | 2.17:1 |
Values
| HEX | #91B3DB |
| RGB | rgb(145, 179, 219) |
| HSL | hsl(212, 51%, 71%) |
| OKLCH | oklch(75.6% 0.069 252.8) |
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 #91B3DB | 2.17:1 | Fails | Lc -47.4 | Large or bold text, headings |
| Black text on #91B3DB | 9.67:1 | AAA | Lc 61.3 | Content text, not long reading |
| #91B3DB text on white | 2.17:1 | Fails | Lc 42.6 | Non-text elements, placeholder text |
| #91B3DB text on black | 9.67:1 | AAA | Lc -59.6 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF2
oklch(93.7% 0.012 248)
-
Step 200
200
#CEDAE9
oklch(88.4% 0.024 254)
-
Step 300
300
#ADC3DC
oklch(80.9% 0.043 251.7)
-
Step 400
400 (this color)
#91B3DB
oklch(75.6% 0.069 252.8)
-
Step 500
500
#628DBE
oklch(63.2% 0.088 252.4)
-
Step 600
600
#4976AA
oklch(55.6% 0.095 253)
-
Step 700
700
#3A6392
oklch(49.2% 0.089 253)
-
Step 800
800
#305176
oklch(42.7% 0.073 252.4)
-
Step 900
900
#2B435F
oklch(37.6% 0.057 253)
-
Step 950
950
#192738
oklch(26.9% 0.037 253.8)
#91B3DB 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) | #A4B4DD | 0.025 |
| Deuteranopia (no green cones) | #9CADDA | 0.020 |
| Tritanopia (no blue cones) | #7ABCC0 | 0.060 |
| Achromatopsia (no color) | #B0B0B0 | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91B3DB
#91B3DB
oklch(75.6% 0.069 252.8)
- #CBA97F
#CBA97F
oklch(75.5% 0.069 72.4)
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 #91B3DB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Grey Blue #9DBCD4 ΔE 0.034
- Light Cornflower Blue #98C1D9 ΔE 0.041
- Carolina Blue #8AB8FE ΔE 0.049
- French Gray #ADB5BD ΔE 0.056
- Cloudy Blue #ACC2D9 ΔE 0.057
- Cool Steel #97A7B3 ΔE 0.057
- Lightblue #7BC8F6 ΔE 0.059
- Pastel Blue #A2BFFE ΔE 0.059
Use #91B3DB 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.