#91BBDF
Closest named color: Light Grey Blue (#9DBCD4). oklch(77.5% 0.069 244.7), rgb(145, 187, 223).
Aa
Black text reads best on this color (10.37:1).
About this color
#91BBDF is a medium-light, muted blue. In OKLCH its lightness is 77%, its chroma 0.069 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Light Grey Blue (#9DBCD4), ΔE 0.021 away. Black text reads best on it, at 10.37:1.
| Hue family | Blues |
| Lightness | medium-light (77%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 10.37:1 |
| White text | 2.02:1 |
Values
| HEX | #91BBDF |
| RGB | rgb(145, 187, 223) |
| HSL | hsl(208, 55%, 72%) |
| OKLCH | oklch(77.5% 0.069 244.7) |
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 #91BBDF | 2.02:1 | Fails | Lc -43.8 | Non-text elements, placeholder text |
| Black text on #91BBDF | 10.37:1 | AAA | Lc 64.7 | Content text, not long reading |
| #91BBDF text on white | 2.02:1 | Fails | Lc 39.3 | Non-text elements, placeholder text |
| #91BBDF text on black | 10.37:1 | AAA | Lc -63.1 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#DFECF7
oklch(93.7% 0.02 243.4)
-
Step 200
200
#C5DCF1
oklch(88.4% 0.038 245.8)
-
Step 300
300 (this color)
#91BBDF
oklch(77.5% 0.069 244.7)
-
Step 400
400
#61A7E0
oklch(70.6% 0.11 244.8)
-
Step 500
500
#2B90D8
oklch(63.1% 0.141 244.9)
-
Step 600
600
#0079BE
oklch(55.6% 0.139 244.6)
-
Step 700
700
#0066A1
oklch(49.2% 0.123 244.5)
-
Step 800
800
#005385
oklch(42.7% 0.107 244.8)
-
Step 900
900
#05456E
oklch(37.7% 0.091 244.7)
-
Step 950
950
#082941
oklch(27.1% 0.058 244.7)
#91BBDF 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) | #ACBBE1 | 0.034 |
| Deuteranopia (no green cones) | #A2B3DE | 0.028 |
| Tritanopia (no blue cones) | #77C4C7 | 0.057 |
| Achromatopsia (no color) | #B6B6B6 | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91BBDF
#91BBDF
oklch(77.5% 0.069 244.7)
- #D5AD88
#D5AD88
oklch(77.4% 0.068 64.3)
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 #91BBDF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Grey Blue #9DBCD4 ΔE 0.021
- Light Cornflower Blue #98C1D9 ΔE 0.023
- Cloudy Blue #ACC2D9 ΔE 0.042
- Lightblue #7BC8F6 ΔE 0.043
- Light Steel Blue #B0C4DE ΔE 0.048
- Carolina Blue #8AB8FE ΔE 0.049
- Sky #82CAFC ΔE 0.049
- Sky Blue #87CEEB ΔE 0.049
Use #91BBDF 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.