#91BBDD
Closest named color: Light Grey Blue (#9DBCD4). oklch(77.4% 0.066 243.1), rgb(145, 187, 221).
Aa
Black text reads best on this color (10.35:1).
About this color
#91BBDD is a medium-light, muted blue. In OKLCH its lightness is 77%, its chroma 0.066 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Light Grey Blue (#9DBCD4), ΔE 0.019 away. Black text reads best on it, at 10.35:1.
| Hue family | Blues |
| Lightness | medium-light (77%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 10.35:1 |
| White text | 2.02:1 |
Values
| HEX | #91BBDD |
| RGB | rgb(145, 187, 221) |
| HSL | hsl(207, 53%, 72%) |
| OKLCH | oklch(77.4% 0.066 243.1) |
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 #91BBDD | 2.02:1 | Fails | Lc -43.9 | Non-text elements, placeholder text |
| Black text on #91BBDD | 10.35:1 | AAA | Lc 64.6 | Content text, not long reading |
| #91BBDD text on white | 2.02:1 | Fails | Lc 39.4 | Non-text elements, placeholder text |
| #91BBDD text on black | 10.35:1 | AAA | Lc -63.0 | 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
#DFECF6
oklch(93.6% 0.019 240.7)
-
Step 200
200
#C5DDF0
oklch(88.6% 0.037 241.8)
-
Step 300
300 (this color)
#91BBDD
oklch(77.4% 0.066 243.1)
-
Step 400
400
#62A8DE
oklch(70.7% 0.106 243.4)
-
Step 500
500
#2B91D4
oklch(63.1% 0.135 242.9)
-
Step 600
600
#007ABB
oklch(55.7% 0.134 242.9)
-
Step 700
700
#00669E
oklch(49% 0.119 243.2)
-
Step 800
800
#005483
oklch(42.8% 0.104 243)
-
Step 900
900
#05456C
oklch(37.5% 0.088 243.4)
-
Step 950
950
#08293F
oklch(27% 0.055 242.5)
#91BBDD 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) | #ADBBDF | 0.035 |
| Deuteranopia (no green cones) | #A3B2DC | 0.031 |
| Tritanopia (no blue cones) | #78C3C6 | 0.054 |
| Achromatopsia (no color) | #B6B6B6 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91BBDD
#91BBDD
oklch(77.4% 0.066 243.1)
- #D4AD8A
#D4AD8A
oklch(77.4% 0.066 63.5)
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 #91BBDD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Grey Blue #9DBCD4 ΔE 0.019
- Light Cornflower Blue #98C1D9 ΔE 0.021
- Cloudy Blue #ACC2D9 ΔE 0.041
- Lightblue #7BC8F6 ΔE 0.044
- Light Steel Blue #B0C4DE ΔE 0.048
- Sky Blue #87CEEB ΔE 0.049
- Sky #82CAFC ΔE 0.051
- Carolina Blue #8AB8FE ΔE 0.052
Use #91BBDD 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.