#91BCDB
Closest named color: Light Grey Blue (#9DBCD4). oklch(77.5% 0.064 240), rgb(145, 188, 219).
Aa
Black text reads best on this color (10.42:1).
About this color
#91BCDB is a medium-light, muted blue. In OKLCH its lightness is 78%, its chroma 0.064 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Light Grey Blue (#9DBCD4), ΔE 0.017 away. Black text reads best on it, at 10.42:1.
| Hue family | Blues |
| Lightness | medium-light (78%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 10.42:1 |
| White text | 2.01:1 |
Values
| HEX | #91BCDB |
| RGB | rgb(145, 188, 219) |
| HSL | hsl(205, 51%, 71%) |
| OKLCH | oklch(77.5% 0.064 240) |
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 #91BCDB | 2.01:1 | Fails | Lc -43.6 | Non-text elements, placeholder text |
| Black text on #91BCDB | 10.42:1 | AAA | Lc 64.9 | Content text, not long reading |
| #91BCDB text on white | 2.01:1 | Fails | Lc 39.1 | Non-text elements, placeholder text |
| #91BCDB text on black | 10.42:1 | AAA | Lc -63.3 | 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
#DFECF5
oklch(93.6% 0.018 237.8)
-
Step 200
200
#C5DDEF
oklch(88.5% 0.036 240.3)
-
Step 300
300 (this color)
#91BCDB
oklch(77.5% 0.064 240)
-
Step 400
400
#61A9DA
oklch(70.7% 0.102 240.1)
-
Step 500
500
#2892D0
oklch(63.1% 0.131 240.2)
-
Step 600
600
#007BB6
oklch(55.6% 0.128 240.2)
-
Step 700
700
#006799
oklch(49% 0.112 240)
-
Step 800
800
#00557F
oklch(42.8% 0.098 239.8)
-
Step 900
900
#02466A
oklch(37.6% 0.086 240.5)
-
Step 950
950
#07293E
oklch(26.9% 0.055 240.7)
#91BCDB 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) | #AFBBDD | 0.037 |
| Deuteranopia (no green cones) | #A5B3DA | 0.032 |
| Tritanopia (no blue cones) | #79C4C6 | 0.051 |
| Achromatopsia (no color) | #B7B7B7 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91BCDB
#91BCDB
oklch(77.5% 0.064 240)
- #D5AD8D
#D5AD8D
oklch(77.6% 0.064 60.3)
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 #91BCDB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Grey Blue #9DBCD4 ΔE 0.017
- Light Cornflower Blue #98C1D9 ΔE 0.018
- Cloudy Blue #ACC2D9 ΔE 0.039
- Lightblue #7BC8F6 ΔE 0.045
- Light Steel Blue #B0C4DE ΔE 0.046
- Sky Blue #87CEEB ΔE 0.047
- French Gray #ADB5BD ΔE 0.050
- Sky #82CAFC ΔE 0.051
Use #91BCDB 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.