#91B3DF
Closest named color: Light Grey Blue (#9DBCD4). oklch(75.8% 0.074 255.1), rgb(145, 179, 223).
Aa
Black text reads best on this color (9.71:1).
About this color
#91B3DF is a medium-light, moderately saturated blue. In OKLCH its lightness is 76%, its chroma 0.074 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Light Grey Blue (#9DBCD4), ΔE 0.037 away. Black text reads best on it, at 9.71:1.
| Hue family | Blues |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 9.71:1 |
| White text | 2.16:1 |
Values
| HEX | #91B3DF |
| RGB | rgb(145, 179, 223) |
| HSL | hsl(214, 55%, 72%) |
| OKLCH | oklch(75.8% 0.074 255.1) |
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 #91B3DF | 2.16:1 | Fails | Lc -47.1 | Large or bold text, headings |
| Black text on #91B3DF | 9.71:1 | AAA | Lc 61.5 | Content text, not long reading |
| #91B3DF text on white | 2.16:1 | Fails | Lc 42.4 | Non-text elements, placeholder text |
| #91B3DF text on black | 9.71:1 | AAA | Lc -59.8 | 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF3
oklch(93.5% 0.014 258.3)
-
Step 200
200
#CEDAEA
oklch(88.4% 0.026 255.6)
-
Step 300
300
#ADC3DF
oklch(81% 0.046 254.5)
-
Step 400
400 (this color)
#91B3DF
oklch(75.8% 0.074 255.1)
-
Step 500
500
#628CC2
oklch(63.2% 0.094 255.1)
-
Step 600
600
#4875AE
oklch(55.6% 0.102 255)
-
Step 700
700
#396296
oklch(49.1% 0.096 255.1)
-
Step 800
800
#305079
oklch(42.6% 0.078 255.2)
-
Step 900
900
#2A4362
oklch(37.8% 0.062 254.4)
-
Step 950
950
#192739
oklch(26.9% 0.039 255.1)
#91B3DF 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) | #A3B5E1 | 0.024 |
| Deuteranopia (no green cones) | #9AADDE | 0.018 |
| Tritanopia (no blue cones) | #78BDC2 | 0.065 |
| Achromatopsia (no color) | #B0B0B0 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91B3DF
#91B3DF
oklch(75.8% 0.074 255.1)
- #CCAA7B
#CCAA7B
oklch(75.7% 0.074 75.3)
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 #91B3DF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Grey Blue #9DBCD4 ΔE 0.037
- Carolina Blue #8AB8FE ΔE 0.044
- Light Cornflower Blue #98C1D9 ΔE 0.044
- Pastel Blue #A2BFFE ΔE 0.055
- Lightblue #7BC8F6 ΔE 0.058
- Cloudy Blue #ACC2D9 ΔE 0.058
- French Gray #ADB5BD ΔE 0.061
- Cool Steel #97A7B3 ΔE 0.063
Use #91B3DF 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.