#91A3DB
Closest named color: Periwinkle Blue (#8F99FB). oklch(72.2% 0.084 270.4), rgb(145, 163, 219).
Aa
Black text reads best on this color (8.46:1).
About this color
#91A3DB is a medium-light, moderately saturated blue. In OKLCH its lightness is 72%, its chroma 0.084 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.060 away. Black text reads best on it, at 8.46:1.
| Hue family | Blues |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 8.46:1 |
| White text | 2.48:1 |
Values
| HEX | #91A3DB |
| RGB | rgb(145, 163, 219) |
| HSL | hsl(225, 51%, 71%) |
| OKLCH | oklch(72.2% 0.084 270.4) |
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 #91A3DB | 2.48:1 | Fails | Lc -53.8 | Large or bold text, headings |
| Black text on #91A3DB | 8.46:1 | AAA | Lc 55.3 | Large or bold text, headings |
| #91A3DB text on white | 2.48:1 | Fails | Lc 48.7 | Large or bold text, headings |
| #91A3DB text on black | 8.46:1 | AAA | Lc -53.3 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E6EAF4
oklch(93.7% 0.014 268.5)
-
Step 200
200
#D1D9ED
oklch(88.5% 0.029 268.3)
-
Step 300
300
#B3C0E4
oklch(81% 0.053 269.6)
-
Step 400
400 (this color)
#91A3DB
oklch(72.2% 0.084 270.4)
-
Step 500
500
#7185CB
oklch(63.1% 0.108 270.9)
-
Step 600
600
#596EB8
oklch(55.6% 0.118 270.3)
-
Step 700
700
#495C9E
oklch(49.1% 0.108 270)
-
Step 800
800
#3C4B80
oklch(42.6% 0.09 270.3)
-
Step 900
900
#333F67
oklch(37.7% 0.07 270.1)
-
Step 950
950
#1E253C
oklch(27% 0.044 270.3)
#91A3DB 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) | #91A8DD | 0.013 |
| Deuteranopia (no green cones) | #8BA2DA | 0.009 |
| Tritanopia (no blue cones) | #7CAEB6 | 0.076 |
| Achromatopsia (no color) | #A4A4A4 | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91A3DB
#91A3DB
oklch(72.2% 0.084 270.4)
- #B9A466
#B9A466
oklch(72.3% 0.085 91.4)
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 #91A3DB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.060
- Cool Steel #97A7B3 ΔE 0.064
- Bluey Grey #89A0B0 ΔE 0.065
- Carolina Blue #8AB8FE ΔE 0.065
- Bluegrey #85A3B2 ΔE 0.065
- Cool Gray #8D99AE ΔE 0.066
- Greyblue #77A1B5 ΔE 0.068
- Pale Purple #B790D4 ΔE 0.068
Use #91A3DB 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.