#91A4DD
Closest named color: Periwinkle Blue (#8F99FB). oklch(72.5% 0.086 270), rgb(145, 164, 221).
Aa
Black text reads best on this color (8.55:1).
About this color
#91A4DD is a medium-light, moderately saturated blue. In OKLCH its lightness is 73%, its chroma 0.086 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.059 away. Black text reads best on it, at 8.55:1.
| Hue family | Blues |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 8.55:1 |
| White text | 2.45:1 |
Values
| HEX | #91A4DD |
| RGB | rgb(145, 164, 221) |
| HSL | hsl(225, 53%, 72%) |
| OKLCH | oklch(72.5% 0.086 270) |
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 #91A4DD | 2.45:1 | Fails | Lc -53.3 | Large or bold text, headings |
| Black text on #91A4DD | 8.55:1 | AAA | Lc 55.8 | Large or bold text, headings |
| #91A4DD text on white | 2.45:1 | Fails | Lc 48.2 | Large or bold text, headings |
| #91A4DD text on black | 8.55:1 | AAA | Lc -53.8 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E6EAF5
oklch(93.7% 0.015 270)
-
Step 200
200
#D1D9EE
oklch(88.6% 0.03 269.1)
-
Step 300
300
#B3C0E4
oklch(81% 0.053 269.6)
-
Step 400
400 (this color)
#91A4DD
oklch(72.5% 0.086 270)
-
Step 500
500
#6F85CC
oklch(63% 0.11 269.9)
-
Step 600
600
#586EB9
oklch(55.6% 0.119 269.9)
-
Step 700
700
#485C9F
oklch(49.1% 0.11 269.5)
-
Step 800
800
#3B4B81
oklch(42.6% 0.092 269.7)
-
Step 900
900
#333F68
oklch(37.7% 0.072 270.3)
-
Step 950
950
#1E253D
oklch(27% 0.046 270.7)
#91A4DD 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) | #92A9E0 | 0.013 |
| Deuteranopia (no green cones) | #8BA2DC | 0.010 |
| Tritanopia (no blue cones) | #7BAFB8 | 0.076 |
| Achromatopsia (no color) | #A5A5A5 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91A4DD
#91A4DD
oklch(72.5% 0.086 270)
- #BBA466
#BBA466
oklch(72.5% 0.085 89.8)
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 #91A4DD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.059
- Carolina Blue #8AB8FE ΔE 0.061
- Cool Steel #97A7B3 ΔE 0.066
- Bluegrey #85A3B2 ΔE 0.067
- Bluey Grey #89A0B0 ΔE 0.067
- Pale Purple #B790D4 ΔE 0.069
- Cool Gray #8D99AE ΔE 0.069
- Perrywinkle #8F8CE7 ΔE 0.069
Use #91A4DD 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.