#90A1FF
Closest named color: Periwinkle Blue (#8F99FB). oklch(73.5% 0.137 274.7), rgb(144, 161, 255).
Aa
Black text reads best on this color (8.72:1).
About this color
#90A1FF is a medium-light, moderately saturated blue. In OKLCH its lightness is 73%, its chroma 0.137 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.020 away. Black text reads best on it, at 8.72:1.
| Hue family | Blues |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.137) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 8.72:1 |
| White text | 2.40:1 |
Values
| HEX | #90A1FF |
| RGB | rgb(144, 161, 255) |
| HSL | hsl(231, 100%, 78%) |
| OKLCH | oklch(73.5% 0.137 274.7) |
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 #90A1FF | 2.40:1 | Fails | Lc -52.3 | Large or bold text, headings |
| Black text on #90A1FF | 8.72:1 | AAA | Lc 56.7 | Large or bold text, headings |
| #90A1FF text on white | 2.40:1 | Fails | Lc 47.3 | Large or bold text, headings |
| #90A1FF text on black | 8.72:1 | AAA | Lc -54.7 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9FB
oklch(93.6% 0.025 275.9)
-
Step 200
200
#CFD7F9
oklch(88.4% 0.048 274.9)
-
Step 300
300
#B0BDF9
oklch(81% 0.086 274.8)
-
Step 400
400 (this color)
#90A1FF
oklch(73.5% 0.137 274.7)
-
Step 500
500
#6C7BF1
oklch(62.9% 0.176 274.7)
-
Step 600
600
#5761E0
oklch(55.6% 0.191 274.9)
-
Step 700
700
#474FC3
oklch(49% 0.178 274.7)
-
Step 800
800
#3A429D
oklch(42.7% 0.146 274.6)
-
Step 900
900
#31397D
oklch(37.7% 0.114 274.5)
-
Step 950
950
#1D2249
oklch(27% 0.072 275)
#90A1FF 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) | #7FACFF | 0.033 |
| Deuteranopia (no green cones) | #76A3FD | 0.031 |
| Tritanopia (no blue cones) | #6AB4C4 | 0.122 |
| Achromatopsia (no color) | #A7A7A7 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90A1FF
#90A1FF
oklch(73.5% 0.137 274.7)
- #C5A72D
#C5A72D
oklch(73.5% 0.137 94.4)
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 #90A1FF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.020
- Perrywinkle #8F8CE7 ΔE 0.058
- Carolina Blue #8AB8FE ΔE 0.060
- Lavender Blue #8B88F8 ΔE 0.063
- Cornflower Blue #6495ED ΔE 0.069
- Periwinkle #8E82FE ΔE 0.078
- Pastel Purple #CAA0FF ΔE 0.082
- Pale Purple #B790D4 ΔE 0.082
Use #90A1FF 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.