#491DFF
Closest named color: Light Royal Blue (#3A2EFE). oklch(49.1% 0.29 275.9), rgb(73, 29, 255).
Aa
White text reads best on this color (7.23:1).
About this color
#491DFF is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.290 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Light Royal Blue (#3A2EFE), ΔE 0.023 away. White text reads best on it, at 7.23:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.290) |
| Temperature | cool |
| Nearest name | Light Royal Blue (#3A2EFE) |
| Black text | 2.90:1 |
| White text | 7.23:1 |
Values
| HEX | #491DFF |
| RGB | rgb(73, 29, 255) |
| HSL | hsl(252, 100%, 56%) |
| OKLCH | oklch(49.1% 0.29 275.9) |
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 #491DFF | 7.23:1 | AAA | Lc -88.1 | Fine for body text |
| Black text on #491DFF | 2.90:1 | Fails | Lc 21.0 | Dividers and decoration only |
| #491DFF text on white | 7.23:1 | AAA | Lc 83.0 | Fine for body text |
| #491DFF text on black | 2.90:1 | Fails | Lc -18.9 | Dividers and decoration only |
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 700.
-
Step 50
50
#F3F5FF
oklch(97.2% 0.013 277.1)
-
Step 100
100
#E4E9FF
oklch(93.7% 0.03 275.6)
-
Step 200
200
#CED7FF
oklch(88.5% 0.056 275.2)
-
Step 300
300
#AFBCFF
oklch(80.9% 0.096 275.6)
-
Step 400
400
#8796FF
oklch(70.7% 0.154 275.6)
-
Step 500
500
#6C77FF
oklch(63.2% 0.199 275.6)
-
Step 600
600
#5652FF
oklch(55.6% 0.247 275.8)
-
Step 700
700 (this color)
#491DFF
oklch(49.1% 0.29 275.9)
-
Step 800
800
#3A20CE
oklch(42.7% 0.241 275.7)
-
Step 900
900
#2F26A1
oklch(37.6% 0.187 275.7)
-
Step 950
950
#1B195E
oklch(27% 0.118 276.2)
#491DFF 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) | #0060FF | 0.100 |
| Deuteranopia (no green cones) | #004DFB | 0.072 |
| Tritanopia (no blue cones) | #006D98 | 0.222 |
| Achromatopsia (no color) | #575757 | 0.292 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #491DFF
#491DFF
oklch(49.1% 0.29 275.9)
- #726000
#726000
oklch(49.2% 0.101 96.3)
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 #491DFF, closest first.
No curated palette has a color within ΔE 0.04 of #491DFF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Royal Blue #3A2EFE ΔE 0.023
- Blue Purple #5A06EF ΔE 0.042
- Vivid Blue #152EFF ΔE 0.053
- Purpley Blue #5F34E7 ΔE 0.059
- Purply Blue #661AEE ΔE 0.059
- Vibrant Blue #0339F8 ΔE 0.060
- Rich Blue #021BF9 ΔE 0.070
- Strong Blue #0C06F7 ΔE 0.074
Use #491DFF 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.