#5A51E4
Closest named color: Warm Blue (#4B57DB). oklch(53.4% 0.215 279), rgb(90, 81, 228).
Aa
White text reads best on this color (5.62:1).
About this color
#5A51E4 is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.215 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.026 away. White text reads best on it, at 5.62:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.215) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.73:1 |
| White text | 5.62:1 |
Values
| HEX | #5A51E4 |
| RGB | rgb(90, 81, 228) |
| HSL | hsl(244, 73%, 61%) |
| OKLCH | oklch(53.4% 0.215 279) |
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 #5A51E4 | 5.62:1 | AA | Lc -82.8 | Fine for body text |
| Black text on #5A51E4 | 3.73:1 | AA large text | Lc 26.5 | Dividers and decoration only |
| #5A51E4 text on white | 5.62:1 | AA | Lc 77.5 | Fine for body text |
| #5A51E4 text on black | 3.73:1 | AA large text | Lc -24.2 | 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 600.
-
Step 50
50
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E5E8FD
oklch(93.5% 0.029 279.4)
-
Step 200
200
#D1D6FD
oklch(88.5% 0.054 279.5)
-
Step 300
300
#B3BAFF
oklch(80.8% 0.098 279.5)
-
Step 400
400
#8D94FE
oklch(70.7% 0.154 278.8)
-
Step 500
500
#7475FD
oklch(63.2% 0.197 278.8)
-
Step 600
600 (this color)
#5A51E4
oklch(53.4% 0.215 279)
-
Step 700
700
#5047CD
oklch(49.1% 0.199 279.1)
-
Step 800
800
#413BA6
oklch(42.7% 0.166 279.2)
-
Step 900
900
#363583
oklch(37.8% 0.128 278.9)
-
Step 950
950
#1F204D
oklch(27.1% 0.081 278.5)
#5A51E4 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) | #006DE9 | 0.082 |
| Deuteranopia (no green cones) | #0061E1 | 0.072 |
| Tritanopia (no blue cones) | #007793 | 0.181 |
| Achromatopsia (no color) | #676767 | 0.215 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5A51E4
#5A51E4
oklch(53.4% 0.215 279)
- #7D6D00
#7D6D00
oklch(53.4% 0.111 99.1)
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 #5A51E4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.026
- Neon Blue #4361EE ΔE 0.043
- Dark Periwinkle #665FD1 ΔE 0.049
- Slate Blue #6A5ACD ΔE 0.049
- Purpley Blue #5F34E7 ΔE 0.050
- Light Indigo #6D5ACF ΔE 0.050
- Iris #6258C4 ΔE 0.054
- Burple #6832E3 ΔE 0.055
Use #5A51E4 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.