#5A40A4
Closest named color: Rebecca Purple (#663399). oklch(45.5% 0.154 291), rgb(90, 64, 164).
Aa
White text reads best on this color (7.76:1).
About this color
#5A40A4 is a medium-dark, vivid purple. In OKLCH its lightness is 46%, its chroma 0.154 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.038 away. White text reads best on it, at 7.76:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.154) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.70:1 |
| White text | 7.76:1 |
Values
| HEX | #5A40A4 |
| RGB | rgb(90, 64, 164) |
| HSL | hsl(256, 44%, 45%) |
| OKLCH | oklch(45.5% 0.154 291) |
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 #5A40A4 | 7.76:1 | AAA | Lc -91.4 | Preferred for body text |
| Black text on #5A40A4 | 2.70:1 | Fails | Lc 17.4 | Dividers and decoration only |
| #5A40A4 text on white | 7.76:1 | AAA | Lc 86.6 | Fine for body text |
| #5A40A4 text on black | 2.70:1 | Fails | Lc -15.5 | 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 800.
-
Step 50
50
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#E9E7FB
oklch(93.5% 0.027 290.5)
-
Step 200
200
#D8D4F8
oklch(88.4% 0.049 290.4)
-
Step 300
300
#C0B7F7
oklch(80.9% 0.09 290.7)
-
Step 400
400
#A28FF3
oklch(70.8% 0.144 291)
-
Step 500
500
#8D6FEE
oklch(63.1% 0.184 291.1)
-
Step 600
600
#7853DD
oklch(55.6% 0.2 290.8)
-
Step 700
700
#6642BF
oklch(49.1% 0.186 291.3)
-
Step 800
800 (this color)
#5A40A4
oklch(45.5% 0.154 291)
-
Step 900
900
#44317B
oklch(37.6% 0.12 291.4)
-
Step 950
950
#271E48
oklch(27% 0.075 290.3)
#5A40A4 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) | #0054A7 | 0.094 |
| Deuteranopia (no green cones) | #0050A2 | 0.093 |
| Tritanopia (no blue cones) | #44576C | 0.125 |
| Achromatopsia (no color) | #525252 | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5A40A4
#5A40A4
oklch(45.5% 0.154 291)
- #5A5B00
#5A5B00
oklch(45.5% 0.1 110.5)
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 #5A40A4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.038
- Blueberry #464196 ΔE 0.040
- Dark Slate Blue #483D8B ΔE 0.052
- Blue With A Hint Of Purple #533CC6 ΔE 0.057
- Bluey Purple #6241C7 ΔE 0.057
- Twilight #4E518B ΔE 0.065
- Blurple #5539CC ΔE 0.066
- Iris #6258C4 ΔE 0.075
Use #5A40A4 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.