#5A287E
Closest named color: Rebecca Purple (#663399). oklch(39% 0.142 307.8), rgb(90, 40, 126).
Aa
White text reads best on this color (10.29:1).
About this color
#5A287E is a dark, vivid purple. In OKLCH its lightness is 39%, its chroma 0.142 and its hue 308°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.055 away. White text reads best on it, at 10.29:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | vivid (0.142) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.03:1 |
| White text | 10.29:1 |
Values
| HEX | #5A287E |
| RGB | rgb(90, 40, 126) |
| HSL | hsl(275, 52%, 33%) |
| OKLCH | oklch(39% 0.142 307.8) |
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 #5A287E | 10.29:1 | AAA | Lc -97.4 | Preferred for body text |
| Black text on #5A287E | 2.03:1 | Fails | Lc 10.6 | Not readable |
| #5A287E text on white | 10.29:1 | AAA | Lc 93.3 | Preferred for body text |
| #5A287E text on black | 2.03:1 | Fails | Lc -9.2 | Not readable |
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 900.
-
Step 50
50
#F8F3FD
oklch(97.1% 0.014 308.3)
-
Step 100
100
#EFE5FA
oklch(93.6% 0.03 307.1)
-
Step 200
200
#E4CFF8
oklch(88.5% 0.06 308.2)
-
Step 300
300
#D3AEF6
oklch(80.8% 0.107 307.6)
-
Step 400
400
#BE80F1
oklch(70.8% 0.17 308)
-
Step 500
500
#AE59EC
oklch(63.1% 0.217 308)
-
Step 600
600
#9936DA
oklch(55.5% 0.236 307.8)
-
Step 700
700
#8326BD
oklch(49.1% 0.219 307.9)
-
Step 800
800
#6A2399
oklch(42.6% 0.181 307.6)
-
Step 900
900 (this color)
#5A287E
oklch(39% 0.142 307.8)
-
Step 950
950
#321747
oklch(27% 0.088 307.4)
#5A287E 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) | #003F81 | 0.120 |
| Deuteranopia (no green cones) | #16417C | 0.112 |
| Tritanopia (no blue cones) | #543A4F | 0.100 |
| Achromatopsia (no color) | #404040 | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5A287E
#5A287E
oklch(39% 0.142 307.8)
- #354E00
#354E00
oklch(38.9% 0.101 127.7)
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 #5A287E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.055
- Dark Slate Blue #483D8B ΔE 0.058
- Indigo #4B0082 ΔE 0.066
- Blueberry #464196 ΔE 0.074
- Royal Purple #4B006E ΔE 0.074
- Grape Purple #5D1451 ΔE 0.082
- Purple #800080 ΔE 0.084
- Chrysanthemum #560BAD ΔE 0.085
Use #5A287E 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.