#5637A8
Closest named color: Rebecca Purple (#663399). oklch(44% 0.171 290.2), rgb(86, 55, 168).
Aa
White text reads best on this color (8.37:1).
About this color
#5637A8 is a dark, vivid purple. In OKLCH its lightness is 44%, its chroma 0.171 and its hue 290°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.040 away. White text reads best on it, at 8.37:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | vivid (0.171) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.50:1 |
| White text | 8.37:1 |
Values
| HEX | #5637A8 |
| RGB | rgb(86, 55, 168) |
| HSL | hsl(256, 51%, 44%) |
| OKLCH | oklch(44% 0.171 290.2) |
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 #5637A8 | 8.37:1 | AAA | Lc -93.0 | Preferred for body text |
| Black text on #5637A8 | 2.50:1 | Fails | Lc 15.7 | Dividers and decoration only |
| #5637A8 text on white | 8.37:1 | AAA | Lc 88.3 | Fine for body text |
| #5637A8 text on black | 2.50:1 | Fails | Lc -13.8 | 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 800.
-
Step 50
50
#F5F4FE
oklch(97.1% 0.013 290.8)
-
Step 100
100
#E9E7FD
oklch(93.6% 0.03 290)
-
Step 200
200
#D8D4FC
oklch(88.6% 0.055 289.8)
-
Step 300
300
#BFB6FD
oklch(80.9% 0.1 289.8)
-
Step 400
400
#A18CFC
oklch(70.7% 0.16 290.3)
-
Step 500
500
#8C6AFA
oklch(63% 0.206 290.1)
-
Step 600
600
#784CE9
oklch(55.6% 0.223 290.1)
-
Step 700
700
#663BCA
oklch(49% 0.207 290.4)
-
Step 800
800 (this color)
#5637A8
oklch(44% 0.171 290.2)
-
Step 900
900
#442E82
oklch(37.7% 0.135 290.5)
-
Step 950
950
#271C4C
oklch(26.9% 0.085 290)
#5637A8 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) | #0050AB | 0.095 |
| Deuteranopia (no green cones) | #004BA6 | 0.093 |
| Tritanopia (no blue cones) | #3B536B | 0.138 |
| Achromatopsia (no color) | #4E4E4E | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5637A8
#5637A8
oklch(44% 0.171 290.2)
- #565700
#565700
oklch(44.1% 0.097 110.5)
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 #5637A8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.040
- Blueberry #464196 ΔE 0.044
- Blue With A Hint Of Purple #533CC6 ΔE 0.050
- Dark Slate Blue #483D8B ΔE 0.054
- Blurple #5539CC ΔE 0.058
- Bluey Purple #6241C7 ΔE 0.058
- Chrysanthemum #560BAD ΔE 0.059
- Majorelle Blue #3F37C9 ΔE 0.066
Use #5637A8 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.