#5A437F
Closest named color: Twilight (#4E518B). oklch(43.5% 0.099 300), rgb(90, 67, 127).
Aa
White text reads best on this color (8.25:1).
About this color
#5A437F is a dark, moderately saturated purple. In OKLCH its lightness is 44%, its chroma 0.099 and its hue 300°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.042 away. White text reads best on it, at 8.25:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.099) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.54:1 |
| White text | 8.25:1 |
Values
| HEX | #5A437F |
| RGB | rgb(90, 67, 127) |
| HSL | hsl(263, 31%, 38%) |
| OKLCH | oklch(43.5% 0.099 300) |
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 #5A437F | 8.25:1 | AAA | Lc -93.0 | Preferred for body text |
| Black text on #5A437F | 2.54:1 | Fails | Lc 15.6 | Dividers and decoration only |
| #5A437F text on white | 8.25:1 | AAA | Lc 88.4 | Fine for body text |
| #5A437F text on black | 2.54:1 | 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
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#EBE8F4
oklch(93.7% 0.016 297.5)
-
Step 200
200
#DCD5EC
oklch(88.6% 0.032 299.6)
-
Step 300
300
#C6B9E1
oklch(81% 0.057 300)
-
Step 400
400
#A994D2
oklch(70.8% 0.092 299.6)
-
Step 500
500
#9578C6
oklch(63.2% 0.118 300.2)
-
Step 600
600
#7F60B2
oklch(55.6% 0.127 299.7)
-
Step 700
700
#6C4F99
oklch(49.2% 0.118 300.2)
-
Step 800
800 (this color)
#5A437F
oklch(43.5% 0.099 300)
-
Step 900
900
#483764
oklch(37.6% 0.077 300.1)
-
Step 950
950
#2A213B
oklch(27.1% 0.048 299.1)
#5A437F 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) | #314E81 | 0.065 |
| Deuteranopia (no green cones) | #364E7D | 0.060 |
| Tritanopia (no blue cones) | #534E5B | 0.077 |
| Achromatopsia (no color) | #4F4F4F | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5A437F
#5A437F
oklch(43.5% 0.099 300)
- #4B5909
#4B5909
oklch(43.7% 0.099 120)
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 #5A437F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.042
- Dark Slate Blue #483D8B ΔE 0.043
- Dusk #4E5481 ΔE 0.049
- Blueberry #464196 ΔE 0.052
- Rebecca Purple #663399 ΔE 0.062
- Dusty Grape #545775 ΔE 0.063
- Denim Blue #3B5B92 ΔE 0.076
- YInMn Blue #415A77 ΔE 0.077
Use #5A437F 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.