#5B4587
Closest named color: Twilight (#4E518B). oklch(44.5% 0.107 297.3), rgb(91, 69, 135).
Aa
White text reads best on this color (7.93:1).
About this color
#5B4587 is a dark, moderately saturated purple. In OKLCH its lightness is 45%, its chroma 0.107 and its hue 297°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.036 away. White text reads best on it, at 7.93:1.
| Hue family | Purples |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.107) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.64:1 |
| White text | 7.93:1 |
Values
| HEX | #5B4587 |
| RGB | rgb(91, 69, 135) |
| HSL | hsl(260, 32%, 40%) |
| OKLCH | oklch(44.5% 0.107 297.3) |
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 #5B4587 | 7.93:1 | AAA | Lc -92.1 | Preferred for body text |
| Black text on #5B4587 | 2.64:1 | Fails | Lc 16.6 | Dividers and decoration only |
| #5B4587 text on white | 7.93:1 | AAA | Lc 87.4 | Fine for body text |
| #5B4587 text on black | 2.64:1 | Fails | Lc -14.8 | 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
#EBE8F5
oklch(93.7% 0.018 296.6)
-
Step 200
200
#DBD5EE
oklch(88.5% 0.035 296.7)
-
Step 300
300
#C4B9E5
oklch(80.9% 0.062 296.4)
-
Step 400
400
#A793D7
oklch(70.6% 0.1 297.3)
-
Step 500
500
#9277CD
oklch(63.1% 0.128 297)
-
Step 600
600
#7D5FB9
oklch(55.6% 0.137 297.1)
-
Step 700
700
#6A4EA0
oklch(49.2% 0.128 297.2)
-
Step 800
800 (this color)
#5B4587
oklch(44.5% 0.107 297.3)
-
Step 900
900
#473768
oklch(37.8% 0.083 297.3)
-
Step 950
950
#29203D
oklch(26.9% 0.054 296.9)
#5B4587 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) | #2F5189 | 0.067 |
| Deuteranopia (no green cones) | #345085 | 0.062 |
| Tritanopia (no blue cones) | #52515F | 0.084 |
| Achromatopsia (no color) | #515151 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B4587
#5B4587
oklch(44.5% 0.107 297.3)
- #505B00
#505B00
oklch(44.6% 0.103 117.6)
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 #5B4587, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.036
- Dark Slate Blue #483D8B ΔE 0.042
- Blueberry #464196 ΔE 0.046
- Dusk #4E5481 ΔE 0.048
- Rebecca Purple #663399 ΔE 0.056
- Dusty Grape #545775 ΔE 0.065
- Denim Blue #3B5B92 ΔE 0.071
- Dusky Blue #475F94 ΔE 0.073
Use #5B4587 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.