#5F5BB9
Closest named color: Iris (#6258C4). oklch(52.3% 0.144 282.1), rgb(95, 91, 185).
Aa
White text reads best on this color (5.70:1).
About this color
#5F5BB9 is a medium-dark, vivid purple. In OKLCH its lightness is 52%, its chroma 0.144 and its hue 282°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.020 away. White text reads best on it, at 5.70:1.
| Hue family | Purples |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.144) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.68:1 |
| White text | 5.70:1 |
Values
| HEX | #5F5BB9 |
| RGB | rgb(95, 91, 185) |
| HSL | hsl(243, 40%, 54%) |
| OKLCH | oklch(52.3% 0.144 282.1) |
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 #5F5BB9 | 5.70:1 | AA | Lc -83.6 | Fine for body text |
| Black text on #5F5BB9 | 3.68:1 | AA large text | Lc 25.8 | Dividers and decoration only |
| #5F5BB9 text on white | 5.70:1 | AA | Lc 78.3 | Fine for body text |
| #5F5BB9 text on black | 3.68:1 | AA large text | Lc -23.5 | 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 700.
-
Step 50
50
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E7E9F7
oklch(93.7% 0.019 279.5)
-
Step 200
200
#D4D7F3
oklch(88.6% 0.039 280.7)
-
Step 300
300
#B9BCED
oklch(81% 0.069 282)
-
Step 400
400
#9698E4
oklch(70.8% 0.11 282)
-
Step 500
500
#7D7CDC
oklch(63% 0.142 282)
-
Step 600
600
#6863CA
oklch(55.6% 0.155 282.3)
-
Step 700
700 (this color)
#5F5BB9
oklch(52.3% 0.144 282.1)
-
Step 800
800
#47438D
oklch(42.6% 0.119 282.6)
-
Step 900
900
#3B3971
oklch(37.6% 0.094 282.5)
-
Step 950
950
#222242
oklch(27% 0.059 281.7)
#5F5BB9 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) | #2F6ABC | 0.062 |
| Deuteranopia (no green cones) | #2863B7 | 0.063 |
| Tritanopia (no blue cones) | #3E6F81 | 0.124 |
| Achromatopsia (no color) | #666666 | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5F5BB9
#5F5BB9
oklch(52.3% 0.144 282.1)
- #776B00
#776B00
oklch(52.3% 0.109 101.7)
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 #5F5BB9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.020
- Slate Blue #6A5ACD ΔE 0.036
- Dark Periwinkle #665FD1 ΔE 0.039
- Light Indigo #6D5ACF ΔE 0.041
- French Blue #436BAD ΔE 0.058
- Warm Blue #4B57DB ΔE 0.061
- Bluey Purple #6241C7 ΔE 0.064
- Mid Blue #276AB3 ΔE 0.069
Use #5F5BB9 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.