#5F51B7
Closest named color: Iris (#6258C4). oklch(50.3% 0.155 285.6), rgb(95, 81, 183).
Aa
White text reads best on this color (6.27:1).
About this color
#5F51B7 is a medium-dark, vivid purple. In OKLCH its lightness is 50%, its chroma 0.155 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.026 away. White text reads best on it, at 6.27:1.
| Hue family | Purples |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.155) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.34:1 |
| White text | 6.27:1 |
Values
| HEX | #5F51B7 |
| RGB | rgb(95, 81, 183) |
| HSL | hsl(248, 41%, 52%) |
| OKLCH | oklch(50.3% 0.155 285.6) |
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 #5F51B7 | 6.27:1 | AA | Lc -86.1 | Fine for body text |
| Black text on #5F51B7 | 3.34:1 | AA large text | Lc 23.1 | Dividers and decoration only |
| #5F51B7 text on white | 6.27:1 | AA | Lc 81.0 | Fine for body text |
| #5F51B7 text on black | 3.34:1 | AA large text | Lc -20.9 | 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
#E8E8F8
oklch(93.6% 0.022 286)
-
Step 200
200
#D6D6F4
oklch(88.5% 0.041 285.5)
-
Step 300
300
#BBBAF0
oklch(80.8% 0.076 285.4)
-
Step 400
400
#9A95E8
oklch(70.7% 0.12 285.7)
-
Step 500
500
#8378E1
oklch(63.1% 0.154 285.9)
-
Step 600
600
#6E5FCF
oklch(55.7% 0.167 285.8)
-
Step 700
700 (this color)
#5F51B7
oklch(50.3% 0.155 285.6)
-
Step 800
800
#4B4091
oklch(42.7% 0.129 285.8)
-
Step 900
900
#3E3774
oklch(37.7% 0.101 285.7)
-
Step 950
950
#242144
oklch(27.1% 0.064 285.2)
#5F51B7 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) | #1463BA | 0.082 |
| Deuteranopia (no green cones) | #0F5DB5 | 0.082 |
| Tritanopia (no blue cones) | #41687C | 0.131 |
| Achromatopsia (no color) | #606060 | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5F51B7
#5F51B7
oklch(50.3% 0.155 285.6)
- #6D6700
#6D6700
oklch(50.3% 0.107 105.6)
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 #5F51B7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.026
- Bluey Purple #6241C7 ΔE 0.044
- Slate Blue #6A5ACD ΔE 0.044
- Light Indigo #6D5ACF ΔE 0.048
- Dark Periwinkle #665FD1 ΔE 0.052
- Blue With A Hint Of Purple #533CC6 ΔE 0.058
- Warm Blue #4B57DB ΔE 0.063
- Blurple #5539CC ΔE 0.065
Use #5F51B7 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.