#5F5FBB
Closest named color: Iris (#6258C4). oklch(53.2% 0.141 280.5), rgb(95, 95, 187).
Aa
White text reads best on this color (5.46:1).
About this color
#5F5FBB is a medium-dark, vivid purple. In OKLCH its lightness is 53%, its chroma 0.141 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.024 away. White text reads best on it, at 5.46:1.
| Hue family | Purples |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.141) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.84:1 |
| White text | 5.46:1 |
Values
| HEX | #5F5FBB |
| RGB | rgb(95, 95, 187) |
| HSL | hsl(240, 40%, 55%) |
| OKLCH | oklch(53.2% 0.141 280.5) |
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 #5F5FBB | 5.46:1 | AA | Lc -82.4 | Fine for body text |
| Black text on #5F5FBB | 3.84:1 | AA large text | Lc 27.0 | Dividers and decoration only |
| #5F5FBB text on white | 5.46:1 | AA | Lc 77.1 | Fine for body text |
| #5F5FBB text on black | 3.84:1 | AA large text | Lc -24.7 | 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 600.
-
Step 50
50
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E7E9F6
oklch(93.6% 0.018 279.1)
-
Step 200
200
#D4D7F1
oklch(88.5% 0.036 280.4)
-
Step 300
300
#B8BDEA
oklch(81% 0.064 279.9)
-
Step 400
400
#9599DF
oklch(70.7% 0.102 280.9)
-
Step 500
500
#7C7FD6
oklch(63.2% 0.129 280.5)
-
Step 600
600 (this color)
#5F5FBB
oklch(53.2% 0.141 280.5)
-
Step 700
700
#5555A8
oklch(49.2% 0.13 280.5)
-
Step 800
800
#454688
oklch(42.7% 0.107 280.2)
-
Step 900
900
#3A3B6D
oklch(37.7% 0.084 280.7)
-
Step 950
950
#222340
oklch(27.1% 0.053 280.7)
#5F5FBB 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) | #356DBE | 0.056 |
| Deuteranopia (no green cones) | #2E66B9 | 0.056 |
| Tritanopia (no blue cones) | #3D7384 | 0.122 |
| Achromatopsia (no color) | #696969 | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5F5FBB
#5F5FBB
oklch(53.2% 0.141 280.5)
- #7B6D00
#7B6D00
oklch(53.1% 0.111 100.5)
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 #5F5FBB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.024
- Slate Blue #6A5ACD ΔE 0.035
- Dark Periwinkle #665FD1 ΔE 0.036
- Light Indigo #6D5ACF ΔE 0.040
- French Blue #436BAD ΔE 0.053
- Warm Blue #4B57DB ΔE 0.062
- Mid Blue #276AB3 ΔE 0.066
- Royal Blue #4169E1 ΔE 0.068
Use #5F5FBB 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.