#605DCB
Closest named color: Dark Periwinkle (#665FD1). oklch(54% 0.166 280.5), rgb(96, 93, 203).
Aa
White text reads best on this color (5.34:1).
About this color
#605DCB is a medium-dark, vivid purple. In OKLCH its lightness is 54%, its chroma 0.166 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.014 away. White text reads best on it, at 5.34:1.
| Hue family | Purples |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.166) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 3.92:1 |
| White text | 5.34:1 |
Values
| HEX | #605DCB |
| RGB | rgb(96, 93, 203) |
| HSL | hsl(242, 51%, 58%) |
| OKLCH | oklch(54% 0.166 280.5) |
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 #605DCB | 5.34:1 | AA | Lc -81.7 | Fine for body text |
| Black text on #605DCB | 3.92:1 | AA large text | Lc 27.7 | Dividers and decoration only |
| #605DCB text on white | 5.34:1 | AA | Lc 76.3 | Fine for body text |
| #605DCB text on black | 3.92:1 | AA large text | Lc -25.4 | 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
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E7E9F9
oklch(93.7% 0.022 280.3)
-
Step 200
200
#D3D7F5
oklch(88.5% 0.041 279.5)
-
Step 300
300
#B7BCF1
oklch(81% 0.075 280.4)
-
Step 400
400
#9397E9
oklch(70.6% 0.119 280.7)
-
Step 500
500
#7A7BE3
oklch(63% 0.154 280.6)
-
Step 600
600 (this color)
#605DCB
oklch(54% 0.166 280.5)
-
Step 700
700
#5450B5
oklch(49.1% 0.155 280.8)
-
Step 800
800
#444392
oklch(42.8% 0.127 280.2)
-
Step 900
900
#393975
oklch(37.7% 0.1 280.5)
-
Step 950
950
#212244
oklch(27% 0.062 280.1)
#605DCB 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) | #1B6FCF | 0.073 |
| Deuteranopia (no green cones) | #0367C9 | 0.076 |
| Tritanopia (no blue cones) | #32768B | 0.143 |
| Achromatopsia (no color) | #6B6B6B | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #605DCB
#605DCB
oklch(54% 0.166 280.5)
- #7E6F00
#7E6F00
oklch(53.9% 0.112 99.9)
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 #605DCB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.014
- Iris #6258C4 ΔE 0.015
- Slate Blue #6A5ACD ΔE 0.016
- Light Indigo #6D5ACF ΔE 0.021
- Warm Blue #4B57DB ΔE 0.042
- Royal Blue #4169E1 ΔE 0.053
- Bluey Purple #6241C7 ΔE 0.062
- Neon Blue #4361EE ΔE 0.063
Use #605DCB 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.