#605BBC
Closest named color: Iris (#6258C4). oklch(52.5% 0.148 282.4), rgb(96, 91, 188).
Aa
White text reads best on this color (5.64:1).
About this color
#605BBC is a medium-dark, vivid purple. In OKLCH its lightness is 53%, its chroma 0.148 and its hue 282°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.015 away. White text reads best on it, at 5.64:1.
| Hue family | Purples |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.148) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.71:1 |
| White text | 5.64:1 |
Values
| HEX | #605BBC |
| RGB | rgb(96, 91, 188) |
| HSL | hsl(243, 42%, 55%) |
| OKLCH | oklch(52.5% 0.148 282.4) |
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 #605BBC | 5.64:1 | AA | Lc -83.3 | Fine for body text |
| Black text on #605BBC | 3.71:1 | AA large text | Lc 26.1 | Dividers and decoration only |
| #605BBC text on white | 5.64:1 | AA | Lc 78.0 | Fine for body text |
| #605BBC text on black | 3.71:1 | AA large text | Lc -23.8 | 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
#E7E9F7
oklch(93.7% 0.019 279.5)
-
Step 200
200
#D5D7F2
oklch(88.6% 0.037 282.2)
-
Step 300
300
#B9BCEB
oklch(80.9% 0.066 281.9)
-
Step 400
400
#9698E1
oklch(70.7% 0.106 282.1)
-
Step 500
500
#7E7DD9
oklch(63.1% 0.136 282.3)
-
Step 600
600 (this color)
#605BBC
oklch(52.5% 0.148 282.4)
-
Step 700
700
#5753AB
oklch(49.2% 0.137 282.2)
-
Step 800
800
#47448B
oklch(42.7% 0.114 282.3)
-
Step 900
900
#3B3A6F
oklch(37.7% 0.089 282.1)
-
Step 950
950
#232241
oklch(27% 0.057 283.4)
#605BBC 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) | #2C6ABF | 0.064 |
| Deuteranopia (no green cones) | #2564BA | 0.066 |
| Tritanopia (no blue cones) | #3E7083 | 0.126 |
| Achromatopsia (no color) | #676767 | 0.148 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #605BBC
#605BBC
oklch(52.5% 0.148 282.4)
- #776C00
#776C00
oklch(52.5% 0.11 102.4)
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 #605BBC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.015
- Slate Blue #6A5ACD ΔE 0.031
- Dark Periwinkle #665FD1 ΔE 0.035
- Light Indigo #6D5ACF ΔE 0.036
- Warm Blue #4B57DB ΔE 0.058
- French Blue #436BAD ΔE 0.061
- Bluey Purple #6241C7 ΔE 0.062
- Royal Blue #4169E1 ΔE 0.070
Use #605BBC 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.