#605CB5
Closest named color: Iris (#6258C4). oklch(52.3% 0.137 282.6), rgb(96, 92, 181).
Aa
White text reads best on this color (5.68:1).
About this color
#605CB5 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 52%, its chroma 0.137 and its hue 283°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.027 away. White text reads best on it, at 5.68:1.
| Hue family | Purples |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.137) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.69:1 |
| White text | 5.68:1 |
Values
| HEX | #605CB5 |
| RGB | rgb(96, 92, 181) |
| HSL | hsl(243, 38%, 54%) |
| OKLCH | oklch(52.3% 0.137 282.6) |
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 #605CB5 | 5.68:1 | AA | Lc -83.5 | Fine for body text |
| Black text on #605CB5 | 3.69:1 | AA large text | Lc 25.8 | Dividers and decoration only |
| #605CB5 text on white | 5.68:1 | AA | Lc 78.2 | Fine for body text |
| #605CB5 text on black | 3.69:1 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E7E9F7
oklch(93.7% 0.019 279.5)
-
Step 200
200
#D5D7F1
oklch(88.6% 0.036 282.1)
-
Step 300
300
#BABCEB
oklch(81% 0.066 282.9)
-
Step 400
400
#9798E1
oklch(70.7% 0.106 282.7)
-
Step 500
500
#7E7DD8
oklch(63.1% 0.135 282.3)
-
Step 600
600
#6964C5
oklch(55.5% 0.146 282.9)
-
Step 700
700 (this color)
#605CB5
oklch(52.3% 0.137 282.6)
-
Step 800
800
#47448A
oklch(42.6% 0.113 282.4)
-
Step 900
900
#3B3A6F
oklch(37.7% 0.089 282.1)
-
Step 950
950
#232241
oklch(27% 0.057 283.4)
#605CB5 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) | #356AB8 | 0.058 |
| Deuteranopia (no green cones) | #3064B3 | 0.058 |
| Tritanopia (no blue cones) | #436F80 | 0.117 |
| Achromatopsia (no color) | #676767 | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #605CB5
#605CB5
oklch(52.3% 0.137 282.6)
- #766B00
#766B00
oklch(52.2% 0.109 102.4)
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 #605CB5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.027
- Slate Blue #6A5ACD ΔE 0.041
- Dark Periwinkle #665FD1 ΔE 0.045
- Light Indigo #6D5ACF ΔE 0.046
- French Blue #436BAD ΔE 0.055
- Dusky Blue #475F94 ΔE 0.066
- Mid Blue #276AB3 ΔE 0.068
- Warm Blue #4B57DB ΔE 0.068
Use #605CB5 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.