#605FBC
Closest named color: Iris (#6258C4). oklch(53.3% 0.142 280.9), rgb(96, 95, 188).
Aa
White text reads best on this color (5.43:1).
About this color
#605FBC is a medium-dark, vivid purple. In OKLCH its lightness is 53%, its chroma 0.142 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.022 away. White text reads best on it, at 5.43:1.
| Hue family | Purples |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.142) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.86:1 |
| White text | 5.43:1 |
Values
| HEX | #605FBC |
| RGB | rgb(96, 95, 188) |
| HSL | hsl(241, 41%, 55%) |
| OKLCH | oklch(53.3% 0.142 280.9) |
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 #605FBC | 5.43:1 | AA | Lc -82.3 | Fine for body text |
| Black text on #605FBC | 3.86:1 | AA large text | Lc 27.1 | Dividers and decoration only |
| #605FBC text on white | 5.43:1 | AA | Lc 76.9 | Fine for body text |
| #605FBC text on black | 3.86:1 | AA large text | Lc -24.8 | 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
#E7E9F6
oklch(93.6% 0.018 279.1)
-
Step 200
200
#D4D7F1
oklch(88.5% 0.036 280.4)
-
Step 300
300
#B9BDEA
oklch(81% 0.063 280.9)
-
Step 400
400
#9599DF
oklch(70.7% 0.102 280.9)
-
Step 500
500
#7C7ED6
oklch(63% 0.131 281)
-
Step 600
600 (this color)
#605FBC
oklch(53.3% 0.142 280.9)
-
Step 700
700
#5554A9
oklch(49.1% 0.133 280.9)
-
Step 800
800
#464589
oklch(42.7% 0.11 281.3)
-
Step 900
900
#3A3B6D
oklch(37.7% 0.084 280.7)
-
Step 950
950
#222340
oklch(27.1% 0.053 280.7)
#605FBC 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) | #356DBF | 0.056 |
| Deuteranopia (no green cones) | #2E66BA | 0.058 |
| Tritanopia (no blue cones) | #3E7384 | 0.124 |
| Achromatopsia (no color) | #6A6A6A | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #605FBC
#605FBC
oklch(53.3% 0.142 280.9)
- #7B6E00
#7B6E00
oklch(53.4% 0.111 101.2)
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 #605FBC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.022
- Slate Blue #6A5ACD ΔE 0.033
- Dark Periwinkle #665FD1 ΔE 0.034
- Light Indigo #6D5ACF ΔE 0.038
- French Blue #436BAD ΔE 0.054
- Warm Blue #4B57DB ΔE 0.062
- Mid Blue #276AB3 ΔE 0.067
- Royal Blue #4169E1 ΔE 0.067
Use #605FBC 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.