#6558CA
Closest named color: Iris (#6258C4). oklch(53.4% 0.17 284.2), rgb(101, 88, 202).
Aa
White text reads best on this color (5.52:1).
About this color
#6558CA is a medium-dark, vivid purple. In OKLCH its lightness is 53%, its chroma 0.170 and its hue 284°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.010 away. White text reads best on it, at 5.52:1.
| Hue family | Purples |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.170) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.80:1 |
| White text | 5.52:1 |
Values
| HEX | #6558CA |
| RGB | rgb(101, 88, 202) |
| HSL | hsl(247, 52%, 57%) |
| OKLCH | oklch(53.4% 0.17 284.2) |
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 #6558CA | 5.52:1 | AA | Lc -82.6 | Fine for body text |
| Black text on #6558CA | 3.80:1 | AA large text | Lc 26.8 | Dividers and decoration only |
| #6558CA text on white | 5.52:1 | AA | Lc 77.3 | Fine for body text |
| #6558CA text on black | 3.80:1 | AA large text | Lc -24.5 | 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 600.
-
Step 50
50
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E8E8F9
oklch(93.6% 0.023 286)
-
Step 200
200
#D5D6F5
oklch(88.5% 0.042 284)
-
Step 300
300
#BABAF1
oklch(80.8% 0.077 284.5)
-
Step 400
400
#9895EA
oklch(70.7% 0.123 284.4)
-
Step 500
500
#8079E4
oklch(63.2% 0.157 283.9)
-
Step 600
600 (this color)
#6558CA
oklch(53.4% 0.17 284.2)
-
Step 700
700
#5A4DB5
oklch(49% 0.159 284.6)
-
Step 800
800
#494093
oklch(42.7% 0.132 284.2)
-
Step 900
900
#3D3775
oklch(37.7% 0.103 284.7)
-
Step 950
950
#232145
oklch(27% 0.065 283.6)
#6558CA 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) | #056CCE | 0.088 |
| Deuteranopia (no green cones) | #0065C8 | 0.087 |
| Tritanopia (no blue cones) | #3F7288 | 0.145 |
| Achromatopsia (no color) | #696969 | 0.171 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6558CA
#6558CA
oklch(53.4% 0.17 284.2)
- #786F00
#786F00
oklch(53.3% 0.113 103.9)
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 #6558CA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.010
- Slate Blue #6A5ACD ΔE 0.011
- Light Indigo #6D5ACF ΔE 0.016
- Dark Periwinkle #665FD1 ΔE 0.019
- Warm Blue #4B57DB ΔE 0.046
- Bluey Purple #6241C7 ΔE 0.051
- Royal Blue #4169E1 ΔE 0.064
- Purpley #8756E4 ΔE 0.068
Use #6558CA 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.