#6558B4
Closest named color: Iris (#6258C4). oklch(51.9% 0.14 286.9), rgb(101, 88, 180).
Aa
White text reads best on this color (5.81:1).
About this color
#6558B4 is a medium-dark, vivid purple. In OKLCH its lightness is 52%, its chroma 0.140 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.025 away. White text reads best on it, at 5.81:1.
| Hue family | Purples |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.140) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.60:1 |
| White text | 5.81:1 |
Values
| HEX | #6558B4 |
| RGB | rgb(101, 88, 180) |
| HSL | hsl(248, 38%, 53%) |
| OKLCH | oklch(51.9% 0.14 286.9) |
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 #6558B4 | 5.81:1 | AA | Lc -84.2 | Fine for body text |
| Black text on #6558B4 | 3.60:1 | AA large text | Lc 25.2 | Dividers and decoration only |
| #6558B4 text on white | 5.81:1 | AA | Lc 78.9 | Fine for body text |
| #6558B4 text on black | 3.60:1 | AA large text | Lc -22.9 | 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
#F5F5FB
oklch(97.2% 0.008 286.3)
-
Step 100
100
#E8E8F7
oklch(93.5% 0.02 286)
-
Step 200
200
#D7D6F2
oklch(88.6% 0.038 287.2)
-
Step 300
300
#BDBBEB
oklch(81% 0.067 286.7)
-
Step 400
400
#9C96E1
oklch(70.7% 0.108 286.9)
-
Step 500
500
#857AD8
oklch(63.1% 0.138 287.1)
-
Step 600
600
#6F61C6
oklch(55.5% 0.152 286.7)
-
Step 700
700 (this color)
#6558B4
oklch(51.9% 0.14 286.9)
-
Step 800
800
#4C428A
oklch(42.7% 0.115 286.8)
-
Step 900
900
#3F386F
oklch(37.6% 0.092 287)
-
Step 950
950
#252141
oklch(27% 0.058 287.5)
#6558B4 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) | #3067B7 | 0.070 |
| Deuteranopia (no green cones) | #2E63B2 | 0.070 |
| Tritanopia (no blue cones) | #4D6B7D | 0.118 |
| Achromatopsia (no color) | #656565 | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6558B4
#6558B4
oklch(51.9% 0.14 286.9)
- #706C00
#706C00
oklch(51.8% 0.111 107.2)
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 #6558B4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.025
- Slate Blue #6A5ACD ΔE 0.040
- Light Indigo #6D5ACF ΔE 0.044
- Dark Periwinkle #665FD1 ΔE 0.047
- Bluey Purple #6241C7 ΔE 0.062
- French Blue #436BAD ΔE 0.066
- Deep Lavender #8D5EB7 ΔE 0.071
- Warm Blue #4B57DB ΔE 0.071
Use #6558B4 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.