#6657C0
Closest named color: Iris (#6258C4). oklch(52.6% 0.158 286.1), rgb(102, 87, 192).
Aa
White text reads best on this color (5.69:1).
About this color
#6657C0 is a medium-dark, vivid purple. In OKLCH its lightness is 53%, its chroma 0.158 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.009 away. White text reads best on it, at 5.69:1.
| Hue family | Purples |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.158) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.68:1 |
| White text | 5.69:1 |
Values
| HEX | #6657C0 |
| RGB | rgb(102, 87, 192) |
| HSL | hsl(249, 45%, 55%) |
| OKLCH | oklch(52.6% 0.158 286.1) |
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 #6657C0 | 5.69:1 | AA | Lc -83.5 | Fine for body text |
| Black text on #6657C0 | 3.68:1 | AA large text | Lc 25.9 | Dividers and decoration only |
| #6657C0 text on white | 5.69:1 | AA | Lc 78.2 | Fine for body text |
| #6657C0 text on black | 3.68:1 | AA large text | Lc -23.6 | 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
#F5F5FC
oklch(97.2% 0.009 286.2)
-
Step 100
100
#E8E8F7
oklch(93.5% 0.02 286)
-
Step 200
200
#D6D6F3
oklch(88.5% 0.04 285.6)
-
Step 300
300
#BCBAED
oklch(80.8% 0.072 286.5)
-
Step 400
400
#9B95E4
oklch(70.6% 0.114 286.6)
-
Step 500
500
#8479DD
oklch(63.1% 0.147 286.4)
-
Step 600
600 (this color)
#6657C0
oklch(52.6% 0.158 286.1)
-
Step 700
700
#5C4FAF
oklch(49.1% 0.147 285.8)
-
Step 800
800
#4B418D
oklch(42.6% 0.121 286)
-
Step 900
900
#3E3871
oklch(37.7% 0.095 285.7)
-
Step 950
950
#242142
oklch(26.9% 0.06 285.8)
#6657C0 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) | #1D69C4 | 0.083 |
| Deuteranopia (no green cones) | #1B64BE | 0.082 |
| Tritanopia (no blue cones) | #486E83 | 0.133 |
| Achromatopsia (no color) | #676767 | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6657C0
#6657C0
oklch(52.6% 0.158 286.1)
- #736E00
#736E00
oklch(52.6% 0.112 106.5)
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 #6657C0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.009
- Slate Blue #6A5ACD ΔE 0.022
- Light Indigo #6D5ACF ΔE 0.027
- Dark Periwinkle #665FD1 ΔE 0.031
- Bluey Purple #6241C7 ΔE 0.051
- Warm Blue #4B57DB ΔE 0.057
- Blue With A Hint Of Purple #533CC6 ΔE 0.071
- Deep Lavender #8D5EB7 ΔE 0.072
Use #6657C0 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.