#665FC2
Closest named color: Iris (#6258C4). oklch(54.2% 0.15 283.4), rgb(102, 95, 194).
Aa
White text reads best on this color (5.27:1).
About this color
#665FC2 is a medium-dark, vivid purple. In OKLCH its lightness is 54%, its chroma 0.150 and its hue 283°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.020 away. White text reads best on it, at 5.27:1.
| Hue family | Purples |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.150) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.98:1 |
| White text | 5.27:1 |
Values
| HEX | #665FC2 |
| RGB | rgb(102, 95, 194) |
| HSL | hsl(244, 45%, 57%) |
| OKLCH | oklch(54.2% 0.15 283.4) |
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 #665FC2 | 5.27:1 | AA | Lc -81.4 | Fine for body text |
| Black text on #665FC2 | 3.98:1 | AA large text | Lc 28.1 | Dividers and decoration only |
| #665FC2 text on white | 5.27:1 | AA | Lc 76.0 | Fine for body text |
| #665FC2 text on black | 3.98:1 | AA large text | Lc -25.7 | 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
#E8E8F7
oklch(93.5% 0.02 286)
-
Step 200
200
#D5D6F2
oklch(88.4% 0.038 284)
-
Step 300
300
#BABCEC
oklch(81% 0.068 282.9)
-
Step 400
400
#9897E2
oklch(70.7% 0.109 283.9)
-
Step 500
500
#807CD9
oklch(63.1% 0.137 283.7)
-
Step 600
600 (this color)
#665FC2
oklch(54.2% 0.15 283.4)
-
Step 700
700
#5952AC
oklch(49.2% 0.139 283.5)
-
Step 800
800
#48438B
oklch(42.6% 0.116 283.5)
-
Step 900
900
#3C396F
oklch(37.6% 0.09 283.7)
-
Step 950
950
#232241
oklch(27% 0.057 283.4)
#665FC2 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) | #316FC5 | 0.067 |
| Deuteranopia (no green cones) | #2B68C0 | 0.068 |
| Tritanopia (no blue cones) | #467487 | 0.128 |
| Achromatopsia (no color) | #6C6C6C | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #665FC2
#665FC2
oklch(54.2% 0.15 283.4)
- #7B7100
#7B7100
oklch(54.1% 0.114 103.4)
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 #665FC2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.020
- Slate Blue #6A5ACD ΔE 0.022
- Dark Periwinkle #665FD1 ΔE 0.023
- Light Indigo #6D5ACF ΔE 0.026
- Warm Blue #4B57DB ΔE 0.060
- French Blue #436BAD ΔE 0.065
- Royal Blue #4169E1 ΔE 0.065
- Deep Lavender #8D5EB7 ΔE 0.066
Use #665FC2 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.