#6364BB
Closest named color: Iris (#6258C4). oklch(54.4% 0.133 280.5), rgb(99, 100, 187).
Aa
White text reads best on this color (5.15:1).
About this color
#6364BB is a medium-dark, moderately saturated purple. In OKLCH its lightness is 54%, its chroma 0.133 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.035 away. White text reads best on it, at 5.15:1.
| Hue family | Purples |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.133) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 4.07:1 |
| White text | 5.15:1 |
Values
| HEX | #6364BB |
| RGB | rgb(99, 100, 187) |
| HSL | hsl(239, 39%, 56%) |
| OKLCH | oklch(54.4% 0.133 280.5) |
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 #6364BB | 5.15:1 | AA | Lc -80.8 | Fine for body text |
| Black text on #6364BB | 4.07:1 | AA large text | Lc 28.7 | Dividers and decoration only |
| #6364BB text on white | 5.15:1 | AA | Lc 75.4 | Fine for body text |
| #6364BB text on black | 4.07:1 | AA large text | Lc -26.3 | 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
#D4D7EF
oklch(88.4% 0.033 280)
-
Step 300
300
#B9BDE7
oklch(80.9% 0.059 280.7)
-
Step 400
400
#959ADC
oklch(70.7% 0.096 280.3)
-
Step 500
500
#7C80D2
oklch(63.2% 0.122 280.2)
-
Step 600
600 (this color)
#6364BB
oklch(54.4% 0.133 280.5)
-
Step 700
700
#5556A5
oklch(49.2% 0.124 280.3)
-
Step 800
800
#464685
oklch(42.6% 0.103 281.1)
-
Step 900
900
#3A3C6B
oklch(37.8% 0.08 280)
-
Step 950
950
#22233F
oklch(27% 0.052 280.8)
#6364BB 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) | #4071BE | 0.050 |
| Deuteranopia (no green cones) | #3A6AB9 | 0.050 |
| Tritanopia (no blue cones) | #447686 | 0.116 |
| Achromatopsia (no color) | #6D6D6D | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6364BB
#6364BB
oklch(54.4% 0.133 280.5)
- #7F7100
#7F7100
oklch(54.5% 0.114 100.8)
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 #6364BB, closest first.
No curated palette has a color within ΔE 0.04 of #6364BB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.035
- Dark Periwinkle #665FD1 ΔE 0.038
- Slate Blue #6A5ACD ΔE 0.040
- Light Indigo #6D5ACF ΔE 0.044
- French Blue #436BAD ΔE 0.050
- Windows Blue #3778BF ΔE 0.066
- Mid Blue #276AB3 ΔE 0.067
- Deep Lavender #8D5EB7 ΔE 0.068
Use #6364BB 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.