#6364BC
Closest named color: Iris (#6258C4). oklch(54.5% 0.135 280.5), rgb(99, 100, 188).
Aa
White text reads best on this color (5.14:1).
About this color
#6364BC is a medium-dark, moderately saturated purple. In OKLCH its lightness is 55%, its chroma 0.135 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.034 away. White text reads best on it, at 5.14:1.
| Hue family | Purples |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 4.07:1 |
| White text | 5.14:1 |
Values
| HEX | #6364BC |
| RGB | rgb(99, 100, 188) |
| HSL | hsl(239, 40%, 56%) |
| OKLCH | oklch(54.5% 0.135 280.5) |
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 #6364BC | 5.14:1 | AA | Lc -80.7 | Fine for body text |
| Black text on #6364BC | 4.07:1 | AA large text | Lc 28.8 | Dividers and decoration only |
| #6364BC text on white | 5.14:1 | AA | Lc 75.3 | Fine for body text |
| #6364BC text on black | 4.07:1 | AA large text | Lc -26.4 | 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
#D4D7F0
oklch(88.5% 0.034 280.2)
-
Step 300
300
#B9BDE8
oklch(81% 0.061 280.8)
-
Step 400
400
#959ADC
oklch(70.7% 0.096 280.3)
-
Step 500
500
#7C7FD2
oklch(63% 0.124 280.6)
-
Step 600
600 (this color)
#6364BC
oklch(54.5% 0.135 280.5)
-
Step 700
700
#5555A5
oklch(49% 0.125 280.7)
-
Step 800
800
#454686
oklch(42.6% 0.104 280.3)
-
Step 900
900
#3A3B6B
oklch(37.6% 0.081 280.8)
-
Step 950
950
#22233F
oklch(27% 0.052 280.8)
#6364BC 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) | #3F71BF | 0.050 |
| Deuteranopia (no green cones) | #396ABA | 0.051 |
| Tritanopia (no blue cones) | #447787 | 0.117 |
| Achromatopsia (no color) | #6D6D6D | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6364BC
#6364BC
oklch(54.5% 0.135 280.5)
- #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 #6364BC, closest first.
No curated palette has a color within ΔE 0.04 of #6364BC.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.034
- Dark Periwinkle #665FD1 ΔE 0.037
- Slate Blue #6A5ACD ΔE 0.039
- Light Indigo #6D5ACF ΔE 0.042
- French Blue #436BAD ΔE 0.051
- Windows Blue #3778BF ΔE 0.066
- Mid Blue #276AB3 ΔE 0.067
- Deep Lavender #8D5EB7 ΔE 0.068
Use #6364BC 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.