#6367BD
Closest named color: Dark Periwinkle (#665FD1). oklch(55.2% 0.132 279.1), rgb(99, 103, 189).
Aa
White text reads best on this color (4.99:1).
About this color
#6367BD is a medium-dark, moderately saturated blue. In OKLCH its lightness is 55%, its chroma 0.132 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.039 away. White text reads best on it, at 4.99:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.132) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.20:1 |
| White text | 4.99:1 |
Values
| HEX | #6367BD |
| RGB | rgb(99, 103, 189) |
| HSL | hsl(237, 41%, 56%) |
| OKLCH | oklch(55.2% 0.132 279.1) |
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 #6367BD | 4.99:1 | AA | Lc -79.8 | Fine for body text |
| Black text on #6367BD | 4.20:1 | AA large text | Lc 29.7 | Dividers and decoration only |
| #6367BD text on white | 4.99:1 | AA | Lc 74.4 | Content text, not long reading |
| #6367BD text on black | 4.20:1 | AA large text | Lc -27.3 | 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
#B8BDE7
oklch(80.9% 0.059 279.7)
-
Step 400
400
#949ADB
oklch(70.6% 0.095 279.6)
-
Step 500
500
#7A80D1
oklch(63% 0.121 279.1)
-
Step 600
600 (this color)
#6367BD
oklch(55.2% 0.132 279.1)
-
Step 700
700
#5356A4
oklch(49% 0.123 279.2)
-
Step 800
800
#444785
oklch(42.7% 0.101 279.1)
-
Step 900
900
#393C6B
oklch(37.7% 0.08 279.1)
-
Step 950
950
#21233E
oklch(26.8% 0.05 279.2)
#6367BD 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) | #4473C0 | 0.045 |
| Deuteranopia (no green cones) | #3D6CBB | 0.046 |
| Tritanopia (no blue cones) | #427989 | 0.115 |
| Achromatopsia (no color) | #6F6F6F | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6367BD
#6367BD
oklch(55.2% 0.132 279.1)
- #837200
#837200
oklch(55.1% 0.114 98.9)
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 #6367BD, closest first.
No curated palette has a color within ΔE 0.04 of #6367BD.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.039
- Iris #6258C4 ΔE 0.041
- Slate Blue #6A5ACD ΔE 0.044
- Light Indigo #6D5ACF ΔE 0.046
- French Blue #436BAD ΔE 0.050
- Windows Blue #3778BF ΔE 0.061
- Royal Blue #4169E1 ΔE 0.067
- Mid Blue #276AB3 ΔE 0.067
Use #6367BD 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.