#6372D6
Closest named color: Dark Periwinkle (#665FD1). oklch(58.9% 0.152 274.3), rgb(99, 114, 214).
Aa
Black text reads best on this color (4.90:1).
About this color
#6372D6 is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.152 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.046 away. Black text reads best on it, at 4.90:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.152) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.90:1 |
| White text | 4.27:1 |
Values
| HEX | #6372D6 |
| RGB | rgb(99, 114, 214) |
| HSL | hsl(232, 58%, 61%) |
| OKLCH | oklch(58.9% 0.152 274.3) |
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 #6372D6 | 4.27:1 | AA large text | Lc -74.9 | Content text, not long reading |
| Black text on #6372D6 | 4.90:1 | AA | Lc 34.7 | Non-text elements, placeholder text |
| #6372D6 text on white | 4.27:1 | AA large text | Lc 69.4 | Content text, not long reading |
| #6372D6 text on black | 4.90:1 | AA | Lc -32.3 | Non-text elements, placeholder text |
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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F8
oklch(93.5% 0.021 274)
-
Step 200
200
#D1D8F3
oklch(88.5% 0.038 274.1)
-
Step 300
300
#B3BEEE
oklch(80.9% 0.069 274.7)
-
Step 400
400
#8C9BE5
oklch(70.7% 0.11 274.5)
-
Step 500
500
#7180DD
oklch(63% 0.14 274.7)
-
Step 600
600 (this color)
#6372D6
oklch(58.9% 0.152 274.3)
-
Step 700
700
#4A56B0
oklch(49.1% 0.142 274.2)
-
Step 800
800
#3D478E
oklch(42.8% 0.117 274.4)
-
Step 900
900
#333C71
oklch(37.6% 0.091 274)
-
Step 950
950
#1E2342
oklch(26.8% 0.058 274.9)
#6372D6 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) | #447FDA | 0.043 |
| Deuteranopia (no green cones) | #3676D4 | 0.047 |
| Tritanopia (no blue cones) | #2A889A | 0.135 |
| Achromatopsia (no color) | #7A7A7A | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6372D6
#6372D6
oklch(58.9% 0.152 274.3)
- #947B00
#947B00
oklch(58.9% 0.121 94.7)
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 #6372D6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.046
- Royal Blue #4169E1 ΔE 0.052
- Cornflower #6A79F7 ΔE 0.052
- Medium Slate Blue #7B68EE ΔE 0.056
- Light Indigo #6D5ACF ΔE 0.058
- Slate Blue #6A5ACD ΔE 0.058
- Soft Blue #6488EA ΔE 0.060
- Windows Blue #3778BF ΔE 0.062
Use #6372D6 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.