#6373DE
Closest named color: Cornflower (#6A79F7). oklch(59.6% 0.162 274), rgb(99, 115, 222).
Aa
Black text reads best on this color (5.03:1).
About this color
#6373DE is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.162 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.041 away. Black text reads best on it, at 5.03:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.162) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.03:1 |
| White text | 4.16:1 |
Values
| HEX | #6373DE |
| RGB | rgb(99, 115, 222) |
| HSL | hsl(232, 65%, 63%) |
| OKLCH | oklch(59.6% 0.162 274) |
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 #6373DE | 4.16:1 | AA large text | Lc -74.0 | Content text, not long reading |
| Black text on #6373DE | 5.03:1 | AA | Lc 35.6 | Non-text elements, placeholder text |
| #6373DE text on white | 4.16:1 | AA large text | Lc 68.5 | Content text, not long reading |
| #6373DE text on black | 5.03:1 | AA | Lc -33.2 | 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 500.
-
Step 50
50
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9FA
oklch(93.6% 0.023 275.4)
-
Step 200
200
#D0D8F7
oklch(88.6% 0.044 274)
-
Step 300
300
#B0BDF5
oklch(80.8% 0.081 274.3)
-
Step 400
400
#889AEF
oklch(70.7% 0.126 273.7)
-
Step 500
500 (this color)
#6373DE
oklch(59.6% 0.162 274)
-
Step 600
600
#5664D8
oklch(55.5% 0.176 274)
-
Step 700
700
#4752BC
oklch(49% 0.165 274.1)
-
Step 800
800
#3A4498
oklch(42.7% 0.136 274)
-
Step 900
900
#313A79
oklch(37.6% 0.107 274)
-
Step 950
950
#1D2347
oklch(27.1% 0.067 274)
#6373DE 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) | #3F82E2 | 0.048 |
| Deuteranopia (no green cones) | #2E77DC | 0.051 |
| Tritanopia (no blue cones) | #1E8B9E | 0.144 |
| Achromatopsia (no color) | #7C7C7C | 0.162 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6373DE
#6373DE
oklch(59.6% 0.162 274)
- #977D00
#977D00
oklch(59.7% 0.122 94.3)
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 #6373DE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.041
- Medium Slate Blue #7B68EE ΔE 0.048
- Royal Blue #4169E1 ΔE 0.050
- Dark Periwinkle #665FD1 ΔE 0.050
- Soft Blue #6488EA ΔE 0.055
- Light Indigo #6D5ACF ΔE 0.062
- Slate Blue #6A5ACD ΔE 0.063
- Neon Blue #4361EE ΔE 0.068
Use #6373DE 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.