#6173DD
Closest named color: Cornflower (#6A79F7). oklch(59.4% 0.161 273.3), rgb(97, 115, 221).
Aa
Black text reads best on this color (5.00:1).
About this color
#6173DD is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.161 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.043 away. Black text reads best on it, at 5.00:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.161) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.00:1 |
| White text | 4.19:1 |
Values
| HEX | #6173DD |
| RGB | rgb(97, 115, 221) |
| HSL | hsl(231, 65%, 62%) |
| OKLCH | oklch(59.4% 0.161 273.3) |
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 #6173DD | 4.19:1 | AA large text | Lc -74.2 | Content text, not long reading |
| Black text on #6173DD | 5.00:1 | AA | Lc 35.4 | Non-text elements, placeholder text |
| #6173DD text on white | 4.19:1 | AA large text | Lc 68.7 | Content text, not long reading |
| #6173DD text on black | 5.00:1 | AA | Lc -33.0 | 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
#CFD8F7
oklch(88.5% 0.044 272.7)
-
Step 300
300
#B0BEF4
oklch(81% 0.078 273.3)
-
Step 400
400
#879AEF
oklch(70.7% 0.126 273.2)
-
Step 500
500 (this color)
#6173DD
oklch(59.4% 0.161 273.3)
-
Step 600
600
#5565D8
oklch(55.6% 0.175 273.3)
-
Step 700
700
#4653BB
oklch(49.1% 0.163 273.5)
-
Step 800
800
#394597
oklch(42.7% 0.134 273.1)
-
Step 900
900
#303B79
oklch(37.8% 0.106 272.8)
-
Step 950
950
#1C2347
oklch(27.1% 0.067 272.9)
#6173DD 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) | #4081E1 | 0.045 |
| Deuteranopia (no green cones) | #2D77DB | 0.050 |
| Tritanopia (no blue cones) | #158B9D | 0.144 |
| Achromatopsia (no color) | #7C7C7C | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6173DD
#6173DD
oklch(59.4% 0.161 273.3)
- #977C00
#977C00
oklch(59.4% 0.122 93.6)
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 #6173DD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.043
- Royal Blue #4169E1 ΔE 0.048
- Dark Periwinkle #665FD1 ΔE 0.050
- Medium Slate Blue #7B68EE ΔE 0.051
- Soft Blue #6488EA ΔE 0.055
- Light Indigo #6D5ACF ΔE 0.062
- Slate Blue #6A5ACD ΔE 0.063
- Neon Blue #4361EE ΔE 0.067
Use #6173DD 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.