#7173DD
Closest named color: Medium Slate Blue (#7B68EE). oklch(60.5% 0.158 279.8), rgb(113, 115, 221).
Aa
Black text reads best on this color (5.19:1).
About this color
#7173DD is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.158 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Slate Blue (#7B68EE), ΔE 0.040 away. Black text reads best on it, at 5.19:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.158) |
| Temperature | cool |
| Nearest name | Medium Slate Blue (#7B68EE) |
| Black text | 5.19:1 |
| White text | 4.03:1 |
Values
| HEX | #7173DD |
| RGB | rgb(113, 115, 221) |
| HSL | hsl(239, 61%, 65%) |
| OKLCH | oklch(60.5% 0.158 279.8) |
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 #7173DD | 4.03:1 | AA large text | Lc -72.9 | Content text, not long reading |
| Black text on #7173DD | 5.19:1 | AA | Lc 36.6 | Non-text elements, placeholder text |
| #7173DD text on white | 4.03:1 | AA large text | Lc 67.4 | Content text, not long reading |
| #7173DD text on black | 5.19:1 | AA | Lc -34.2 | 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
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E6E9F9
oklch(93.6% 0.022 277.5)
-
Step 200
200
#D3D7F6
oklch(88.6% 0.043 279.7)
-
Step 300
300
#B6BCF2
oklch(80.9% 0.076 279.6)
-
Step 400
400
#9197EC
oklch(70.6% 0.124 279.6)
-
Step 500
500 (this color)
#7173DD
oklch(60.5% 0.158 279.8)
-
Step 600
600
#6361D4
oklch(55.5% 0.172 280)
-
Step 700
700
#5250B8
oklch(49.1% 0.16 279.6)
-
Step 800
800
#434295
oklch(42.7% 0.133 279.7)
-
Step 900
900
#383976
oklch(37.7% 0.102 279.6)
-
Step 950
950
#212245
oklch(27.1% 0.064 280)
#7173DD 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) | #4483E1 | 0.059 |
| Deuteranopia (no green cones) | #3B7ADB | 0.060 |
| Tritanopia (no blue cones) | #488A9D | 0.138 |
| Achromatopsia (no color) | #7E7E7E | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #7173DD
#7173DD
oklch(60.5% 0.158 279.8)
- #948200
#948200
oklch(60.5% 0.125 99.5)
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 #7173DD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Slate Blue #7B68EE ΔE 0.040
- Cornflower #6A79F7 ΔE 0.040
- Medium Purple #9370DB ΔE 0.051
- Soft Blue #6488EA ΔE 0.054
- Dark Periwinkle #665FD1 ΔE 0.055
- Light Indigo #6D5ACF ΔE 0.063
- Slate Blue #6A5ACD ΔE 0.065
- Royal Blue #4169E1 ΔE 0.068
Use #7173DD 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.