#6171D2
Closest named color: Dark Periwinkle (#665FD1). oklch(58.3% 0.149 273.8), rgb(97, 113, 210).
Aa
Black text reads best on this color (4.80:1).
About this color
#6171D2 is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.149 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.044 away. Black text reads best on it, at 4.80:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.149) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.80:1 |
| White text | 4.37:1 |
Values
| HEX | #6171D2 |
| RGB | rgb(97, 113, 210) |
| HSL | hsl(232, 56%, 60%) |
| OKLCH | oklch(58.3% 0.149 273.8) |
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 #6171D2 | 4.37:1 | AA large text | Lc -75.6 | Fine for body text |
| Black text on #6171D2 | 4.80:1 | AA | Lc 34.0 | Non-text elements, placeholder text |
| #6171D2 text on white | 4.37:1 | AA large text | Lc 70.1 | Content text, not long reading |
| #6171D2 text on black | 4.80:1 | AA | Lc -31.6 | 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
#E5E9F7
oklch(93.5% 0.019 273.2)
-
Step 200
200
#D1D8F2
oklch(88.5% 0.037 273.7)
-
Step 300
300
#B3BEED
oklch(80.9% 0.068 274.5)
-
Step 400
400
#8C9BE3
oklch(70.6% 0.107 274.4)
-
Step 500
500
#7081DB
oklch(63% 0.136 273.8)
-
Step 600
600 (this color)
#6171D2
oklch(58.3% 0.149 273.8)
-
Step 700
700
#4A57AE
oklch(49.2% 0.138 273.8)
-
Step 800
800
#3C478D
oklch(42.6% 0.116 273.8)
-
Step 900
900
#333C70
oklch(37.6% 0.089 273.9)
-
Step 950
950
#1E2442
oklch(27.1% 0.056 273.5)
#6171D2 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) | #457ED6 | 0.041 |
| Deuteranopia (no green cones) | #3874D0 | 0.043 |
| Tritanopia (no blue cones) | #298697 | 0.132 |
| Achromatopsia (no color) | #797979 | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6171D2
#6171D2
oklch(58.3% 0.149 273.8)
- #937900
#937900
oklch(58.4% 0.12 93.8)
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 #6171D2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.044
- Royal Blue #4169E1 ΔE 0.051
- Slate Blue #6A5ACD ΔE 0.056
- Light Indigo #6D5ACF ΔE 0.056
- Windows Blue #3778BF ΔE 0.057
- Cornflower #6A79F7 ΔE 0.059
- Medium Slate Blue #7B68EE ΔE 0.061
- Iris #6258C4 ΔE 0.063
Use #6171D2 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.