#6B71C8
Closest named color: Dark Periwinkle (#665FD1). oklch(58.4% 0.132 278.5), rgb(107, 113, 200).
Aa
Black text reads best on this color (4.82:1).
About this color
#6B71C8 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 58%, its chroma 0.132 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.051 away. Black text reads best on it, at 4.82:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.132) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.82:1 |
| White text | 4.35:1 |
Values
| HEX | #6B71C8 |
| RGB | rgb(107, 113, 200) |
| HSL | hsl(236, 46%, 60%) |
| OKLCH | oklch(58.4% 0.132 278.5) |
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 #6B71C8 | 4.35:1 | AA large text | Lc -75.5 | Fine for body text |
| Black text on #6B71C8 | 4.82:1 | AA | Lc 34.0 | Non-text elements, placeholder text |
| #6B71C8 text on white | 4.35:1 | AA large text | Lc 70.0 | Content text, not long reading |
| #6B71C8 text on black | 4.82:1 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E7E9F6
oklch(93.6% 0.018 279.1)
-
Step 200
200
#D4D7EF
oklch(88.4% 0.033 280)
-
Step 300
300
#B7BDE7
oklch(80.8% 0.06 278.6)
-
Step 400
400
#939BDB
oklch(70.8% 0.094 278.2)
-
Step 500
500
#7981D2
oklch(63.2% 0.122 278)
-
Step 600
600 (this color)
#6B71C8
oklch(58.4% 0.132 278.5)
-
Step 700
700
#5257A5
oklch(49.2% 0.123 278.1)
-
Step 800
800
#434785
oklch(42.6% 0.102 278.4)
-
Step 900
900
#393C6B
oklch(37.7% 0.08 279.1)
-
Step 950
950
#21233F
oklch(26.9% 0.052 279.2)
#6B71C8 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) | #4F7DCB | 0.042 |
| Deuteranopia (no green cones) | #4876C6 | 0.043 |
| Tritanopia (no blue cones) | #4A8393 | 0.115 |
| Achromatopsia (no color) | #797979 | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B71C8
#6B71C8
oklch(58.4% 0.132 278.5)
- #8E7B00
#8E7B00
oklch(58.3% 0.121 98.4)
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 #6B71C8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.051
- Slate Blue #6A5ACD ΔE 0.059
- Light Indigo #6D5ACF ΔE 0.059
- Windows Blue #3778BF ΔE 0.061
- Iris #6258C4 ΔE 0.066
- Deep Lilac #966EBD ΔE 0.067
- Medium Purple #9370DB ΔE 0.068
- Medium Slate Blue #7B68EE ΔE 0.068
Use #6B71C8 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.