#6851BC
Closest named color: Iris (#6258C4). oklch(51.4% 0.161 289.4), rgb(104, 81, 188).
Aa
White text reads best on this color (6.01:1).
About this color
#6851BC is a medium-dark, vivid purple. In OKLCH its lightness is 51%, its chroma 0.161 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.021 away. White text reads best on it, at 6.01:1.
| Hue family | Purples |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.161) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.49:1 |
| White text | 6.01:1 |
Values
| HEX | #6851BC |
| RGB | rgb(104, 81, 188) |
| HSL | hsl(253, 44%, 53%) |
| OKLCH | oklch(51.4% 0.161 289.4) |
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 #6851BC | 6.01:1 | AA | Lc -84.9 | Fine for body text |
| Black text on #6851BC | 3.49:1 | AA large text | Lc 24.3 | Dividers and decoration only |
| #6851BC text on white | 6.01:1 | AA | Lc 79.7 | Fine for body text |
| #6851BC text on black | 3.49:1 | AA large text | Lc -22.1 | Dividers and decoration only |
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 700.
-
Step 50
50
#F5F4FC
oklch(97% 0.011 292)
-
Step 100
100
#E9E8F8
oklch(93.6% 0.021 288.9)
-
Step 200
200
#D8D5F5
oklch(88.5% 0.044 289.8)
-
Step 300
300
#BFB9F0
oklch(80.9% 0.077 289.6)
-
Step 400
400
#9F92E9
oklch(70.6% 0.126 289.6)
-
Step 500
500
#8975E2
oklch(63.1% 0.159 289.5)
-
Step 600
600
#745BD0
oklch(55.6% 0.173 289.4)
-
Step 700
700 (this color)
#6851BC
oklch(51.4% 0.161 289.4)
-
Step 800
800
#4F3D92
oklch(42.6% 0.134 289.2)
-
Step 900
900
#423574
oklch(37.7% 0.104 290)
-
Step 950
950
#262044
oklch(27% 0.065 288.9)
#6851BC 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) | #0F65C0 | 0.095 |
| Deuteranopia (no green cones) | #1460BA | 0.093 |
| Tritanopia (no blue cones) | #4F697E | 0.134 |
| Achromatopsia (no color) | #636363 | 0.162 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6851BC
#6851BC
oklch(51.4% 0.161 289.4)
- #6C6C00
#6C6C00
oklch(51.4% 0.112 109.8)
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 #6851BC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.021
- Slate Blue #6A5ACD ΔE 0.033
- Light Indigo #6D5ACF ΔE 0.036
- Bluey Purple #6241C7 ΔE 0.042
- Dark Periwinkle #665FD1 ΔE 0.044
- Blue With A Hint Of Purple #533CC6 ΔE 0.063
- Warm Blue #4B57DB ΔE 0.064
- Blurple #5539CC ΔE 0.068
Use #6851BC 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.