#6151AC
Closest named color: Iris (#6258C4). oklch(49.7% 0.14 288.3), rgb(97, 81, 172).
Aa
White text reads best on this color (6.40:1).
About this color
#6151AC is a medium-dark, moderately saturated purple. In OKLCH its lightness is 50%, its chroma 0.140 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.040 away. White text reads best on it, at 6.40:1.
| Hue family | Purples |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.140) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.28:1 |
| White text | 6.40:1 |
Values
| HEX | #6151AC |
| RGB | rgb(97, 81, 172) |
| HSL | hsl(251, 36%, 50%) |
| OKLCH | oklch(49.7% 0.14 288.3) |
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 #6151AC | 6.40:1 | AA | Lc -86.7 | Fine for body text |
| Black text on #6151AC | 3.28:1 | AA large text | Lc 22.5 | Dividers and decoration only |
| #6151AC text on white | 6.40:1 | AA | Lc 81.6 | Fine for body text |
| #6151AC text on black | 3.28:1 | AA large text | Lc -20.3 | 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
#F5F5FB
oklch(97.2% 0.008 286.3)
-
Step 100
100
#E9E8F7
oklch(93.6% 0.02 289.1)
-
Step 200
200
#D7D6F1
oklch(88.5% 0.037 287.3)
-
Step 300
300
#BEBAEB
oklch(80.9% 0.069 288.5)
-
Step 400
400
#9E95E0
oklch(70.7% 0.108 288.8)
-
Step 500
500
#8779D7
oklch(63% 0.138 288.6)
-
Step 600
600
#7261C5
oklch(55.7% 0.15 288.4)
-
Step 700
700 (this color)
#6151AC
oklch(49.7% 0.14 288.3)
-
Step 800
800
#4E418A
oklch(42.7% 0.117 288.6)
-
Step 900
900
#40386E
oklch(37.7% 0.09 288.1)
-
Step 950
950
#252141
oklch(27% 0.058 287.5)
#6151AC 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) | #2761AF | 0.075 |
| Deuteranopia (no green cones) | #275DAA | 0.074 |
| Tritanopia (no blue cones) | #4B6477 | 0.115 |
| Achromatopsia (no color) | #5F5F5F | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6151AC
#6151AC
oklch(49.7% 0.14 288.3)
- #686600
#686600
oklch(49.6% 0.107 108.4)
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 #6151AC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.040
- Slate Blue #6A5ACD ΔE 0.057
- Bluey Purple #6241C7 ΔE 0.057
- Light Indigo #6D5ACF ΔE 0.061
- Twilight #4E518B ΔE 0.062
- Dark Periwinkle #665FD1 ΔE 0.065
- Dusky Blue #475F94 ΔE 0.068
- Blue With A Hint Of Purple #533CC6 ΔE 0.070
Use #6151AC 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.