#7551B8
Closest named color: Iris (#6258C4). oklch(52.4% 0.157 296.8), rgb(117, 81, 184).
Aa
White text reads best on this color (5.79:1).
About this color
#7551B8 is a medium-dark, vivid purple. In OKLCH its lightness is 52%, its chroma 0.157 and its hue 297°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.038 away. White text reads best on it, at 5.79:1.
| Hue family | Purples |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.157) |
| Temperature | in between |
| Nearest name | Iris (#6258C4) |
| Black text | 3.62:1 |
| White text | 5.79:1 |
Values
| HEX | #7551B8 |
| RGB | rgb(117, 81, 184) |
| HSL | hsl(261, 42%, 52%) |
| OKLCH | oklch(52.4% 0.157 296.8) |
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 #7551B8 | 5.79:1 | AA | Lc -83.9 | Fine for body text |
| Black text on #7551B8 | 3.62:1 | AA large text | Lc 25.4 | Dividers and decoration only |
| #7551B8 text on white | 5.79:1 | AA | Lc 78.7 | Fine for body text |
| #7551B8 text on black | 3.62:1 | AA large text | Lc -23.1 | 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 600.
-
Step 50
50
#F6F4FB
oklch(97.1% 0.009 299.2)
-
Step 100
100
#EBE7F6
oklch(93.5% 0.021 298.2)
-
Step 200
200
#DBD4F1
oklch(88.4% 0.04 296.6)
-
Step 300
300
#C5B8E9
oklch(81% 0.07 297)
-
Step 400
400
#A891DF
oklch(70.7% 0.114 297)
-
Step 500
500
#9374D5
oklch(63% 0.144 296.8)
-
Step 600
600 (this color)
#7551B8
oklch(52.4% 0.157 296.8)
-
Step 700
700
#6B4AA8
oklch(49.2% 0.146 296.9)
-
Step 800
800
#573D88
oklch(42.7% 0.121 297)
-
Step 900
900
#47356D
oklch(37.7% 0.094 296.4)
-
Step 950
950
#2A1F40
oklch(27% 0.061 297.6)
#7551B8 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) | #2166BB | 0.107 |
| Deuteranopia (no green cones) | #2E64B6 | 0.099 |
| Tritanopia (no blue cones) | #65667D | 0.122 |
| Achromatopsia (no color) | #656565 | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #7551B8
#7551B8
oklch(52.4% 0.157 296.8)
- #667200
#667200
oklch(52.4% 0.121 116.8)
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 #7551B8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.038
- Slate Blue #6A5ACD ΔE 0.040
- Light Indigo #6D5ACF ΔE 0.041
- Dark Periwinkle #665FD1 ΔE 0.052
- Deep Lavender #8D5EB7 ΔE 0.055
- Bluey Purple #6241C7 ΔE 0.057
- Purply #983FB2 ΔE 0.070
- Purpley #8756E4 ΔE 0.074
Use #7551B8 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.