#7557BC
Closest named color: Slate Blue (#6A5ACD). oklch(53.7% 0.153 294.4), rgb(117, 87, 188).
Aa
White text reads best on this color (5.46:1).
About this color
#7557BC is a medium-dark, vivid purple. In OKLCH its lightness is 54%, its chroma 0.153 and its hue 294°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Slate Blue (#6A5ACD), ΔE 0.032 away. White text reads best on it, at 5.46:1.
| Hue family | Purples |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.153) |
| Temperature | in between |
| Nearest name | Slate Blue (#6A5ACD) |
| Black text | 3.84:1 |
| White text | 5.46:1 |
Values
| HEX | #7557BC |
| RGB | rgb(117, 87, 188) |
| HSL | hsl(258, 43%, 54%) |
| OKLCH | oklch(53.7% 0.153 294.4) |
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 #7557BC | 5.46:1 | AA | Lc -82.3 | Fine for body text |
| Black text on #7557BC | 3.84:1 | AA large text | Lc 27.1 | Dividers and decoration only |
| #7557BC text on white | 5.46:1 | AA | Lc 77.0 | Fine for body text |
| #7557BC text on black | 3.84:1 | AA large text | Lc -24.8 | 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
#EAE8F6
oklch(93.7% 0.019 292.6)
-
Step 200
200
#DAD5F1
oklch(88.6% 0.038 293.8)
-
Step 300
300
#C3B9E9
oklch(81% 0.068 294.4)
-
Step 400
400
#A593DE
oklch(70.8% 0.109 294.5)
-
Step 500
500
#9076D5
oklch(63.1% 0.141 294.6)
-
Step 600
600 (this color)
#7557BC
oklch(53.7% 0.153 294.4)
-
Step 700
700
#674CA8
oklch(49.1% 0.142 294.1)
-
Step 800
800
#543F88
oklch(42.7% 0.117 294.1)
-
Step 900
900
#45366D
oklch(37.7% 0.092 294.1)
-
Step 950
950
#282040
oklch(27% 0.059 293.6)
#7557BC 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) | #2B6ABF | 0.097 |
| Deuteranopia (no green cones) | #3368BA | 0.091 |
| Tritanopia (no blue cones) | #646C81 | 0.123 |
| Achromatopsia (no color) | #696969 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #7557BC
#7557BC
oklch(53.7% 0.153 294.4)
- #6D7500
#6D7500
oklch(53.7% 0.121 114.4)
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 #7557BC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Blue #6A5ACD ΔE 0.032
- Light Indigo #6D5ACF ΔE 0.032
- Iris #6258C4 ΔE 0.033
- Dark Periwinkle #665FD1 ΔE 0.042
- Deep Lavender #8D5EB7 ΔE 0.048
- Bluey Purple #6241C7 ΔE 0.065
- Purpley #8756E4 ΔE 0.068
- Amethyst #9B5FC0 ΔE 0.071
Use #7557BC 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.