#615CB1
Closest named color: Iris (#6258C4). oklch(52.1% 0.131 283.5), rgb(97, 92, 177).
Aa
White text reads best on this color (5.71:1).
About this color
#615CB1 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 52%, its chroma 0.131 and its hue 284°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.033 away. White text reads best on it, at 5.71:1.
| Hue family | Purples |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.131) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.67:1 |
| White text | 5.71:1 |
Values
| HEX | #615CB1 |
| RGB | rgb(97, 92, 177) |
| HSL | hsl(244, 35%, 53%) |
| OKLCH | oklch(52.1% 0.131 283.5) |
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 #615CB1 | 5.71:1 | AA | Lc -83.7 | Fine for body text |
| Black text on #615CB1 | 3.67:1 | AA large text | Lc 25.6 | Dividers and decoration only |
| #615CB1 text on white | 5.71:1 | AA | Lc 78.4 | Fine for body text |
| #615CB1 text on black | 3.67:1 | AA large text | Lc -23.4 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E8E9F6
oklch(93.7% 0.018 282.5)
-
Step 200
200
#D5D7F0
oklch(88.5% 0.034 282)
-
Step 300
300
#BBBCE9
oklch(81% 0.063 283.9)
-
Step 400
400
#9898DE
oklch(70.7% 0.102 283.5)
-
Step 500
500
#807DD5
oklch(63.1% 0.13 283.6)
-
Step 600
600
#6A65C2
oklch(55.6% 0.141 283.3)
-
Step 700
700 (this color)
#615CB1
oklch(52.1% 0.131 283.5)
-
Step 800
800
#494488
oklch(42.7% 0.11 284.1)
-
Step 900
900
#3C3A6C
oklch(37.6% 0.084 283.4)
-
Step 950
950
#232240
oklch(26.9% 0.055 283.6)
#615CB1 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) | #3969B4 | 0.055 |
| Deuteranopia (no green cones) | #3564AF | 0.056 |
| Tritanopia (no blue cones) | #476E7E | 0.112 |
| Achromatopsia (no color) | #666666 | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #615CB1
#615CB1
oklch(52.1% 0.131 283.5)
- #756B00
#756B00
oklch(52.1% 0.11 103.1)
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 #615CB1, closest first.
No curated palette has a color within ΔE 0.04 of #615CB1.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.033
- Slate Blue #6A5ACD ΔE 0.047
- Dark Periwinkle #665FD1 ΔE 0.050
- Light Indigo #6D5ACF ΔE 0.051
- French Blue #436BAD ΔE 0.053
- Dusky Blue #475F94 ΔE 0.062
- Mid Blue #276AB3 ΔE 0.069
- Twilight #4E518B ΔE 0.072
Use #615CB1 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.