#615FD8
Closest named color: Dark Periwinkle (#665FD1). oklch(55.3% 0.18 279.5), rgb(97, 95, 216).
Aa
White text reads best on this color (5.07:1).
About this color
#615FD8 is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.180 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.013 away. White text reads best on it, at 5.07:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.180) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.13:1 |
| White text | 5.07:1 |
Values
| HEX | #615FD8 |
| RGB | rgb(97, 95, 216) |
| HSL | hsl(241, 61%, 61%) |
| OKLCH | oklch(55.3% 0.18 279.5) |
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 #615FD8 | 5.07:1 | AA | Lc -80.1 | Fine for body text |
| Black text on #615FD8 | 4.13:1 | AA large text | Lc 29.4 | Dividers and decoration only |
| #615FD8 text on white | 5.07:1 | AA | Lc 74.7 | Content text, not long reading |
| #615FD8 text on black | 4.13:1 | AA large text | Lc -27.0 | 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
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E6E9FA
oklch(93.7% 0.023 277.9)
-
Step 200
200
#D2D7F7
oklch(88.5% 0.044 278.4)
-
Step 300
300
#B5BCF5
oklch(81% 0.081 279)
-
Step 400
400
#9097F0
oklch(70.8% 0.13 279.1)
-
Step 500
500
#777AEB
oklch(63.1% 0.166 279.4)
-
Step 600
600 (this color)
#615FD8
oklch(55.3% 0.18 279.5)
-
Step 700
700
#514EBC
oklch(49% 0.168 279.4)
-
Step 800
800
#424198
oklch(42.7% 0.139 279.3)
-
Step 900
900
#373879
oklch(37.7% 0.108 279.2)
-
Step 950
950
#202147
oklch(26.9% 0.069 279.5)
#615FD8 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) | #0073DC | 0.079 |
| Deuteranopia (no green cones) | #006AD5 | 0.076 |
| Tritanopia (no blue cones) | #257B92 | 0.156 |
| Achromatopsia (no color) | #6E6E6E | 0.181 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #615FD8
#615FD8
oklch(55.3% 0.18 279.5)
- #837300
#837300
oklch(55.3% 0.115 99.6)
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 #615FD8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.013
- Slate Blue #6A5ACD ΔE 0.023
- Light Indigo #6D5ACF ΔE 0.024
- Iris #6258C4 ΔE 0.034
- Warm Blue #4B57DB ΔE 0.038
- Royal Blue #4169E1 ΔE 0.043
- Neon Blue #4361EE ΔE 0.049
- Medium Slate Blue #7B68EE ΔE 0.057
Use #615FD8 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.