#575ED4
Closest named color: Dark Periwinkle (#665FD1). oklch(54.1% 0.178 276.1), rgb(87, 94, 212).
Aa
White text reads best on this color (5.30:1).
About this color
#575ED4 is a medium-dark, vivid blue. In OKLCH its lightness is 54%, its chroma 0.178 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.022 away. White text reads best on it, at 5.30:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.178) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 3.95:1 |
| White text | 5.30:1 |
Values
| HEX | #575ED4 |
| RGB | rgb(87, 94, 212) |
| HSL | hsl(237, 59%, 59%) |
| OKLCH | oklch(54.1% 0.178 276.1) |
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 #575ED4 | 5.30:1 | AA | Lc -81.4 | Fine for body text |
| Black text on #575ED4 | 3.95:1 | AA large text | Lc 28.0 | Dividers and decoration only |
| #575ED4 text on white | 5.30:1 | AA | Lc 76.0 | Fine for body text |
| #575ED4 text on black | 3.95:1 | AA large text | Lc -25.7 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9FA
oklch(93.6% 0.023 275.4)
-
Step 200
200
#D1D7F7
oklch(88.5% 0.044 277.1)
-
Step 300
300
#B2BDF5
oklch(80.9% 0.08 275.8)
-
Step 400
400
#8B98F0
oklch(70.6% 0.129 276.2)
-
Step 500
500
#717CEB
oklch(63.1% 0.165 276.3)
-
Step 600
600 (this color)
#575ED4
oklch(54.1% 0.178 276.1)
-
Step 700
700
#4B51BC
oklch(49.1% 0.165 276)
-
Step 800
800
#3D4398
oklch(42.7% 0.137 275.9)
-
Step 900
900
#343979
oklch(37.6% 0.107 276.6)
-
Step 950
950
#1E2247
oklch(27% 0.068 276.2)
#575ED4 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) | #0071D8 | 0.068 |
| Deuteranopia (no green cones) | #0066D2 | 0.063 |
| Tritanopia (no blue cones) | #007A90 | 0.155 |
| Achromatopsia (no color) | #6B6B6B | 0.179 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #575ED4
#575ED4
oklch(54.1% 0.178 276.1)
- #826E00
#826E00
oklch(54.1% 0.111 96.5)
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 #575ED4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.022
- Warm Blue #4B57DB ΔE 0.027
- Slate Blue #6A5ACD ΔE 0.030
- Iris #6258C4 ΔE 0.031
- Light Indigo #6D5ACF ΔE 0.033
- Royal Blue #4169E1 ΔE 0.037
- Neon Blue #4361EE ΔE 0.045
- Azul #1D5DEC ΔE 0.066
Use #575ED4 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.