#575BCE
Closest named color: Iris (#6258C4). oklch(53.2% 0.174 277.2), rgb(87, 91, 206).
Aa
White text reads best on this color (5.53:1).
About this color
#575BCE is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.174 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.022 away. White text reads best on it, at 5.53:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.174) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.79:1 |
| White text | 5.53:1 |
Values
| HEX | #575BCE |
| RGB | rgb(87, 91, 206) |
| HSL | hsl(238, 55%, 57%) |
| OKLCH | oklch(53.2% 0.174 277.2) |
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 #575BCE | 5.53:1 | AA | Lc -82.6 | Fine for body text |
| Black text on #575BCE | 3.79:1 | AA large text | Lc 26.8 | Dividers and decoration only |
| #575BCE text on white | 5.53:1 | AA | Lc 77.3 | Fine for body text |
| #575BCE text on black | 3.79:1 | AA large text | Lc -24.5 | 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
#E6E9F9
oklch(93.6% 0.022 277.5)
-
Step 200
200
#D1D7F6
oklch(88.4% 0.043 276.8)
-
Step 300
300
#B3BDF4
oklch(81% 0.079 276.5)
-
Step 400
400
#8D98EE
oklch(70.6% 0.126 277.1)
-
Step 500
500
#737CE8
oklch(63% 0.16 277.2)
-
Step 600
600 (this color)
#575BCE
oklch(53.2% 0.174 277.2)
-
Step 700
700
#4D51BA
oklch(49.1% 0.162 277)
-
Step 800
800
#3F4396
oklch(42.7% 0.134 277)
-
Step 900
900
#353978
oklch(37.6% 0.106 277.3)
-
Step 950
950
#1F2246
oklch(27% 0.066 277.4)
#575BCE 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) | #006DD2 | 0.069 |
| Deuteranopia (no green cones) | #0064CC | 0.065 |
| Tritanopia (no blue cones) | #04768C | 0.152 |
| Achromatopsia (no color) | #686868 | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #575BCE
#575BCE
oklch(53.2% 0.174 277.2)
- #7E6C00
#7E6C00
oklch(53.2% 0.11 97.6)
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 #575BCE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.022
- Dark Periwinkle #665FD1 ΔE 0.025
- Slate Blue #6A5ACD ΔE 0.028
- Warm Blue #4B57DB ΔE 0.028
- Light Indigo #6D5ACF ΔE 0.033
- Royal Blue #4169E1 ΔE 0.046
- Neon Blue #4361EE ΔE 0.054
- Bluey Purple #6241C7 ΔE 0.058
Use #575BCE 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.