#575CC0
Closest named color: Iris (#6258C4). oklch(52.3% 0.154 277.5), rgb(87, 92, 192).
Aa
White text reads best on this color (5.67:1).
About this color
#575CC0 is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.154 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.019 away. White text reads best on it, at 5.67:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.154) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.69:1 |
| White text | 5.67:1 |
Values
| HEX | #575CC0 |
| RGB | rgb(87, 92, 192) |
| HSL | hsl(237, 45%, 55%) |
| OKLCH | oklch(52.3% 0.154 277.5) |
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 #575CC0 | 5.67:1 | AA | Lc -83.4 | Fine for body text |
| Black text on #575CC0 | 3.69:1 | AA large text | Lc 25.9 | Dividers and decoration only |
| #575CC0 text on white | 5.67:1 | AA | Lc 78.1 | Fine for body text |
| #575CC0 text on black | 3.69:1 | AA large text | Lc -23.6 | 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
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E6E9F9
oklch(93.6% 0.022 277.5)
-
Step 200
200
#D2D7F5
oklch(88.5% 0.042 278)
-
Step 300
300
#B4BDF1
oklch(80.9% 0.074 277)
-
Step 400
400
#8F99EA
oklch(70.8% 0.119 277.5)
-
Step 500
500
#757DE3
oklch(63.1% 0.152 277.7)
-
Step 600
600
#5F64D1
oklch(55.6% 0.165 277.6)
-
Step 700
700 (this color)
#575CC0
oklch(52.3% 0.154 277.5)
-
Step 800
800
#404493
oklch(42.7% 0.128 277.4)
-
Step 900
900
#363A75
oklch(37.7% 0.099 277.6)
-
Step 950
950
#1F2244
oklch(26.8% 0.063 277.5)
#575CC0 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) | #266BC4 | 0.057 |
| Deuteranopia (no green cones) | #1463BE | 0.061 |
| Tritanopia (no blue cones) | #237385 | 0.135 |
| Achromatopsia (no color) | #676767 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #575CC0
#575CC0
oklch(52.3% 0.154 277.5)
- #7B6900
#7B6900
oklch(52.2% 0.108 97.3)
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 #575CC0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.019
- Slate Blue #6A5ACD ΔE 0.035
- Dark Periwinkle #665FD1 ΔE 0.035
- Light Indigo #6D5ACF ΔE 0.041
- Warm Blue #4B57DB ΔE 0.047
- French Blue #436BAD ΔE 0.057
- Royal Blue #4169E1 ΔE 0.060
- Bluey Purple #6241C7 ΔE 0.062
Use #575CC0 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.