#576EE0
Closest named color: Royal Blue (#4169E1). oklch(58% 0.174 271.4), rgb(87, 110, 224).
Aa
Black text reads best on this color (4.71:1).
About this color
#576EE0 is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.174 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.029 away. Black text reads best on it, at 4.71:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.174) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.71:1 |
| White text | 4.45:1 |
Values
| HEX | #576EE0 |
| RGB | rgb(87, 110, 224) |
| HSL | hsl(230, 69%, 61%) |
| OKLCH | oklch(58% 0.174 271.4) |
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 #576EE0 | 4.45:1 | AA large text | Lc -76.1 | Fine for body text |
| Black text on #576EE0 | 4.71:1 | AA | Lc 33.5 | Non-text elements, placeholder text |
| #576EE0 text on white | 4.45:1 | AA large text | Lc 70.6 | Content text, not long reading |
| #576EE0 text on black | 4.71:1 | AA | Lc -31.1 | Non-text elements, placeholder text |
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
#E4E9FA
oklch(93.5% 0.024 272.8)
-
Step 200
200
#CED8F7
oklch(88.4% 0.044 271.3)
-
Step 300
300
#AEBEF4
oklch(80.8% 0.079 271.7)
-
Step 400
400
#849BEF
oklch(70.7% 0.126 271.3)
-
Step 500
500
#6780E9
oklch(63.1% 0.16 271.1)
-
Step 600
600 (this color)
#576EE0
oklch(58% 0.174 271.4)
-
Step 700
700
#4254BB
oklch(49% 0.163 271.6)
-
Step 800
800
#364697
oklch(42.8% 0.133 271.3)
-
Step 900
900
#2E3B78
oklch(37.6% 0.105 271.5)
-
Step 950
950
#1B2347
oklch(27% 0.068 271.8)
#576EE0 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) | #2D7EE4 | 0.049 |
| Deuteranopia (no green cones) | #0072DE | 0.055 |
| Tritanopia (no blue cones) | #00889C | 0.150 |
| Achromatopsia (no color) | #777777 | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #576EE0
#576EE0
oklch(58% 0.174 271.4)
- #947700
#947700
oklch(58% 0.119 91.7)
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 #576EE0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.029
- Dark Periwinkle #665FD1 ΔE 0.043
- Neon Blue #4361EE ΔE 0.047
- Cornflower #6A79F7 ΔE 0.051
- Medium Slate Blue #7B68EE ΔE 0.055
- Slate Blue #6A5ACD ΔE 0.056
- Light Indigo #6D5ACF ΔE 0.057
- Cerulean Blue #056EEE ΔE 0.058
Use #576EE0 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.