#576BDE
Closest named color: Royal Blue (#4169E1). oklch(57.3% 0.176 272.3), rgb(87, 107, 222).
Aa
White text reads best on this color (4.60:1).
About this color
#576BDE is a medium-dark, vivid blue. In OKLCH its lightness is 57%, its chroma 0.176 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.026 away. White text reads best on it, at 4.60:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.176) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.56:1 |
| White text | 4.60:1 |
Values
| HEX | #576BDE |
| RGB | rgb(87, 107, 222) |
| HSL | hsl(231, 67%, 61%) |
| OKLCH | oklch(57.3% 0.176 272.3) |
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 #576BDE | 4.60:1 | AA | Lc -77.1 | Fine for body text |
| Black text on #576BDE | 4.56:1 | AA | Lc 32.4 | Non-text elements, placeholder text |
| #576BDE text on white | 4.60:1 | AA | Lc 71.6 | Content text, not long reading |
| #576BDE text on black | 4.56:1 | AA | Lc -30.0 | 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
#CFD8F7
oklch(88.5% 0.044 272.7)
-
Step 300
300
#AFBEF4
oklch(80.9% 0.078 272.5)
-
Step 400
400
#869BEF
oklch(70.8% 0.125 272.2)
-
Step 500
500
#697FEA
oklch(63.1% 0.162 272.3)
-
Step 600
600 (this color)
#576BDE
oklch(57.3% 0.176 272.3)
-
Step 700
700
#4354BB
oklch(49.1% 0.162 272)
-
Step 800
800
#374598
oklch(42.7% 0.136 272.2)
-
Step 900
900
#2F3B79
oklch(37.7% 0.106 272.1)
-
Step 950
950
#1C2347
oklch(27.1% 0.067 272.9)
#576BDE 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) | #267BE2 | 0.052 |
| Deuteranopia (no green cones) | #006FDC | 0.057 |
| Tritanopia (no blue cones) | #00869A | 0.151 |
| Achromatopsia (no color) | #757575 | 0.176 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #576BDE
#576BDE
oklch(57.3% 0.176 272.3)
- #917500
#917500
oklch(57.3% 0.117 92.1)
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 #576BDE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.026
- Dark Periwinkle #665FD1 ΔE 0.037
- Neon Blue #4361EE ΔE 0.044
- Slate Blue #6A5ACD ΔE 0.050
- Light Indigo #6D5ACF ΔE 0.051
- Warm Blue #4B57DB ΔE 0.052
- Medium Slate Blue #7B68EE ΔE 0.056
- Cornflower #6A79F7 ΔE 0.057
Use #576BDE 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.