#576AEB
Closest named color: Royal Blue (#4169E1). oklch(58.1% 0.194 272.5), rgb(87, 106, 235).
Aa
Black text reads best on this color (4.66:1).
About this color
#576AEB is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.194 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.030 away. Black text reads best on it, at 4.66:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.194) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.66:1 |
| White text | 4.50:1 |
Values
| HEX | #576AEB |
| RGB | rgb(87, 106, 235) |
| HSL | hsl(232, 79%, 63%) |
| OKLCH | oklch(58.1% 0.194 272.5) |
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 #576AEB | 4.50:1 | AA | Lc -76.3 | Fine for body text |
| Black text on #576AEB | 4.66:1 | AA | Lc 33.2 | Non-text elements, placeholder text |
| #576AEB text on white | 4.50:1 | AA | Lc 70.8 | Content text, not long reading |
| #576AEB text on black | 4.66:1 | AA | Lc -30.8 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E4E9FB
oklch(93.6% 0.025 273.5)
-
Step 200
200
#CED8FA
oklch(88.5% 0.048 272.4)
-
Step 300
300
#ADBEFA
oklch(81% 0.087 272.1)
-
Step 400
400
#8399F7
oklch(70.6% 0.14 272.4)
-
Step 500
500
#677DF4
oklch(63.2% 0.178 272.4)
-
Step 600
600 (this color)
#576AEB
oklch(58.1% 0.194 272.5)
-
Step 700
700
#4250C5
oklch(49.1% 0.181 272.6)
-
Step 800
800
#36439F
oklch(42.8% 0.149 272.4)
-
Step 900
900
#2E397E
oklch(37.6% 0.117 272.7)
-
Step 950
950
#1B224A
oklch(27% 0.074 273)
#576AEB 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) | #007DEF | 0.063 |
| Deuteranopia (no green cones) | #0070E8 | 0.056 |
| Tritanopia (no blue cones) | #0089A0 | 0.164 |
| Achromatopsia (no color) | #777777 | 0.194 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #576AEB
#576AEB
oklch(58.1% 0.194 272.5)
- #937700
#937700
oklch(57.9% 0.119 92.3)
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 #576AEB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.030
- Neon Blue #4361EE ΔE 0.034
- Dark Periwinkle #665FD1 ΔE 0.048
- Cornflower #6A79F7 ΔE 0.049
- Medium Slate Blue #7B68EE ΔE 0.050
- Warm Blue #4B57DB ΔE 0.054
- Cerulean Blue #056EEE ΔE 0.054
- Clear Blue #247AFD ΔE 0.055
Use #576AEB 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.