#578FF8
Closest named color: Chefchaouen Blue (#4895EF). oklch(66.2% 0.167 261.8), rgb(87, 143, 248).
Aa
Black text reads best on this color (6.68:1).
About this color
#578FF8 is a medium-light, vivid blue. In OKLCH its lightness is 66%, its chroma 0.167 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.025 away. Black text reads best on it, at 6.68:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.167) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 6.68:1 |
| White text | 3.13:1 |
Values
| HEX | #578FF8 |
| RGB | rgb(87, 143, 248) |
| HSL | hsl(219, 92%, 66%) |
| OKLCH | oklch(66.2% 0.167 261.8) |
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 #578FF8 | 3.13:1 | AA large text | Lc -63.6 | Content text, not long reading |
| Black text on #578FF8 | 6.68:1 | AA | Lc 45.9 | Large or bold text, headings |
| #578FF8 text on white | 3.13:1 | AA large text | Lc 58.2 | Large or bold text, headings |
| #578FF8 text on black | 6.68:1 | AA | Lc -43.6 | 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 500.
-
Step 50
50
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EAFA
oklch(93.5% 0.024 262.1)
-
Step 200
200
#C9DAF8
oklch(88.5% 0.045 261.9)
-
Step 300
300
#A4C1F6
oklch(80.8% 0.082 262.3)
-
Step 400
400
#72A0F2
oklch(70.8% 0.131 261.3)
-
Step 500
500 (this color)
#578FF8
oklch(66.2% 0.167 261.8)
-
Step 600
600
#326CDC
oklch(55.6% 0.182 261.8)
-
Step 700
700
#2559BF
oklch(49.1% 0.17 262)
-
Step 800
800
#204A9A
oklch(42.8% 0.139 261.7)
-
Step 900
900
#1F3E7B
oklch(37.6% 0.11 262.2)
-
Step 950
950
#132548
oklch(27% 0.069 262.3)
#578FF8 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) | #5E99FC | 0.028 |
| Deuteranopia (no green cones) | #448AF6 | 0.023 |
| Tritanopia (no blue cones) | #00A7B7 | 0.138 |
| Achromatopsia (no color) | #919191 | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #578FF8
#578FF8
oklch(66.2% 0.167 261.8)
- #BC8900
#BC8900
oklch(66.2% 0.136 82.1)
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 #578FF8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.025
- Soft Blue #6488EA ΔE 0.026
- Cornflower Blue #6495ED ΔE 0.029
- Dark Sky Blue #448EE4 ΔE 0.036
- Dodger Blue #1E90FF ΔE 0.037
- Cornflower #6A79F7 ΔE 0.055
- Lavender Blue #8B88F8 ΔE 0.062
- Perrywinkle #8F8CE7 ΔE 0.069
Use #578FF8 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.