#578BFD
Closest named color: Soft Blue (#6488EA). oklch(65.7% 0.178 263.8), rgb(87, 139, 253).
Aa
Black text reads best on this color (6.51:1).
About this color
#578BFD is a medium-light, vivid blue. In OKLCH its lightness is 66%, its chroma 0.178 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.030 away. Black text reads best on it, at 6.51:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.178) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 6.51:1 |
| White text | 3.22:1 |
Values
| HEX | #578BFD |
| RGB | rgb(87, 139, 253) |
| HSL | hsl(221, 98%, 67%) |
| OKLCH | oklch(65.7% 0.178 263.8) |
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 #578BFD | 3.22:1 | AA large text | Lc -64.6 | Content text, not long reading |
| Black text on #578BFD | 6.51:1 | AA | Lc 44.9 | Non-text elements, placeholder text |
| #578BFD text on white | 3.22:1 | AA large text | Lc 59.1 | Large or bold text, headings |
| #578BFD text on black | 6.51:1 | AA | Lc -42.6 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E1EAFB
oklch(93.5% 0.025 263.3)
-
Step 200
200
#C9DAFA
oklch(88.6% 0.048 263.1)
-
Step 300
300
#A4C1FA
oklch(81% 0.087 263.6)
-
Step 400
400
#739EF7
oklch(70.7% 0.139 263.7)
-
Step 500
500 (this color)
#578BFD
oklch(65.7% 0.178 263.8)
-
Step 600
600
#3569E3
oklch(55.6% 0.194 263.8)
-
Step 700
700
#2856C5
oklch(49% 0.181 263.9)
-
Step 800
800
#22479F
oklch(42.6% 0.149 263.9)
-
Step 900
900
#203D7E
oklch(37.7% 0.116 263.7)
-
Step 950
950
#13244A
oklch(26.9% 0.074 264)
#578BFD 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) | #5297FF | 0.030 |
| Deuteranopia (no green cones) | #3388FB | 0.031 |
| Tritanopia (no blue cones) | #00A5B8 | 0.146 |
| Achromatopsia (no color) | #8F8F8F | 0.179 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #578BFD
#578BFD
oklch(65.7% 0.178 263.8)
- #B88900
#B88900
oklch(65.8% 0.135 84.2)
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 #578BFD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.030
- Dodger Blue #1E90FF ΔE 0.036
- Chefchaouen Blue #4895EF ΔE 0.037
- Cornflower Blue #6495ED ΔE 0.042
- Dark Sky Blue #448EE4 ΔE 0.044
- Cornflower #6A79F7 ΔE 0.046
- Lavender Blue #8B88F8 ΔE 0.062
- Clear Blue #247AFD ΔE 0.063
Use #578BFD 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.