#578AFF
Closest named color: Soft Blue (#6488EA). oklch(65.6% 0.182 264.3), rgb(87, 138, 255).
Aa
Black text reads best on this color (6.48:1).
About this color
#578AFF is a medium-light, vivid blue. In OKLCH its lightness is 66%, its chroma 0.182 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.033 away. Black text reads best on it, at 6.48:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.182) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 6.48:1 |
| White text | 3.23:1 |
Values
| HEX | #578AFF |
| RGB | rgb(87, 138, 255) |
| HSL | hsl(222, 100%, 67%) |
| OKLCH | oklch(65.6% 0.182 264.3) |
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 #578AFF | 3.23:1 | AA large text | Lc -64.7 | Content text, not long reading |
| Black text on #578AFF | 6.48:1 | AA | Lc 44.7 | Non-text elements, placeholder text |
| #578AFF text on white | 3.23:1 | AA large text | Lc 59.3 | Large or bold text, headings |
| #578AFF text on black | 6.48:1 | AA | Lc -42.4 | 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
#E1EAFC
oklch(93.6% 0.026 264.4)
-
Step 200
200
#C9DAFB
oklch(88.6% 0.049 263.7)
-
Step 300
300
#A4C0FB
oklch(80.8% 0.089 264.8)
-
Step 400
400
#739EF9
oklch(70.8% 0.142 264)
-
Step 500
500 (this color)
#578AFF
oklch(65.6% 0.182 264.3)
-
Step 600
600
#3568E5
oklch(55.6% 0.198 264.2)
-
Step 700
700
#2955C7
oklch(49% 0.184 264.5)
-
Step 800
800
#2247A1
oklch(42.8% 0.152 264.1)
-
Step 900
900
#203D80
oklch(37.8% 0.119 264)
-
Step 950
950
#13244B
oklch(27% 0.076 264.2)
#578AFF 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) | #4E97FF | 0.033 |
| Deuteranopia (no green cones) | #2D88FD | 0.033 |
| Tritanopia (no blue cones) | #00A5B8 | 0.150 |
| Achromatopsia (no color) | #8F8F8F | 0.182 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #578AFF
#578AFF
oklch(65.6% 0.182 264.3)
- #B78900
#B78900
oklch(65.7% 0.135 84.7)
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 #578AFF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.033
- Dodger Blue #1E90FF ΔE 0.037
- Chefchaouen Blue #4895EF ΔE 0.041
- Cornflower #6A79F7 ΔE 0.044
- Cornflower Blue #6495ED ΔE 0.045
- Dark Sky Blue #448EE4 ΔE 0.047
- Clear Blue #247AFD ΔE 0.061
- Lavender Blue #8B88F8 ΔE 0.062
Use #578AFF 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.