#578EE2
Closest named color: Dark Sky Blue (#448EE4). oklch(64.7% 0.139 258.6), rgb(87, 142, 226).
Aa
Black text reads best on this color (6.37:1).
About this color
#578EE2 is a medium-light, moderately saturated blue. In OKLCH its lightness is 65%, its chroma 0.139 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.017 away. Black text reads best on it, at 6.37:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.37:1 |
| White text | 3.29:1 |
Values
| HEX | #578EE2 |
| RGB | rgb(87, 142, 226) |
| HSL | hsl(216, 71%, 61%) |
| OKLCH | oklch(64.7% 0.139 258.6) |
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 #578EE2 | 3.29:1 | AA large text | Lc -65.5 | Content text, not long reading |
| Black text on #578EE2 | 6.37:1 | AA | Lc 44.0 | Non-text elements, placeholder text |
| #578EE2 text on white | 3.29:1 | AA large text | Lc 60.1 | Content text, not long reading |
| #578EE2 text on black | 6.37:1 | AA | Lc -41.6 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EBF7
oklch(93.7% 0.019 255.5)
-
Step 200
200
#CADAF3
oklch(88.4% 0.039 259.3)
-
Step 300
300
#A6C2ED
oklch(80.8% 0.068 258.9)
-
Step 400
400
#76A2E4
oklch(70.7% 0.109 258.3)
-
Step 500
500 (this color)
#578EE2
oklch(64.7% 0.139 258.6)
-
Step 600
600
#3671CA
oklch(55.6% 0.151 258.6)
-
Step 700
700
#285EAF
oklch(49% 0.141 258.6)
-
Step 800
800
#234D8E
oklch(42.7% 0.118 259)
-
Step 900
900
#214171
oklch(37.7% 0.091 258.4)
-
Step 950
950
#142642
oklch(26.9% 0.058 258.9)
#578EE2 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) | #6A95E5 | 0.030 |
| Deuteranopia (no green cones) | #5788E0 | 0.016 |
| Tritanopia (no blue cones) | #00A1AD | 0.117 |
| Achromatopsia (no color) | #8E8E8E | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #578EE2
#578EE2
oklch(64.7% 0.139 258.6)
- #BA8200
#BA8200
oklch(64.6% 0.135 78.3)
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 #578EE2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.017
- Soft Blue #6488EA ΔE 0.025
- Chefchaouen Blue #4895EF ΔE 0.025
- Cornflower Blue #6495ED ΔE 0.028
- Dodger Blue #1E90FF ΔE 0.053
- Faded Blue #658CBB ΔE 0.059
- Water Blue #0E87CC ΔE 0.062
- Cornflower #6A79F7 ΔE 0.068
Use #578EE2 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.