#578EC2
Closest named color: Faded Blue (#658CBB). oklch(63% 0.098 248.3), rgb(87, 142, 194).
Aa
Black text reads best on this color (6.05:1).
About this color
#578EC2 is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.098 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.017 away. Black text reads best on it, at 6.05:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.05:1 |
| White text | 3.46:1 |
Values
| HEX | #578EC2 |
| RGB | rgb(87, 142, 194) |
| HSL | hsl(209, 47%, 55%) |
| OKLCH | oklch(63% 0.098 248.3) |
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 #578EC2 | 3.46:1 | AA large text | Lc -67.6 | Content text, not long reading |
| Black text on #578EC2 | 6.05:1 | AA | Lc 42.0 | Non-text elements, placeholder text |
| #578EC2 text on white | 3.46:1 | AA large text | Lc 62.1 | Content text, not long reading |
| #578EC2 text on black | 6.05:1 | AA | Lc -39.6 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CCDBEA
oklch(88.5% 0.026 248.1)
-
Step 300
300
#A9C4DF
oklch(80.9% 0.048 248.4)
-
Step 400
400
#7AA5CF
oklch(70.7% 0.077 248.4)
-
Step 500
500 (this color)
#578EC2
oklch(63% 0.098 248.3)
-
Step 600
600
#3B78AF
oklch(55.7% 0.107 248.1)
-
Step 700
700
#2D6496
oklch(49% 0.099 248.6)
-
Step 800
800
#26527A
oklch(42.7% 0.083 248.4)
-
Step 900
900
#244462
oklch(37.7% 0.064 248.4)
-
Step 950
950
#162839
oklch(27% 0.04 248.2)
#578EC2 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) | #7890C4 | 0.039 |
| Deuteranopia (no green cones) | #6A85C1 | 0.030 |
| Tritanopia (no blue cones) | #089AA0 | 0.084 |
| Achromatopsia (no color) | #8A8A8A | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #578EC2
#578EC2
oklch(63% 0.098 248.3)
- #B07E43
#B07E43
oklch(63.1% 0.098 68.9)
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 #578EC2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.017
- Dusty Blue #5A86AD ΔE 0.034
- Cool Blue #4984B8 ΔE 0.035
- Off Blue #5684AE ΔE 0.037
- Steel Blue #4682B4 ΔE 0.043
- Silver Lake Blue #778DA9 ΔE 0.050
- Dark Sky Blue #448EE4 ΔE 0.053
- Water Blue #0E87CC ΔE 0.054
Use #578EC2 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.