#578BCB
Closest named color: Faded Blue (#658CBB). oklch(62.8% 0.112 254.4), rgb(87, 139, 203).
Aa
Black text reads best on this color (5.96:1).
About this color
#578BCB is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.112 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.029 away. Black text reads best on it, at 5.96:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 5.96:1 |
| White text | 3.52:1 |
Values
| HEX | #578BCB |
| RGB | rgb(87, 139, 203) |
| HSL | hsl(213, 53%, 57%) |
| OKLCH | oklch(62.8% 0.112 254.4) |
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 #578BCB | 3.52:1 | AA large text | Lc -68.1 | Content text, not long reading |
| Black text on #578BCB | 5.96:1 | AA | Lc 41.4 | Non-text elements, placeholder text |
| #578BCB text on white | 3.52:1 | AA large text | Lc 62.6 | Content text, not long reading |
| #578BCB text on black | 5.96:1 | AA | Lc -39.0 | 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
#E3EBF5
oklch(93.7% 0.016 253.9)
-
Step 200
200
#CCDBED
oklch(88.6% 0.03 253)
-
Step 300
300
#A9C3E4
oklch(80.9% 0.055 254.5)
-
Step 400
400
#7BA3D7
oklch(70.6% 0.088 255.3)
-
Step 500
500 (this color)
#578BCB
oklch(62.8% 0.112 254.4)
-
Step 600
600
#3C75B9
oklch(55.6% 0.122 254.2)
-
Step 700
700
#2E629F
oklch(49.1% 0.113 254.1)
-
Step 800
800
#275081
oklch(42.7% 0.094 254.3)
-
Step 900
900
#254368
oklch(37.8% 0.073 254.6)
-
Step 950
950
#16273D
oklch(27% 0.047 255.4)
#578BCB 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) | #718FCE | 0.033 |
| Deuteranopia (no green cones) | #6283CA | 0.023 |
| Tritanopia (no blue cones) | #009AA2 | 0.098 |
| Achromatopsia (no color) | #888888 | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #578BCB
#578BCB
oklch(62.8% 0.112 254.4)
- #B07D2F
#B07D2F
oklch(62.7% 0.112 74.2)
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 #578BCB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.029
- Cool Blue #4984B8 ΔE 0.037
- Dark Sky Blue #448EE4 ΔE 0.039
- Off Blue #5684AE ΔE 0.045
- Dusty Blue #5A86AD ΔE 0.045
- Steel Blue #4682B4 ΔE 0.045
- Water Blue #0E87CC ΔE 0.048
- Soft Blue #6488EA ΔE 0.052
Use #578BCB 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.