#558FD0
Closest named color: Faded Blue (#658CBB). oklch(63.9% 0.116 252.5), rgb(85, 143, 208).
Aa
Black text reads best on this color (6.22:1).
About this color
#558FD0 is a medium-light, moderately saturated blue. In OKLCH its lightness is 64%, its chroma 0.116 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.033 away. Black text reads best on it, at 6.22:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.22:1 |
| White text | 3.37:1 |
Values
| HEX | #558FD0 |
| RGB | rgb(85, 143, 208) |
| HSL | hsl(212, 57%, 57%) |
| OKLCH | oklch(63.9% 0.116 252.5) |
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 #558FD0 | 3.37:1 | AA large text | Lc -66.5 | Content text, not long reading |
| Black text on #558FD0 | 6.22:1 | AA | Lc 43.1 | Non-text elements, placeholder text |
| #558FD0 text on white | 3.37:1 | AA large text | Lc 61.0 | Content text, not long reading |
| #558FD0 text on black | 6.22:1 | AA | Lc -40.7 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF5
oklch(93.6% 0.017 250.8)
-
Step 200
200
#CBDBEE
oklch(88.5% 0.031 252.7)
-
Step 300
300
#A7C4E5
oklch(81% 0.056 251.8)
-
Step 400
400
#77A4D8
oklch(70.7% 0.091 252.6)
-
Step 500
500 (this color)
#558FD0
oklch(63.9% 0.116 252.5)
-
Step 600
600
#3676BA
oklch(55.7% 0.125 252.2)
-
Step 700
700
#2862A1
oklch(49% 0.118 253)
-
Step 800
800
#225182
oklch(42.8% 0.096 251.9)
-
Step 900
900
#214368
oklch(37.6% 0.075 252.2)
-
Step 950
950
#14283D
oklch(27.1% 0.047 251)
#558FD0 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) | #7492D3 | 0.037 |
| Deuteranopia (no green cones) | #6386CF | 0.027 |
| Tritanopia (no blue cones) | #009EA6 | 0.097 |
| Achromatopsia (no color) | #8C8C8C | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #558FD0
#558FD0
oklch(63.9% 0.116 252.5)
- #B67F30
#B67F30
oklch(63.8% 0.115 72.4)
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 #558FD0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.033
- Dark Sky Blue #448EE4 ΔE 0.033
- Chefchaouen Blue #4895EF ΔE 0.046
- Cool Blue #4984B8 ΔE 0.046
- Cornflower Blue #6495ED ΔE 0.048
- Soft Blue #6488EA ΔE 0.050
- Water Blue #0E87CC ΔE 0.052
- Dusty Blue #5A86AD ΔE 0.053
Use #558FD0 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.