#558CA0
Closest named color: Dusty Blue (#5A86AD). oklch(61% 0.066 223.3), rgb(85, 140, 160).
Aa
Black text reads best on this color (5.64:1).
About this color
#558CA0 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 61%, its chroma 0.066 and its hue 223°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.031 away. Black text reads best on it, at 5.64:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (61%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.64:1 |
| White text | 3.72:1 |
Values
| HEX | #558CA0 |
| RGB | rgb(85, 140, 160) |
| HSL | hsl(196, 31%, 48%) |
| OKLCH | oklch(61% 0.066 223.3) |
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 #558CA0 | 3.72:1 | AA large text | Lc -70.2 | Content text, not long reading |
| Black text on #558CA0 | 5.64:1 | AA | Lc 39.4 | Non-text elements, placeholder text |
| #558CA0 text on white | 3.72:1 | AA large text | Lc 64.7 | Content text, not long reading |
| #558CA0 text on black | 5.64:1 | AA | Lc -37.0 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E4EBEE
oklch(93.6% 0.009 225.1)
-
Step 200
200
#CDDCE2
oklch(88.5% 0.018 223.6)
-
Step 300
300
#ABC6D0
oklch(81% 0.032 222.1)
-
Step 400
400
#7EA8B8
oklch(70.7% 0.051 223.4)
-
Step 500
500 (this color)
#558CA0
oklch(61% 0.066 223.3)
-
Step 600
600
#3F7D92
oklch(55.7% 0.072 222.6)
-
Step 700
700
#31697C
oklch(49.1% 0.066 222.9)
-
Step 800
800
#2A5665
oklch(42.8% 0.054 222.6)
-
Step 900
900
#264752
oklch(37.8% 0.043 221.6)
-
Step 950
950
#172930
oklch(26.9% 0.027 224.6)
#558CA0 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) | #8189A1 | 0.054 |
| Deuteranopia (no green cones) | #7581A0 | 0.047 |
| Tritanopia (no blue cones) | #319292 | 0.044 |
| Achromatopsia (no color) | #848484 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #558CA0
#558CA0
oklch(61% 0.066 223.3)
- #A57763
#A57763
oklch(61% 0.065 44.5)
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 #558CA0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Blue #5A86AD ΔE 0.031
- Off Blue #5684AE ΔE 0.037
- Steel #738595 ΔE 0.038
- Blue Grey #758DA3 ΔE 0.038
- Light Slate Gray #778899 ΔE 0.040
- Steel Grey #6F828A ΔE 0.043
- Slate Gray #708090 ΔE 0.043
- Silver Lake Blue #778DA9 ΔE 0.044
Use #558CA0 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.