#558F9B
Closest named color: Dusty Teal (#4C9085). oklch(61.5% 0.063 212.3), rgb(85, 143, 155).
Aa
Black text reads best on this color (5.78:1).
About this color
#558F9B is a medium-dark, muted teal or cyan. In OKLCH its lightness is 61%, its chroma 0.063 and its hue 212°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Teal (#4C9085), ΔE 0.037 away. Black text reads best on it, at 5.78:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (61%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Dusty Teal (#4C9085) |
| Black text | 5.78:1 |
| White text | 3.62:1 |
Values
| HEX | #558F9B |
| RGB | rgb(85, 143, 155) |
| HSL | hsl(190, 29%, 47%) |
| OKLCH | oklch(61.5% 0.063 212.3) |
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 #558F9B | 3.62:1 | AA large text | Lc -69.3 | Content text, not long reading |
| Black text on #558F9B | 5.78:1 | AA | Lc 40.3 | Non-text elements, placeholder text |
| #558F9B text on white | 3.62:1 | AA large text | Lc 63.8 | Content text, not long reading |
| #558F9B text on black | 5.78:1 | AA | Lc -37.9 | 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
#E3EBED
oklch(93.5% 0.009 214.3)
-
Step 200
200
#CDDCE0
oklch(88.4% 0.017 215.5)
-
Step 300
300
#ABC6CC
oklch(80.8% 0.03 212.6)
-
Step 400
400
#7DA9B3
oklch(70.7% 0.049 213.3)
-
Step 500
500 (this color)
#558F9B
oklch(61.5% 0.063 212.3)
-
Step 600
600
#3D7E8B
oklch(55.6% 0.069 212.4)
-
Step 700
700
#2F6A76
oklch(49% 0.064 212.9)
-
Step 800
800
#285760
oklch(42.8% 0.053 211.7)
-
Step 900
900
#26474E
oklch(37.6% 0.04 212.8)
-
Step 950
950
#172A2E
oklch(27.1% 0.026 212.5)
#558F9B 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) | #858B9C | 0.059 |
| Deuteranopia (no green cones) | #7A839B | 0.053 |
| Tritanopia (no blue cones) | #349493 | 0.034 |
| Achromatopsia (no color) | #868686 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #558F9B
#558F9B
oklch(61.5% 0.063 212.3)
- #A7776D
#A7776D
oklch(61.5% 0.063 32.1)
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 #558F9B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Teal #4C9085 ΔE 0.037
- Blue Grey #758DA3 ΔE 0.041
- Steel #738595 ΔE 0.041
- Sea #3C9992 ΔE 0.041
- Light Slate Gray #778899 ΔE 0.042
- Steel Grey #6F828A ΔE 0.044
- Dusty Blue #5A86AD ΔE 0.044
- Teal Green #0A9396 ΔE 0.045
Use #558F9B 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.