#558D9C
Closest named color: Steel (#738595). oklch(61% 0.063 216.8), rgb(85, 141, 156).
Aa
Black text reads best on this color (5.67:1).
About this color
#558D9C is a medium-dark, muted teal or cyan. In OKLCH its lightness is 61%, its chroma 0.063 and its hue 217°. Its hue sits on the cool side of the wheel. The nearest named color is Steel (#738595), ΔE 0.038 away. Black text reads best on it, at 5.67:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (61%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Steel (#738595) |
| Black text | 5.67:1 |
| White text | 3.69:1 |
Values
| HEX | #558D9C |
| RGB | rgb(85, 141, 156) |
| HSL | hsl(193, 29%, 47%) |
| OKLCH | oklch(61% 0.063 216.8) |
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 #558D9C | 3.69:1 | AA large text | Lc -70.0 | Content text, not long reading |
| Black text on #558D9C | 5.67:1 | AA | Lc 39.6 | Non-text elements, placeholder text |
| #558D9C text on white | 3.69:1 | AA large text | Lc 64.5 | Content text, not long reading |
| #558D9C text on black | 5.67:1 | AA | Lc -37.2 | 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
#CDDCE0
oklch(88.4% 0.017 215.5)
-
Step 300
300
#ABC6CE
oklch(80.9% 0.031 217.5)
-
Step 400
400
#7EA9B5
oklch(70.8% 0.049 216.8)
-
Step 500
500 (this color)
#558D9C
oklch(61% 0.063 216.8)
-
Step 600
600
#3F7D8D
oklch(55.5% 0.068 216.8)
-
Step 700
700
#306A78
oklch(49.2% 0.064 215.9)
-
Step 800
800
#295662
oklch(42.6% 0.053 217.5)
-
Step 900
900
#264750
oklch(37.7% 0.042 217.4)
-
Step 950
950
#172A2F
oklch(27.1% 0.026 216.3)
#558D9C 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) | #838A9D | 0.056 |
| Deuteranopia (no green cones) | #78819C | 0.051 |
| Tritanopia (no blue cones) | #349392 | 0.038 |
| Achromatopsia (no color) | #858585 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #558D9C
#558D9C
oklch(61% 0.063 216.8)
- #A57669
#A57669
oklch(61% 0.063 36.1)
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 #558D9C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel #738595 ΔE 0.038
- Dusty Blue #5A86AD ΔE 0.039
- Blue Grey #758DA3 ΔE 0.040
- Light Slate Gray #778899 ΔE 0.040
- Dusty Teal #4C9085 ΔE 0.041
- Steel Grey #6F828A ΔE 0.042
- Slate Gray #708090 ΔE 0.044
- Off Blue #5684AE ΔE 0.044
Use #558D9C 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.