#558B91
Closest named color: Dusty Teal (#4C9085). oklch(60.1% 0.058 204.8), rgb(85, 139, 145).
Aa
Black text reads best on this color (5.48:1).
About this color
#558B91 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 60%, its chroma 0.058 and its hue 205°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Teal (#4C9085), ΔE 0.029 away. Black text reads best on it, at 5.48:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (60%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Dusty Teal (#4C9085) |
| Black text | 5.48:1 |
| White text | 3.82:1 |
Values
| HEX | #558B91 |
| RGB | rgb(85, 139, 145) |
| HSL | hsl(186, 26%, 45%) |
| OKLCH | oklch(60.1% 0.058 204.8) |
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 #558B91 | 3.82:1 | AA large text | Lc -71.2 | Content text, not long reading |
| Black text on #558B91 | 5.48:1 | AA | Lc 38.4 | Non-text elements, placeholder text |
| #558B91 text on white | 3.82:1 | AA large text | Lc 65.7 | Content text, not long reading |
| #558B91 text on black | 5.48:1 | AA | Lc -36.0 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E4EBEC
oklch(93.5% 0.008 207.1)
-
Step 200
200
#CEDCDE
oklch(88.4% 0.015 207.1)
-
Step 300
300
#ACC6C9
oklch(80.8% 0.028 205.1)
-
Step 400
400
#80A9AE
oklch(70.7% 0.045 205.5)
-
Step 500
500 (this color)
#558B91
oklch(60.1% 0.058 204.8)
-
Step 600
600
#427E85
oklch(55.6% 0.063 205.4)
-
Step 700
700
#346A70
oklch(49% 0.058 205)
-
Step 800
800
#2C575B
oklch(42.8% 0.048 203.4)
-
Step 900
900
#28484B
oklch(37.8% 0.038 203.4)
-
Step 950
950
#182A2C
oklch(27% 0.024 204.7)
#558B91 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) | #838791 | 0.057 |
| Deuteranopia (no green cones) | #797F91 | 0.053 |
| Tritanopia (no blue cones) | #3B8F8D | 0.027 |
| Achromatopsia (no color) | #828282 | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #558B91
#558B91
oklch(60.1% 0.058 204.8)
- #A1736F
#A1736F
oklch(60.1% 0.059 24.6)
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 #558B91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Teal #4C9085 ΔE 0.029
- Steel Grey #6F828A ΔE 0.036
- Steel #738595 ΔE 0.040
- Grey Blue #647D8E ΔE 0.042
- Slate Gray #708090 ΔE 0.042
- Sea #3C9992 ΔE 0.044
- Teal Green #0A9396 ΔE 0.044
- Light Slate Gray #778899 ΔE 0.045
Use #558B91 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.