#558F91
Closest named color: Dusty Teal (#4C9085). oklch(61.1% 0.061 198.5), rgb(85, 143, 145).
Aa
Black text reads best on this color (5.72:1).
About this color
#558F91 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 61%, its chroma 0.061 and its hue 199°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Teal (#4C9085), ΔE 0.022 away. Black text reads best on it, at 5.72:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (61%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Dusty Teal (#4C9085) |
| Black text | 5.72:1 |
| White text | 3.66:1 |
Values
| HEX | #558F91 |
| RGB | rgb(85, 143, 145) |
| HSL | hsl(182, 26%, 45%) |
| OKLCH | oklch(61.1% 0.061 198.5) |
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 #558F91 | 3.66:1 | AA large text | Lc -69.7 | Content text, not long reading |
| Black text on #558F91 | 5.72:1 | AA | Lc 39.9 | Non-text elements, placeholder text |
| #558F91 text on white | 3.66:1 | AA large text | Lc 64.2 | Content text, not long reading |
| #558F91 text on black | 5.72:1 | AA | Lc -37.5 | 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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E4ECEC
oklch(93.7% 0.009 197)
-
Step 200
200
#CDDDDD
oklch(88.6% 0.017 196.8)
-
Step 300
300
#ABC7C8
oklch(80.9% 0.03 199.2)
-
Step 400
400
#7EAAAB
oklch(70.7% 0.047 197.9)
-
Step 500
500 (this color)
#558F91
oklch(61.1% 0.061 198.5)
-
Step 600
600
#3F7F82
oklch(55.6% 0.066 199.5)
-
Step 700
700
#306B6E
oklch(49% 0.061 199.8)
-
Step 800
800
#295859
oklch(42.8% 0.051 197.3)
-
Step 900
900
#264849
oklch(37.6% 0.04 198.1)
-
Step 950
950
#172A2B
oklch(26.9% 0.025 200)
#558F91 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) | #888A91 | 0.063 |
| Deuteranopia (no green cones) | #7D8291 | 0.058 |
| Tritanopia (no blue cones) | #3A938F | 0.025 |
| Achromatopsia (no color) | #858585 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #558F91
#558F91
oklch(61.1% 0.061 198.5)
- #A57575
#A57575
oklch(61.1% 0.061 19)
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 #558F91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Teal #4C9085 ΔE 0.022
- Sea #3C9992 ΔE 0.033
- Teal Green #0A9396 ΔE 0.041
- Grey Teal #5E9B8A ΔE 0.042
- Steel Grey #6F828A ΔE 0.043
- Steel #738595 ΔE 0.045
- Cadet Blue #5F9EA0 ΔE 0.047
- Light Slate Gray #778899 ΔE 0.048
Use #558F91 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.