#558B82
Closest named color: Dusty Teal (#4C9085). oklch(59.6% 0.059 182.5), rgb(85, 139, 130).
Aa
Black text reads best on this color (5.40:1).
About this color
#558B82 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 60%, its chroma 0.059 and its hue 182°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Teal (#4C9085), ΔE 0.015 away. Black text reads best on it, at 5.40:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (60%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Dusty Teal (#4C9085) |
| Black text | 5.40:1 |
| White text | 3.88:1 |
Values
| HEX | #558B82 |
| RGB | rgb(85, 139, 130) |
| HSL | hsl(170, 24%, 44%) |
| OKLCH | oklch(59.6% 0.059 182.5) |
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 #558B82 | 3.88:1 | AA large text | Lc -71.7 | Content text, not long reading |
| Black text on #558B82 | 5.40:1 | AA | Lc 37.8 | Non-text elements, placeholder text |
| #558B82 text on white | 3.88:1 | AA large text | Lc 66.2 | Content text, not long reading |
| #558B82 text on black | 5.40:1 | AA | Lc -35.4 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E4ECEA
oklch(93.6% 0.009 179.6)
-
Step 200
200
#CEDDDA
oklch(88.5% 0.017 182.7)
-
Step 300
300
#ADC7C2
oklch(80.9% 0.029 182.7)
-
Step 400
400
#81AAA3
oklch(70.6% 0.046 183.4)
-
Step 500
500 (this color)
#558B82
oklch(59.6% 0.059 182.5)
-
Step 600
600
#448076
oklch(55.6% 0.065 181.8)
-
Step 700
700
#356C63
oklch(49.1% 0.06 181.8)
-
Step 800
800
#2D5851
oklch(42.7% 0.05 182.1)
-
Step 900
900
#294843
oklch(37.6% 0.038 182.8)
-
Step 950
950
#182A27
oklch(26.8% 0.024 182.8)
#558B82 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) | #868582 | 0.063 |
| Deuteranopia (no green cones) | #7D7E83 | 0.060 |
| Tritanopia (no blue cones) | #428D88 | 0.018 |
| Achromatopsia (no color) | #818181 | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #558B82
#558B82
oklch(59.6% 0.059 182.5)
- #9E707C
#9E707C
oklch(59.6% 0.06 1.9)
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 #558B82, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Teal #4C9085 ΔE 0.015
- Slate Green #658D6D ΔE 0.036
- Sea #3C9992 ΔE 0.042
- Steel Grey #6F828A ΔE 0.044
- Teal Green #0A9396 ΔE 0.047
- Dark Cyan #008B8B ΔE 0.047
- Grey Teal #5E9B8A ΔE 0.048
- Battleship Grey #6B7C85 ΔE 0.051
Use #558B82 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.