#3A8580
Closest named color: Dark Cyan (#008B8B). oklch(56.8% 0.075 189.4), rgb(58, 133, 128).
Aa
Black text reads best on this color (4.84:1).
About this color
#3A8580 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 57%, its chroma 0.075 and its hue 189°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Cyan (#008B8B), ΔE 0.027 away. Black text reads best on it, at 4.84:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Dark Cyan (#008B8B) |
| Black text | 4.84:1 |
| White text | 4.33:1 |
Values
| HEX | #3A8580 |
| RGB | rgb(58, 133, 128) |
| HSL | hsl(176, 39%, 37%) |
| OKLCH | oklch(56.8% 0.075 189.4) |
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 #3A8580 | 4.33:1 | AA large text | Lc -75.3 | Fine for body text |
| Black text on #3A8580 | 4.84:1 | AA | Lc 34.3 | Non-text elements, placeholder text |
| #3A8580 text on white | 4.33:1 | AA large text | Lc 69.8 | Content text, not long reading |
| #3A8580 text on black | 4.84:1 | AA | Lc -31.9 | 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 600.
-
Step 50
50
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEB
oklch(93.6% 0.01 189.1)
-
Step 200
200
#CCDDDC
oklch(88.4% 0.018 192.6)
-
Step 300
300
#A9C8C5
oklch(80.9% 0.034 189.3)
-
Step 400
400
#7AACA7
oklch(70.8% 0.054 188.3)
-
Step 500
500
#559792
oklch(63.1% 0.068 189.3)
-
Step 600
600 (this color)
#3A8580
oklch(56.8% 0.075 189.4)
-
Step 700
700
#276D69
oklch(49% 0.069 189.9)
-
Step 800
800
#235956
oklch(42.7% 0.057 190.3)
-
Step 900
900
#224946
oklch(37.6% 0.045 188.9)
-
Step 950
950
#152B29
oklch(27% 0.028 188.1)
#3A8580 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) | #7E7F80 | 0.079 |
| Deuteranopia (no green cones) | #727681 | 0.074 |
| Tritanopia (no blue cones) | #008883 | 0.023 |
| Achromatopsia (no color) | #797979 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A8580
#3A8580
oklch(56.8% 0.075 189.4)
- #9D646D
#9D646D
oklch(56.7% 0.075 9.4)
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 #3A8580, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Cyan #008B8B ΔE 0.027
- Teal #008080 ΔE 0.032
- Dusty Teal #4C9085 ΔE 0.038
- Teal Green #0A9396 ΔE 0.045
- Bluegreen #017A79 ΔE 0.047
- Teal Blue #01889F ΔE 0.048
- Deep Aqua #08787F ΔE 0.051
- Ocean #017B92 ΔE 0.055
Use #3A8580 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.