#009171
Closest named color: Viridian (#1E9167). oklch(58.4% 0.116 170.1), rgb(0, 145, 113).
Aa
Black text reads best on this color (5.28:1).
About this color
#009171 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 58%, its chroma 0.116 and its hue 170°. Its hue sits on the cool side of the wheel. The nearest named color is Viridian (#1E9167), ΔE 0.015 away. Black text reads best on it, at 5.28:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Viridian (#1E9167) |
| Black text | 5.28:1 |
| White text | 3.97:1 |
Values
| HEX | #009171 |
| RGB | rgb(0, 145, 113) |
| HSL | hsl(167, 100%, 28%) |
| OKLCH | oklch(58.4% 0.116 170.1) |
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 #009171 | 3.97:1 | AA large text | Lc -71.9 | Content text, not long reading |
| Black text on #009171 | 5.28:1 | AA | Lc 37.6 | Non-text elements, placeholder text |
| #009171 text on white | 3.97:1 | AA large text | Lc 66.4 | Content text, not long reading |
| #009171 text on black | 5.28:1 | AA | Lc -35.2 | 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 600.
-
Step 50
50
#F1F7F5
oklch(97.1% 0.007 174.4)
-
Step 100
100
#E1EDE8
oklch(93.6% 0.014 169.2)
-
Step 200
200
#C7E0D6
oklch(88.5% 0.03 169.6)
-
Step 300
300
#A0CCBB
oklch(80.9% 0.052 169.4)
-
Step 400
400
#68B299
oklch(70.8% 0.084 170.1)
-
Step 500
500
#359E80
oklch(63.1% 0.106 170.3)
-
Step 600
600 (this color)
#009171
oklch(58.4% 0.116 170.1)
-
Step 700
700
#007258
oklch(49.1% 0.097 169.9)
-
Step 800
800
#005D48
oklch(42.6% 0.084 170.6)
-
Step 900
900
#0C4D3C
oklch(37.6% 0.069 170.3)
-
Step 950
950
#0B2D23
oklch(26.9% 0.044 170.3)
#009171 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) | #8C866F | 0.117 |
| Deuteranopia (no green cones) | #7D7B73 | 0.113 |
| Tritanopia (no blue cones) | #009288 | 0.035 |
| Achromatopsia (no color) | #808080 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #009171
#009171
oklch(58.4% 0.116 170.1)
- #AE5D85
#AE5D85
oklch(58.5% 0.115 350.3)
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 #009171, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Viridian #1E9167 ΔE 0.015
- Sea Green #2E8B57 ΔE 0.035
- Ocean Green #3D9973 ΔE 0.037
- Blue Green #0F9B8E ΔE 0.047
- Dark Cyan #008B8B ΔE 0.049
- Light Forest Green #4F9153 ΔE 0.051
- Dusty Teal #4C9085 ΔE 0.052
- Persian Green #2A9D8F ΔE 0.054
Use #009171 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.