#17C09A
Closest named color: Green Blue (#01C08D). oklch(72.1% 0.137 171.4), rgb(23, 192, 154).
Aa
Black text reads best on this color (9.04:1).
About this color
#17C09A is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 72%, its chroma 0.137 and its hue 171°. Its hue sits on the cool side of the wheel. The nearest named color is Green Blue (#01C08D), ΔE 0.019 away. Black text reads best on it, at 9.04:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.137) |
| Temperature | cool |
| Nearest name | Green Blue (#01C08D) |
| Black text | 9.04:1 |
| White text | 2.32:1 |
Values
| HEX | #17C09A |
| RGB | rgb(23, 192, 154) |
| HSL | hsl(167, 79%, 42%) |
| OKLCH | oklch(72.1% 0.137 171.4) |
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 #17C09A | 2.32:1 | Fails | Lc -50.1 | Large or bold text, headings |
| Black text on #17C09A | 9.04:1 | AAA | Lc 58.8 | Large or bold text, headings |
| #17C09A text on white | 2.32:1 | Fails | Lc 45.2 | Large or bold text, headings |
| #17C09A text on black | 9.04:1 | AAA | Lc -56.9 | Large or bold text, headings |
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 400.
-
Step 50
50
#EEF8F4
oklch(97.1% 0.012 170.3)
-
Step 100
100
#DAF0E8
oklch(93.7% 0.025 171.9)
-
Step 200
200
#BBE4D5
oklch(88.5% 0.047 171)
-
Step 300
300
#85D3BA
oklch(80.9% 0.085 171.7)
-
Step 400
400 (this color)
#17C09A
oklch(72.1% 0.137 171.4)
-
Step 500
500
#00A180
oklch(63.1% 0.123 171.4)
-
Step 600
600
#00876B
oklch(55.5% 0.108 171.4)
-
Step 700
700
#00725A
oklch(49.2% 0.096 171.5)
-
Step 800
800
#005D49
oklch(42.6% 0.083 171.6)
-
Step 900
900
#004E3D
oklch(37.8% 0.073 171.8)
-
Step 950
950
#002F23
oklch(27.2% 0.053 170.5)
#17C09A 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) | #BAB298 | 0.141 |
| Deuteranopia (no green cones) | #A6A49D | 0.135 |
| Tritanopia (no blue cones) | #00C2B5 | 0.037 |
| Achromatopsia (no color) | #AAAAAA | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17C09A
#17C09A
oklch(72.1% 0.137 171.4)
- #E57FAF
#E57FAF
oklch(72.2% 0.137 351.5)
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 #17C09A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Green Blue #01C08D ΔE 0.019
- Greenblue #23C48B ΔE 0.027
- Greeny Blue #42B395 ΔE 0.037
- Topaz #13BBAF ΔE 0.038
- Dark Seafoam #1FB57A ΔE 0.046
- Green Teal #0CB577 ΔE 0.051
- Bluey Green #2BB179 ΔE 0.052
- Dark Mint Green #20C073 ΔE 0.053
Use #17C09A 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.