#17A8A3
Closest named color: Light Sea Green (#20B2AA). oklch(66.2% 0.11 191), rgb(23, 168, 163).
Aa
Black text reads best on this color (7.16:1).
About this color
#17A8A3 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 66%, its chroma 0.110 and its hue 191°. Its hue sits on the cool side of the wheel. The nearest named color is Light Sea Green (#20B2AA), ΔE 0.029 away. Black text reads best on it, at 7.16:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Light Sea Green (#20B2AA) |
| Black text | 7.16:1 |
| White text | 2.93:1 |
Values
| HEX | #17A8A3 |
| RGB | rgb(23, 168, 163) |
| HSL | hsl(178, 76%, 37%) |
| OKLCH | oklch(66.2% 0.11 191) |
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 #17A8A3 | 2.93:1 | Fails | Lc -60.5 | Content text, not long reading |
| Black text on #17A8A3 | 7.16:1 | AAA | Lc 48.8 | Large or bold text, headings |
| #17A8A3 text on white | 2.93:1 | Fails | Lc 55.2 | Large or bold text, headings |
| #17A8A3 text on black | 7.16:1 | AAA | Lc -46.6 | 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 500.
-
Step 50
50
#F0F7F6
oklch(97.1% 0.008 186.9)
-
Step 100
100
#DFEDEC
oklch(93.5% 0.015 191.8)
-
Step 200
200
#C4E0DE
oklch(88.6% 0.03 191.4)
-
Step 300
300
#98CCC9
oklch(80.8% 0.054 191.7)
-
Step 400
400
#58B2AD
oklch(70.7% 0.087 190.6)
-
Step 500
500 (this color)
#17A8A3
oklch(66.2% 0.11 191)
-
Step 600
600
#008581
oklch(55.7% 0.096 191.1)
-
Step 700
700
#00706C
oklch(49.2% 0.085 190.4)
-
Step 800
800
#005B59
oklch(42.6% 0.073 192.2)
-
Step 900
900
#004C4A
oklch(37.6% 0.065 191.7)
-
Step 950
950
#012D2C
oklch(26.9% 0.045 192.5)
#17A8A3 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) | #9D9FA3 | 0.116 |
| Deuteranopia (no green cones) | #8B91A4 | 0.110 |
| Tritanopia (no blue cones) | #00ADA6 | 0.014 |
| Achromatopsia (no color) | #979797 | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17A8A3
#17A8A3
oklch(66.2% 0.11 191)
- #CD7582
#CD7582
oklch(66.3% 0.111 11.1)
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 #17A8A3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Sea Green #20B2AA ΔE 0.029
- Persian Green #2A9D8F ΔE 0.036
- Sea #3C9992 ΔE 0.043
- Blue Green #0F9B8E ΔE 0.044
- Cadet Blue #5F9EA0 ΔE 0.047
- Dull Teal #5F9E8F ΔE 0.047
- Greeny Blue #42B395 ΔE 0.048
- Turquoise Blue #06B1C4 ΔE 0.049
Use #17A8A3 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.