#17B8A6
Closest named color: Topaz (#13BBAF). oklch(70.4% 0.122 182.5), rgb(23, 184, 166).
Aa
Black text reads best on this color (8.44:1).
About this color
#17B8A6 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 70%, its chroma 0.122 and its hue 182°. Its hue sits on the cool side of the wheel. The nearest named color is Topaz (#13BBAF), ΔE 0.013 away. Black text reads best on it, at 8.44:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.122) |
| Temperature | cool |
| Nearest name | Topaz (#13BBAF) |
| Black text | 8.44:1 |
| White text | 2.48:1 |
Values
| HEX | #17B8A6 |
| RGB | rgb(23, 184, 166) |
| HSL | hsl(173, 78%, 41%) |
| OKLCH | oklch(70.4% 0.122 182.5) |
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 #17B8A6 | 2.48:1 | Fails | Lc -53.3 | Large or bold text, headings |
| Black text on #17B8A6 | 8.44:1 | AAA | Lc 55.7 | Large or bold text, headings |
| #17B8A6 text on white | 2.48:1 | Fails | Lc 48.3 | Large or bold text, headings |
| #17B8A6 text on black | 8.44:1 | AAA | Lc -53.7 | 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
#EEF8F6
oklch(97.1% 0.011 182.9)
-
Step 100
100
#DBEFEB
oklch(93.6% 0.022 182.5)
-
Step 200
200
#BBE3DB
oklch(88.5% 0.043 181.8)
-
Step 300
300
#87D1C5
oklch(80.9% 0.076 183)
-
Step 400
400 (this color)
#17B8A6
oklch(70.4% 0.122 182.5)
-
Step 500
500
#009F8F
oklch(63.1% 0.113 182.5)
-
Step 600
600
#008678
oklch(55.6% 0.1 182.2)
-
Step 700
700
#007165
oklch(49.2% 0.088 182.2)
-
Step 800
800
#005C52
oklch(42.6% 0.076 182.2)
-
Step 900
900
#004D45
oklch(37.7% 0.067 183.1)
-
Step 950
950
#002E28
oklch(27% 0.049 181.5)
#17B8A6 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) | #AFADA5 | 0.130 |
| Deuteranopia (no green cones) | #9B9EA8 | 0.124 |
| Tritanopia (no blue cones) | #00BCB2 | 0.018 |
| Achromatopsia (no color) | #A4A4A4 | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17B8A6
#17B8A6
oklch(70.4% 0.122 182.5)
- #DE7E99
#DE7E99
oklch(70.5% 0.122 2.6)
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 #17B8A6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Topaz #13BBAF ΔE 0.013
- Light Sea Green #20B2AA ΔE 0.020
- Greeny Blue #42B395 ΔE 0.025
- Green Blue #01C08D ΔE 0.049
- Turquoise Blue #06B1C4 ΔE 0.055
- Greenblue #23C48B ΔE 0.060
- Bluey Green #2BB179 ΔE 0.060
- Dark Seafoam #1FB57A ΔE 0.061
Use #17B8A6 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.