#17C7BD
Closest named color: Dark Turquoise (#00CED1). oklch(74.9% 0.127 188.3), rgb(23, 199, 189).
Aa
Black text reads best on this color (9.94:1).
About this color
#17C7BD is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 75%, its chroma 0.127 and its hue 188°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Turquoise (#00CED1), ΔE 0.030 away. Black text reads best on it, at 9.94:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (75%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Dark Turquoise (#00CED1) |
| Black text | 9.94:1 |
| White text | 2.11:1 |
Values
| HEX | #17C7BD |
| RGB | rgb(23, 199, 189) |
| HSL | hsl(177, 79%, 44%) |
| OKLCH | oklch(74.9% 0.127 188.3) |
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 #17C7BD | 2.11:1 | Fails | Lc -45.4 | Large or bold text, headings |
| Black text on #17C7BD | 9.94:1 | AAA | Lc 63.1 | Content text, not long reading |
| #17C7BD text on white | 2.11:1 | Fails | Lc 40.8 | Non-text elements, placeholder text |
| #17C7BD text on black | 9.94:1 | AAA | Lc -61.5 | Content text, not long reading |
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
#EEF8F7
oklch(97.1% 0.011 189.8)
-
Step 100
100
#DAEFED
oklch(93.6% 0.022 189.9)
-
Step 200
200
#B9E3DF
oklch(88.5% 0.044 189.3)
-
Step 300
300
#82D2CA
oklch(81% 0.08 187.6)
-
Step 400
400 (this color)
#17C7BD
oklch(74.9% 0.127 188.3)
-
Step 500
500
#009E96
oklch(63% 0.109 188.5)
-
Step 600
600
#00857E
oklch(55.6% 0.097 188.3)
-
Step 700
700
#00706A
oklch(49.1% 0.085 188.3)
-
Step 800
800
#005C57
oklch(42.8% 0.074 188.4)
-
Step 900
900
#004C48
oklch(37.6% 0.065 188.7)
-
Step 950
950
#002E2B
oklch(27.1% 0.047 188)
#17C7BD 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) | #BBBCBD | 0.134 |
| Deuteranopia (no green cones) | #A5ACBE | 0.126 |
| Tritanopia (no blue cones) | #00CCC4 | 0.015 |
| Achromatopsia (no color) | #B2B2B2 | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17C7BD
#17C7BD
oklch(74.9% 0.127 188.3)
- #F18A9E
#F18A9E
oklch(74.9% 0.127 8.1)
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 #17C7BD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Turquoise #00CED1 ΔE 0.030
- Topaz #13BBAF ΔE 0.035
- Medium Turquoise #48D1CC ΔE 0.040
- Medium Aquamarine #66CDAA ΔE 0.052
- Light Sea Green #20B2AA ΔE 0.059
- Seafoam Blue #78D1B6 ΔE 0.066
- Greeny Blue #42B395 ΔE 0.066
- Pale Teal #82CBB2 ΔE 0.067
Use #17C7BD 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.