#17A3BF
Closest named color: Turquoise Blue (#06B1C4). oklch(66.1% 0.114 216.4), rgb(23, 163, 191).
Aa
Black text reads best on this color (7.02:1).
About this color
#17A3BF is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 66%, its chroma 0.114 and its hue 216°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.039 away. Black text reads best on it, at 7.02:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.114) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 7.02:1 |
| White text | 2.98:1 |
Values
| HEX | #17A3BF |
| RGB | rgb(23, 163, 191) |
| HSL | hsl(190, 79%, 42%) |
| OKLCH | oklch(66.1% 0.114 216.4) |
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 #17A3BF | 2.98:1 | Fails | Lc -61.3 | Content text, not long reading |
| Black text on #17A3BF | 7.02:1 | AAA | Lc 48.0 | Large or bold text, headings |
| #17A3BF text on white | 2.98:1 | Fails | Lc 56.0 | Large or bold text, headings |
| #17A3BF text on black | 7.02:1 | AAA | Lc -45.8 | 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
#F0F7F9
oklch(97.1% 0.008 216.6)
-
Step 100
100
#DFEDF1
oklch(93.7% 0.016 216.7)
-
Step 200
200
#C3DFE6
oklch(88.5% 0.031 214.5)
-
Step 300
300
#98CAD8
oklch(80.9% 0.056 216.9)
-
Step 400
400
#58AFC4
oklch(70.8% 0.089 215.6)
-
Step 500
500 (this color)
#17A3BF
oklch(66.1% 0.114 216.4)
-
Step 600
600
#008198
oklch(55.6% 0.099 216.1)
-
Step 700
700
#006C80
oklch(49% 0.087 216.4)
-
Step 800
800
#00596A
oklch(42.8% 0.076 216.6)
-
Step 900
900
#004A58
oklch(37.7% 0.067 215.8)
-
Step 950
950
#012C35
oklch(27% 0.047 215.7)
#17A3BF 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) | #909EC1 | 0.099 |
| Deuteranopia (no green cones) | #7B8FBF | 0.088 |
| Tritanopia (no blue cones) | #00ADAC | 0.047 |
| Achromatopsia (no color) | #959595 | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17A3BF
#17A3BF
oklch(66.1% 0.114 216.4)
- #CE7860
#CE7860
oklch(66.1% 0.114 36.4)
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 #17A3BF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.039
- Cadet Blue #5F9EA0 ΔE 0.056
- Light Sea Green #20B2AA ΔE 0.062
- Sea #3C9992 ΔE 0.065
- Greyblue #77A1B5 ΔE 0.067
- Teal Green #0A9396 ΔE 0.069
- Persian Green #2A9D8F ΔE 0.070
- Blue NCS #118AB2 ΔE 0.072
Use #17A3BF 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.