#15C7A9
Closest named color: Topaz (#13BBAF). oklch(74.3% 0.136 176.4), rgb(21, 199, 169).
Aa
Black text reads best on this color (9.77:1).
About this color
#15C7A9 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 74%, its chroma 0.136 and its hue 176°. Its hue sits on the cool side of the wheel. The nearest named color is Topaz (#13BBAF), ΔE 0.039 away. Black text reads best on it, at 9.77:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.136) |
| Temperature | cool |
| Nearest name | Topaz (#13BBAF) |
| Black text | 9.77:1 |
| White text | 2.14:1 |
Values
| HEX | #15C7A9 |
| RGB | rgb(21, 199, 169) |
| HSL | hsl(170, 81%, 43%) |
| OKLCH | oklch(74.3% 0.136 176.4) |
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 #15C7A9 | 2.14:1 | Fails | Lc -46.3 | Large or bold text, headings |
| Black text on #15C7A9 | 9.77:1 | AAA | Lc 62.3 | Content text, not long reading |
| #15C7A9 text on white | 2.14:1 | Fails | Lc 41.6 | Non-text elements, placeholder text |
| #15C7A9 text on black | 9.77:1 | AAA | Lc -60.6 | 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
#EEF8F5
oklch(97.1% 0.011 176.3)
-
Step 100
100
#DAF0E9
oklch(93.7% 0.025 174.7)
-
Step 200
200
#B9E4D8
oklch(88.5% 0.048 176.3)
-
Step 300
300
#82D3BF
oklch(80.9% 0.085 176.5)
-
Step 400
400 (this color)
#15C7A9
oklch(74.3% 0.136 176.4)
-
Step 500
500
#00A087
oklch(63.1% 0.118 176.3)
-
Step 600
600
#008771
oklch(55.7% 0.104 175.8)
-
Step 700
700
#00715F
oklch(49% 0.091 176.5)
-
Step 800
800
#005D4E
oklch(42.8% 0.079 176.7)
-
Step 900
900
#004D40
oklch(37.6% 0.07 176.4)
-
Step 950
950
#002E26
oklch(26.9% 0.05 177.5)
#15C7A9 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) | #BFBAA8 | 0.142 |
| Deuteranopia (no green cones) | #AAABAB | 0.135 |
| Tritanopia (no blue cones) | #00CABE | 0.029 |
| Achromatopsia (no color) | #B1B1B1 | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #15C7A9
#15C7A9
oklch(74.3% 0.136 176.4)
- #EE85AE
#EE85AE
oklch(74.2% 0.136 356.1)
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 #15C7A9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Topaz #13BBAF ΔE 0.039
- Greenblue #23C48B ΔE 0.040
- Green Blue #01C08D ΔE 0.040
- Medium Aquamarine #66CDAA ΔE 0.046
- Emerald #06D6A0 ΔE 0.049
- Greeny Blue #42B395 ΔE 0.055
- Dark Turquoise #00CED1 ΔE 0.055
- Medium Turquoise #48D1CC ΔE 0.059
Use #15C7A9 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.