#12C1BB
Closest named color: Topaz (#13BBAF). oklch(73.3% 0.124 190.8), rgb(18, 193, 187).
Aa
Black text reads best on this color (9.37:1).
About this color
#12C1BB is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 73%, its chroma 0.124 and its hue 191°. Its hue sits on the cool side of the wheel. The nearest named color is Topaz (#13BBAF), ΔE 0.021 away. Black text reads best on it, at 9.37:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | Topaz (#13BBAF) |
| Black text | 9.37:1 |
| White text | 2.24:1 |
Values
| HEX | #12C1BB |
| RGB | rgb(18, 193, 187) |
| HSL | hsl(178, 83%, 41%) |
| OKLCH | oklch(73.3% 0.124 190.8) |
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 #12C1BB | 2.24:1 | Fails | Lc -48.3 | Large or bold text, headings |
| Black text on #12C1BB | 9.37:1 | AAA | Lc 60.4 | Content text, not long reading |
| #12C1BB text on white | 2.24:1 | Fails | Lc 43.6 | Non-text elements, placeholder text |
| #12C1BB text on black | 9.37:1 | AAA | Lc -58.6 | 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 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
#BAE3E0
oklch(88.6% 0.043 190.9)
-
Step 300
300
#83D1CC
oklch(80.9% 0.077 190.5)
-
Step 400
400 (this color)
#12C1BB
oklch(73.3% 0.124 190.8)
-
Step 500
500
#009E99
oklch(63.1% 0.109 190.8)
-
Step 600
600
#008580
oklch(55.7% 0.096 190.1)
-
Step 700
700
#00706C
oklch(49.2% 0.085 190.4)
-
Step 800
800
#005B58
oklch(42.5% 0.073 190.9)
-
Step 900
900
#004C4A
oklch(37.6% 0.065 191.7)
-
Step 950
950
#002D2C
oklch(26.9% 0.046 192.5)
#12C1BB 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) | #B5B6BB | 0.131 |
| Deuteranopia (no green cones) | #9FA7BC | 0.122 |
| Tritanopia (no blue cones) | #00C7BF | 0.016 |
| Achromatopsia (no color) | #ADADAD | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #12C1BB
#12C1BB
oklch(73.3% 0.124 190.8)
- #EB8696
#EB8696
oklch(73.3% 0.124 10.5)
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 #12C1BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Topaz #13BBAF ΔE 0.021
- Dark Turquoise #00CED1 ΔE 0.042
- Light Sea Green #20B2AA ΔE 0.043
- Turquoise Blue #06B1C4 ΔE 0.053
- Medium Turquoise #48D1CC ΔE 0.054
- Greeny Blue #42B395 ΔE 0.056
- Medium Aquamarine #66CDAA ΔE 0.064
- Green Blue #01C08D ΔE 0.066
Use #12C1BB 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.