#12C8A6
Closest named color: Greenblue (#23C48B). oklch(74.4% 0.139 174.4), rgb(18, 200, 166).
Aa
Black text reads best on this color (9.83:1).
About this color
#12C8A6 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 74%, its chroma 0.139 and its hue 174°. Its hue sits on the cool side of the wheel. The nearest named color is Greenblue (#23C48B), ΔE 0.035 away. Black text reads best on it, at 9.83:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | Greenblue (#23C48B) |
| Black text | 9.83:1 |
| White text | 2.13:1 |
Values
| HEX | #12C8A6 |
| RGB | rgb(18, 200, 166) |
| HSL | hsl(169, 83%, 43%) |
| OKLCH | oklch(74.4% 0.139 174.4) |
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 #12C8A6 | 2.13:1 | Fails | Lc -45.9 | Large or bold text, headings |
| Black text on #12C8A6 | 9.83:1 | AAA | Lc 62.7 | Content text, not long reading |
| #12C8A6 text on white | 2.13:1 | Fails | Lc 41.3 | Non-text elements, placeholder text |
| #12C8A6 text on black | 9.83:1 | AAA | Lc -61.0 | 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
#B9E4D7
oklch(88.5% 0.048 174.8)
-
Step 300
300
#82D3BD
oklch(80.8% 0.086 174.8)
-
Step 400
400 (this color)
#12C8A6
oklch(74.4% 0.139 174.4)
-
Step 500
500
#00A084
oklch(63% 0.119 174.3)
-
Step 600
600
#00876F
oklch(55.6% 0.106 174.3)
-
Step 700
700
#00715D
oklch(49% 0.093 174.7)
-
Step 800
800
#005D4C
oklch(42.7% 0.081 174.6)
-
Step 900
900
#004E3F
oklch(37.8% 0.072 174.1)
-
Step 950
950
#002E25
oklch(26.9% 0.05 175.6)
#12C8A6 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) | #C1BAA4 | 0.145 |
| Deuteranopia (no green cones) | #ACABA9 | 0.139 |
| Tritanopia (no blue cones) | #00CABE | 0.033 |
| Achromatopsia (no color) | #B1B1B1 | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #12C8A6
#12C8A6
oklch(74.4% 0.139 174.4)
- #EF85B2
#EF85B2
oklch(74.4% 0.139 354.1)
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 #12C8A6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greenblue #23C48B ΔE 0.035
- Green Blue #01C08D ΔE 0.037
- Emerald #06D6A0 ΔE 0.044
- Topaz #13BBAF ΔE 0.044
- Medium Aquamarine #66CDAA ΔE 0.045
- Greeny Blue #42B395 ΔE 0.057
- Dark Turquoise #00CED1 ΔE 0.060
- Medium Turquoise #48D1CC ΔE 0.061
Use #12C8A6 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.