#12B6A3
Closest named color: Light Sea Green (#20B2AA). oklch(69.8% 0.123 181.8), rgb(18, 182, 163).
Aa
Black text reads best on this color (8.24:1).
About this color
#12B6A3 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 70%, its chroma 0.123 and its hue 182°. Its hue sits on the cool side of the wheel. The nearest named color is Light Sea Green (#20B2AA), ΔE 0.018 away. Black text reads best on it, at 8.24:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.123) |
| Temperature | cool |
| Nearest name | Light Sea Green (#20B2AA) |
| Black text | 8.24:1 |
| White text | 2.54:1 |
Values
| HEX | #12B6A3 |
| RGB | rgb(18, 182, 163) |
| HSL | hsl(173, 82%, 39%) |
| OKLCH | oklch(69.8% 0.123 181.8) |
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 #12B6A3 | 2.54:1 | Fails | Lc -54.4 | Large or bold text, headings |
| Black text on #12B6A3 | 8.24:1 | AAA | Lc 54.7 | Large or bold text, headings |
| #12B6A3 text on white | 2.54:1 | Fails | Lc 49.3 | Large or bold text, headings |
| #12B6A3 text on black | 8.24:1 | AAA | Lc -52.6 | 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
#EEF8F6
oklch(97.1% 0.011 182.9)
-
Step 100
100
#DBEFEB
oklch(93.6% 0.022 182.5)
-
Step 200
200
#BBE3DB
oklch(88.5% 0.043 181.8)
-
Step 300
300
#87D1C4
oklch(80.8% 0.076 182)
-
Step 400
400 (this color)
#12B6A3
oklch(69.8% 0.123 181.8)
-
Step 500
500
#009F8E
oklch(63% 0.113 181.8)
-
Step 600
600
#008677
oklch(55.6% 0.1 181.4)
-
Step 700
700
#007164
oklch(49.2% 0.089 181.2)
-
Step 800
800
#005C52
oklch(42.6% 0.076 182.2)
-
Step 900
900
#004D44
oklch(37.7% 0.068 181.7)
-
Step 950
950
#002E28
oklch(27% 0.049 181.5)
#12B6A3 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) | #ADABA2 | 0.130 |
| Deuteranopia (no green cones) | #9A9CA5 | 0.125 |
| Tritanopia (no blue cones) | #00BAB0 | 0.019 |
| Achromatopsia (no color) | #A2A2A2 | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #12B6A3
#12B6A3
oklch(69.8% 0.123 181.8)
- #DC7B98
#DC7B98
oklch(69.7% 0.124 1.7)
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 #12B6A3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Sea Green #20B2AA ΔE 0.018
- Topaz #13BBAF ΔE 0.020
- Greeny Blue #42B395 ΔE 0.023
- Green Blue #01C08D ΔE 0.050
- Turquoise Blue #06B1C4 ΔE 0.056
- Bluey Green #2BB179 ΔE 0.056
- Dark Seafoam #1FB57A ΔE 0.057
- Dark Seafoam Green #3EAF76 ΔE 0.059
Use #12B6A3 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.