#12AA9A
Closest named color: Light Sea Green (#20B2AA). oklch(66.4% 0.116 183), rgb(18, 170, 154).
Aa
Black text reads best on this color (7.24:1).
About this color
#12AA9A is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 66%, its chroma 0.116 and its hue 183°. Its hue sits on the cool side of the wheel. The nearest named color is Light Sea Green (#20B2AA), ΔE 0.030 away. Black text reads best on it, at 7.24:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Light Sea Green (#20B2AA) |
| Black text | 7.24:1 |
| White text | 2.89:1 |
Values
| HEX | #12AA9A |
| RGB | rgb(18, 170, 154) |
| HSL | hsl(174, 81%, 37%) |
| OKLCH | oklch(66.4% 0.116 183) |
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 #12AA9A | 2.89:1 | Fails | Lc -60.1 | Content text, not long reading |
| Black text on #12AA9A | 7.24:1 | AAA | Lc 49.3 | Large or bold text, headings |
| #12AA9A text on white | 2.89:1 | Fails | Lc 54.8 | Large or bold text, headings |
| #12AA9A text on black | 7.24:1 | AAA | Lc -47.0 | 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
#F0F7F6
oklch(97.1% 0.008 186.9)
-
Step 100
100
#DFEEEB
oklch(93.7% 0.016 182.7)
-
Step 200
200
#C3E0DB
oklch(88.4% 0.031 184.1)
-
Step 300
300
#98CDC4
oklch(80.9% 0.056 183.3)
-
Step 400
400
#57B3A6
oklch(70.7% 0.09 183.3)
-
Step 500
500 (this color)
#12AA9A
oklch(66.4% 0.116 183)
-
Step 600
600
#008679
oklch(55.7% 0.099 183.1)
-
Step 700
700
#007065
oklch(49% 0.087 183.1)
-
Step 800
800
#005C53
oklch(42.6% 0.076 183.4)
-
Step 900
900
#004D45
oklch(37.7% 0.067 183.1)
-
Step 950
950
#002E29
oklch(27.1% 0.048 183.6)
#12AA9A 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) | #A19F99 | 0.122 |
| Deuteranopia (no green cones) | #8F929C | 0.117 |
| Tritanopia (no blue cones) | #00AEA5 | 0.017 |
| Achromatopsia (no color) | #989898 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #12AA9A
#12AA9A
oklch(66.4% 0.116 183)
- #CD748C
#CD748C
oklch(66.4% 0.114 3.4)
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 #12AA9A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Sea Green #20B2AA ΔE 0.030
- Persian Green #2A9D8F ΔE 0.036
- Greeny Blue #42B395 ΔE 0.038
- Blue Green #0F9B8E ΔE 0.044
- Sea #3C9992 ΔE 0.048
- Dull Teal #5F9E8F ΔE 0.049
- Topaz #13BBAF ΔE 0.051
- Jade #1FA774 ΔE 0.053
Use #12AA9A 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.