#12DDD2
Closest named color: Turquoise (#40E0D0). oklch(81% 0.139 188.4), rgb(18, 221, 210).
Aa
Black text reads best on this color (12.29:1).
About this color
#12DDD2 is a light, moderately saturated teal or cyan. In OKLCH its lightness is 81%, its chroma 0.139 and its hue 188°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise (#40E0D0), ΔE 0.017 away. Black text reads best on it, at 12.29:1.
| Hue family | Teals and cyans |
| Lightness | light (81%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | Turquoise (#40E0D0) |
| Black text | 12.29:1 |
| White text | 1.70:1 |
Values
| HEX | #12DDD2 |
| RGB | rgb(18, 221, 210) |
| HSL | hsl(177, 85%, 47%) |
| OKLCH | oklch(81% 0.139 188.4) |
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 #12DDD2 | 1.70:1 | Fails | Lc -33.7 | Non-text elements, placeholder text |
| Black text on #12DDD2 | 12.29:1 | AAA | Lc 73.8 | Content text, not long reading |
| #12DDD2 text on white | 1.70:1 | Fails | Lc 30.0 | Dividers and decoration only |
| #12DDD2 text on black | 12.29:1 | AAA | Lc -72.8 | 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 300.
-
Step 50
50
#E8FAF8
oklch(97.1% 0.019 188.8)
-
Step 100
100
#CDF3EF
oklch(93.6% 0.04 188.7)
-
Step 200
200
#9CEAE3
oklch(88.5% 0.077 188.7)
-
Step 300
300 (this color)
#12DDD2
oklch(81% 0.139 188.4)
-
Step 400
400
#00B9AF
oklch(70.8% 0.123 188)
-
Step 500
500
#009E96
oklch(63% 0.109 188.5)
-
Step 600
600
#00857E
oklch(55.6% 0.097 188.3)
-
Step 700
700
#00706A
oklch(49.1% 0.085 188.3)
-
Step 800
800
#005C57
oklch(42.8% 0.074 188.4)
-
Step 900
900
#004C48
oklch(37.6% 0.065 188.7)
-
Step 950
950
#002E2B
oklch(27.1% 0.047 188)
#12DDD2 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) | #D0D0D2 | 0.147 |
| Deuteranopia (no green cones) | #B8BFD4 | 0.138 |
| Tritanopia (no blue cones) | #00E3D9 | 0.017 |
| Achromatopsia (no color) | #C6C6C6 | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #12DDD2
#12DDD2
oklch(81% 0.139 188.4)
- #FFA2B3
#FFA2B3
oklch(81% 0.112 8)
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 #12DDD2, closest first.
No curated palette has a color within ΔE 0.04 of #12DDD2.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise #40E0D0 ΔE 0.017
- Medium Turquoise #48D1CC ΔE 0.033
- Aqua Blue #02D8E9 ΔE 0.040
- Dark Turquoise #00CED1 ΔE 0.043
- Aqua Marine #2EE8BB ΔE 0.052
- Seafoam Blue #78D1B6 ΔE 0.056
- Medium Aquamarine #66CDAA ΔE 0.061
- Emerald #06D6A0 ΔE 0.068
Use #12DDD2 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.