#12DEE3
Closest named color: Aqua Blue (#02D8E9). oklch(81.8% 0.137 197.7), rgb(18, 222, 227).
Aa
Black text reads best on this color (12.58:1).
About this color
#12DEE3 is a light, moderately saturated teal or cyan. In OKLCH its lightness is 82%, its chroma 0.137 and its hue 198°. Its hue sits on the cool side of the wheel. The nearest named color is Aqua Blue (#02D8E9), ΔE 0.022 away. Black text reads best on it, at 12.58:1.
| Hue family | Teals and cyans |
| Lightness | light (82%) |
| Chroma | moderately saturated (0.137) |
| Temperature | cool |
| Nearest name | Aqua Blue (#02D8E9) |
| Black text | 12.58:1 |
| White text | 1.66:1 |
Values
| HEX | #12DEE3 |
| RGB | rgb(18, 222, 227) |
| HSL | hsl(181, 85%, 48%) |
| OKLCH | oklch(81.8% 0.137 197.7) |
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 #12DEE3 | 1.66:1 | Fails | Lc -32.4 | Non-text elements, placeholder text |
| Black text on #12DEE3 | 12.58:1 | AAA | Lc 75.1 | Fine for body text |
| #12DEE3 text on white | 1.66:1 | Fails | Lc 28.7 | Dividers and decoration only |
| #12DEE3 text on black | 12.58:1 | AAA | Lc -74.1 | 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
#E8FAFA
oklch(97.2% 0.019 196.8)
-
Step 100
100
#CCF3F3
oklch(93.7% 0.04 196.5)
-
Step 200
200
#9BE9EB
oklch(88.4% 0.077 197.9)
-
Step 300
300 (this color)
#12DEE3
oklch(81.8% 0.137 197.7)
-
Step 400
400
#00B7BB
oklch(70.7% 0.12 197.6)
-
Step 500
500
#009DA1
oklch(63.2% 0.107 198)
-
Step 600
600
#008487
oklch(55.6% 0.095 197.6)
-
Step 700
700
#006F72
oklch(49.2% 0.084 198.1)
-
Step 800
800
#005B5D
oklch(42.7% 0.073 197.4)
-
Step 900
900
#004C4E
oklch(37.8% 0.064 197.8)
-
Step 950
950
#002D2E
oklch(27% 0.046 197.1)
#12DEE3 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) | #CDD3E4 | 0.141 |
| Deuteranopia (no green cones) | #B4C0E4 | 0.132 |
| Tritanopia (no blue cones) | #00E6DF | 0.025 |
| Achromatopsia (no color) | #C8C8C8 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #12DEE3
#12DEE3
oklch(81.8% 0.137 197.7)
- #FFA8AB
#FFA8AB
oklch(81.8% 0.103 17.3)
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 #12DEE3, closest first.
No curated palette has a color within ΔE 0.04 of #12DEE3.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Blue #02D8E9 ΔE 0.022
- Turquoise #40E0D0 ΔE 0.031
- Medium Turquoise #48D1CC ΔE 0.040
- Dark Turquoise #00CED1 ΔE 0.046
- Vivid Sky Blue #4CC9F0 ΔE 0.068
- Robin's Egg #6DEDFD ΔE 0.069
- Seafoam Blue #78D1B6 ΔE 0.069
- Bright Light Blue #26F7FD ΔE 0.071
Use #12DEE3 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.