#18C8A2
Closest named color: Greenblue (#23C48B). oklch(74.4% 0.141 172.2), rgb(24, 200, 162).
Aa
Black text reads best on this color (9.82:1).
About this color
#18C8A2 is a medium-light, vivid teal or cyan. In OKLCH its lightness is 74%, its chroma 0.141 and its hue 172°. Its hue sits on the cool side of the wheel. The nearest named color is Greenblue (#23C48B), ΔE 0.030 away. Black text reads best on it, at 9.82:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (74%) |
| Chroma | vivid (0.141) |
| Temperature | cool |
| Nearest name | Greenblue (#23C48B) |
| Black text | 9.82:1 |
| White text | 2.13:1 |
Values
| HEX | #18C8A2 |
| RGB | rgb(24, 200, 162) |
| HSL | hsl(167, 79%, 44%) |
| OKLCH | oklch(74.4% 0.141 172.2) |
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 #18C8A2 | 2.13:1 | Fails | Lc -46.0 | Large or bold text, headings |
| Black text on #18C8A2 | 9.82:1 | AAA | Lc 62.6 | Content text, not long reading |
| #18C8A2 text on white | 2.13:1 | Fails | Lc 41.4 | Non-text elements, placeholder text |
| #18C8A2 text on black | 9.82:1 | AAA | Lc -60.9 | 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
#EEF8F4
oklch(97.1% 0.012 170.3)
-
Step 100
100
#DAF0E8
oklch(93.7% 0.025 171.9)
-
Step 200
200
#B9E4D5
oklch(88.4% 0.049 171.9)
-
Step 300
300
#83D3BA
oklch(80.8% 0.087 172.1)
-
Step 400
400 (this color)
#18C8A2
oklch(74.4% 0.141 172.2)
-
Step 500
500
#00A181
oklch(63.2% 0.122 172)
-
Step 600
600
#00876C
oklch(55.5% 0.108 172.1)
-
Step 700
700
#00725B
oklch(49.2% 0.095 172.3)
-
Step 800
800
#005D4A
oklch(42.6% 0.082 172.5)
-
Step 900
900
#004E3D
oklch(37.8% 0.073 171.8)
-
Step 950
950
#002E24
oklch(26.9% 0.051 173.7)
#18C8A2 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) | #C1BAA0 | 0.144 |
| Deuteranopia (no green cones) | #ADABA5 | 0.139 |
| Tritanopia (no blue cones) | #00CABD | 0.037 |
| Achromatopsia (no color) | #B1B1B1 | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18C8A2
#18C8A2
oklch(74.4% 0.141 172.2)
- #EE84B5
#EE84B5
oklch(74.3% 0.141 351.9)
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 #18C8A2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greenblue #23C48B ΔE 0.030
- Green Blue #01C08D ΔE 0.033
- Emerald #06D6A0 ΔE 0.042
- Medium Aquamarine #66CDAA ΔE 0.046
- Topaz #13BBAF ΔE 0.048
- Greeny Blue #42B395 ΔE 0.057
- Dark Mint #48C072 ΔE 0.059
- Dark Mint Green #20C073 ΔE 0.061
Use #18C8A2 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.