#18787B
Closest named color: Deep Aqua (#08787F). oklch(52.3% 0.083 198.2), rgb(24, 120, 123).
Aa
White text reads best on this color (5.23:1).
About this color
#18787B is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 52%, its chroma 0.083 and its hue 198°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Aqua (#08787F), ΔE 0.007 away. White text reads best on it, at 5.23:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Deep Aqua (#08787F) |
| Black text | 4.01:1 |
| White text | 5.23:1 |
Values
| HEX | #18787B |
| RGB | rgb(24, 120, 123) |
| HSL | hsl(182, 67%, 29%) |
| OKLCH | oklch(52.3% 0.083 198.2) |
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 #18787B | 5.23:1 | AA | Lc -81.0 | Fine for body text |
| Black text on #18787B | 4.01:1 | AA large text | Lc 28.5 | Dividers and decoration only |
| #18787B text on white | 5.23:1 | AA | Lc 75.6 | Fine for body text |
| #18787B text on black | 4.01:1 | AA large text | Lc -26.1 | Dividers and decoration only |
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 700.
-
Step 50
50
#F2F7F7
oklch(97.2% 0.005 197.1)
-
Step 100
100
#E1ECED
oklch(93.5% 0.012 203.5)
-
Step 200
200
#C9DEDE
oklch(88.5% 0.022 196.8)
-
Step 300
300
#A3C9CA
oklch(80.9% 0.04 198.4)
-
Step 400
400
#6FADAF
oklch(70.6% 0.064 198.4)
-
Step 500
500
#43999B
oklch(63.2% 0.082 197.4)
-
Step 600
600
#188386
oklch(55.6% 0.089 197.9)
-
Step 700
700 (this color)
#18787B
oklch(52.3% 0.083 198.2)
-
Step 800
800
#0D5A5D
oklch(42.7% 0.069 199.1)
-
Step 900
900
#174A4C
oklch(37.7% 0.053 198.8)
-
Step 950
950
#0F2C2C
oklch(27.1% 0.035 195.3)
#18787B 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) | #6F727B | 0.085 |
| Deuteranopia (no green cones) | #61687C | 0.079 |
| Tritanopia (no blue cones) | #007D79 | 0.017 |
| Achromatopsia (no color) | #6C6C6C | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18787B
#18787B
oklch(52.3% 0.083 198.2)
- #935557
#935557
oklch(52.2% 0.083 18.2)
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 #18787B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Aqua #08787F ΔE 0.007
- Bluegreen #017A79 ΔE 0.010
- Deep Turquoise #017374 ΔE 0.020
- Dark Aquamarine #017371 ΔE 0.022
- Teal #008080 ΔE 0.023
- Ocean #017B92 ΔE 0.035
- Sea Blue #047495 ΔE 0.047
- Dark Aqua #05696B ΔE 0.050
Use #18787B 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.