#18856B
Closest named color: Sea Green (#2E8B57). oklch(55.2% 0.101 171.7), rgb(24, 133, 107).
Aa
Black text reads best on this color (4.60:1).
About this color
#18856B is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 55%, its chroma 0.101 and its hue 172°. Its hue sits on the cool side of the wheel. The nearest named color is Sea Green (#2E8B57), ΔE 0.040 away. Black text reads best on it, at 4.60:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 4.60:1 |
| White text | 4.55:1 |
Values
| HEX | #18856B |
| RGB | rgb(24, 133, 107) |
| HSL | hsl(166, 69%, 31%) |
| OKLCH | oklch(55.2% 0.101 171.7) |
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 #18856B | 4.55:1 | AA | Lc -76.7 | Fine for body text |
| Black text on #18856B | 4.60:1 | AA | Lc 32.8 | Non-text elements, placeholder text |
| #18856B text on white | 4.55:1 | AA | Lc 71.2 | Content text, not long reading |
| #18856B text on black | 4.60:1 | AA | Lc -30.4 | Non-text elements, placeholder text |
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 600.
-
Step 50
50
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E2EDE9
oklch(93.7% 0.013 172.4)
-
Step 200
200
#C9DFD7
oklch(88.5% 0.026 171.9)
-
Step 300
300
#A4CBBD
oklch(81% 0.046 171.3)
-
Step 400
400
#70B09B
oklch(70.8% 0.073 171.4)
-
Step 500
500
#449C83
oklch(63.2% 0.093 171.9)
-
Step 600
600 (this color)
#18856B
oklch(55.2% 0.101 171.7)
-
Step 700
700
#05725A
oklch(49.2% 0.095 171.3)
-
Step 800
800
#0E5D4A
oklch(42.8% 0.078 171.6)
-
Step 900
900
#174C3E
oklch(37.7% 0.061 172.2)
-
Step 950
950
#102D24
oklch(27.2% 0.039 170.4)
#18856B 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) | #817C6A | 0.104 |
| Deuteranopia (no green cones) | #73726D | 0.099 |
| Tritanopia (no blue cones) | #00867E | 0.028 |
| Achromatopsia (no color) | #767676 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18856B
#18856B
oklch(55.2% 0.101 171.7)
- #9F5879
#9F5879
oklch(55.3% 0.102 351.7)
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 #18856B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.040
- Viridian #1E9167 ΔE 0.040
- Teal #008080 ΔE 0.041
- Dark Cyan #008B8B ΔE 0.047
- Bluegreen #017A79 ΔE 0.047
- Dark Sage #598556 ΔE 0.053
- Jungle Green #048243 ΔE 0.057
- Deep Aqua #08787F ΔE 0.059
Use #18856B 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.