#18616E
Closest named color: Petrol (#005F6A). oklch(45.5% 0.071 212.4), rgb(24, 97, 110).
Aa
White text reads best on this color (7.06:1).
About this color
#18616E is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 46%, its chroma 0.071 and its hue 212°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.013 away. White text reads best on it, at 7.06:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.97:1 |
| White text | 7.06:1 |
Values
| HEX | #18616E |
| RGB | rgb(24, 97, 110) |
| HSL | hsl(189, 64%, 26%) |
| OKLCH | oklch(45.5% 0.071 212.4) |
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 #18616E | 7.06:1 | AAA | Lc -89.1 | Fine for body text |
| Black text on #18616E | 2.97:1 | Fails | Lc 19.9 | Dividers and decoration only |
| #18616E text on white | 7.06:1 | AAA | Lc 84.2 | Fine for body text |
| #18616E text on black | 2.97:1 | Fails | Lc -17.8 | 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 800.
-
Step 50
50
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECEF
oklch(93.6% 0.012 215.8)
-
Step 200
200
#C9DEE2
oklch(88.6% 0.023 210.4)
-
Step 300
300
#A3C8D0
oklch(80.9% 0.041 212.3)
-
Step 400
400
#6EACB9
oklch(70.7% 0.066 212.4)
-
Step 500
500
#4197A8
oklch(63.1% 0.085 212.7)
-
Step 600
600
#158193
oklch(55.6% 0.092 212.5)
-
Step 700
700
#006D7D
oklch(49.1% 0.086 212.3)
-
Step 800
800 (this color)
#18616E
oklch(45.5% 0.071 212.4)
-
Step 900
900
#164953
oklch(37.7% 0.055 213.2)
-
Step 950
950
#0F2B30
oklch(27% 0.035 210.9)
#18616E 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) | #575D6F | 0.066 |
| Deuteranopia (no green cones) | #4B556E | 0.059 |
| Tritanopia (no blue cones) | #006665 | 0.026 |
| Achromatopsia (no color) | #585858 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18616E
#18616E
oklch(45.5% 0.071 212.4)
- #79473D
#79473D
oklch(45.4% 0.071 32.1)
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 #18616E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.013
- Dark Aqua #05696B ΔE 0.028
- Dark Green Blue #1F6357 ΔE 0.041
- YInMn Blue #415A77 ΔE 0.046
- Deep Teal #00555A ΔE 0.048
- Deep Turquoise #017374 ΔE 0.055
- Dark Aquamarine #017371 ΔE 0.056
- Light Navy Blue #2E5A88 ΔE 0.057
Use #18616E 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.