#066161
Closest named color: Petrol (#005F6A). oklch(44.7% 0.075 194.8), rgb(6, 97, 97).
Aa
White text reads best on this color (7.26:1).
About this color
#066161 is a dark, moderately saturated teal or cyan. In OKLCH its lightness is 45%, its chroma 0.075 and its hue 195°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.018 away. White text reads best on it, at 7.26:1.
| Hue family | Teals and cyans |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.89:1 |
| White text | 7.26:1 |
Values
| HEX | #066161 |
| RGB | rgb(6, 97, 97) |
| HSL | hsl(180, 88%, 20%) |
| OKLCH | oklch(44.7% 0.075 194.8) |
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 #066161 | 7.26:1 | AAA | Lc -89.7 | Fine for body text |
| Black text on #066161 | 2.89:1 | Fails | Lc 19.2 | Dividers and decoration only |
| #066161 text on white | 7.26:1 | AAA | Lc 84.8 | Fine for body text |
| #066161 text on black | 2.89:1 | Fails | Lc -17.2 | 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
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#E1EDEC
oklch(93.7% 0.013 190.9)
-
Step 200
200
#C8DEDE
oklch(88.4% 0.023 196.7)
-
Step 300
300
#A1CAC9
oklch(80.9% 0.043 194.5)
-
Step 400
400
#6AAFAE
oklch(70.8% 0.07 194.5)
-
Step 500
500
#399A9A
oklch(63% 0.089 195.1)
-
Step 600
600
#008484
oklch(55.5% 0.095 194.8)
-
Step 700
700
#006F6F
oklch(49% 0.084 194.8)
-
Step 800
800 (this color)
#066161
oklch(44.7% 0.075 194.8)
-
Step 900
900
#0F4B4B
oklch(37.7% 0.058 195)
-
Step 950
950
#0C2C2C
oklch(27% 0.037 195.2)
#066161 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) | #5A5C61 | 0.078 |
| Deuteranopia (no green cones) | #4E5362 | 0.073 |
| Tritanopia (no blue cones) | #006461 | 0.010 |
| Achromatopsia (no color) | #575757 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #066161
#066161
oklch(44.7% 0.075 194.8)
- #784247
#784247
oklch(44.6% 0.075 14.6)
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 #066161, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.018
- Dark Green Blue #1F6357 ΔE 0.022
- Dark Aqua #05696B ΔE 0.027
- Deep Teal #00555A ΔE 0.039
- Dark Blue Green #005249 ΔE 0.056
- Dark Aquamarine #017371 ΔE 0.057
- Dark Slate Gray #2F4F4F ΔE 0.057
- Deep Turquoise #017374 ΔE 0.058
Use #066161 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.