#006559
Closest named color: Dark Green Blue (#1F6357). oklch(45.4% 0.082 181), rgb(0, 101, 89).
Aa
White text reads best on this color (6.98:1).
About this color
#006559 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 45%, its chroma 0.082 and its hue 181°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.012 away. White text reads best on it, at 6.98:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 3.00:1 |
| White text | 6.98:1 |
Values
| HEX | #006559 |
| RGB | rgb(0, 101, 89) |
| HSL | hsl(173, 100%, 20%) |
| OKLCH | oklch(45.4% 0.082 181) |
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 #006559 | 6.98:1 | AA | Lc -88.6 | Fine for body text |
| Black text on #006559 | 3.00:1 | AA large text | Lc 20.4 | Dividers and decoration only |
| #006559 text on white | 6.98:1 | AA | Lc 83.7 | Fine for body text |
| #006559 text on black | 3.00:1 | AA large text | Lc -18.3 | 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
#F1F7F6
oklch(97.1% 0.006 185.3)
-
Step 100
100
#E1EDEA
oklch(93.6% 0.013 179.5)
-
Step 200
200
#C7DFDA
oklch(88.4% 0.026 181.8)
-
Step 300
300
#9FCBC2
oklch(80.8% 0.048 181.1)
-
Step 400
400
#67B1A3
oklch(70.8% 0.077 180.4)
-
Step 500
500
#339D8D
oklch(63.2% 0.098 181)
-
Step 600
600
#008677
oklch(55.6% 0.1 181.4)
-
Step 700
700
#007163
oklch(49.2% 0.089 180.3)
-
Step 800
800 (this color)
#006559
oklch(45.4% 0.082 181)
-
Step 900
900
#0A4C43
oklch(37.6% 0.064 181)
-
Step 950
950
#0A2D27
oklch(27% 0.041 179.5)
#006559 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) | #605E59 | 0.087 |
| Deuteranopia (no green cones) | #54565A | 0.081 |
| Tritanopia (no blue cones) | #006761 | 0.013 |
| Achromatopsia (no color) | #595959 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #006559
#006559
oklch(45.4% 0.082 181)
- #7B4254
#7B4254
oklch(45.4% 0.081 0.6)
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 #006559, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.012
- Dark Aqua #05696B ΔE 0.029
- Petrol #005F6A ΔE 0.039
- Spruce #0A5F38 ΔE 0.049
- Dark Aquamarine #017371 ΔE 0.051
- Pine #2B5D34 ΔE 0.053
- Deep Turquoise #017374 ΔE 0.054
- Deep Teal #00555A ΔE 0.054
Use #006559 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.