#066D52
Closest named color: Dark Green Blue (#1F6357). oklch(47.6% 0.095 168), rgb(6, 109, 82).
Aa
White text reads best on this color (6.33:1).
About this color
#066D52 is a medium-dark, moderately saturated green. In OKLCH its lightness is 48%, its chroma 0.095 and its hue 168°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.036 away. White text reads best on it, at 6.33:1.
| Hue family | Greens |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.095) |
| Temperature | in between |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 3.31:1 |
| White text | 6.33:1 |
Values
| HEX | #066D52 |
| RGB | rgb(6, 109, 82) |
| HSL | hsl(164, 90%, 23%) |
| OKLCH | oklch(47.6% 0.095 168) |
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 #066D52 | 6.33:1 | AA | Lc -86.1 | Fine for body text |
| Black text on #066D52 | 3.31:1 | AA large text | Lc 23.0 | Dividers and decoration only |
| #066D52 text on white | 6.33:1 | AA | Lc 81.0 | Fine for body text |
| #066D52 text on black | 3.31:1 | AA large text | Lc -20.9 | 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
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E2EDE8
oklch(93.6% 0.013 167.2)
-
Step 200
200
#CADFD6
oklch(88.5% 0.026 168.2)
-
Step 300
300
#A5CBBB
oklch(81% 0.046 167.7)
-
Step 400
400
#72B098
oklch(70.8% 0.074 167.9)
-
Step 500
500
#489C7F
oklch(63.2% 0.094 168.1)
-
Step 600
600
#228668
oklch(55.6% 0.101 168.2)
-
Step 700
700 (this color)
#066D52
oklch(47.6% 0.095 168)
-
Step 800
800
#145C47
oklch(42.6% 0.077 168.7)
-
Step 900
900
#1A4C3B
oklch(37.7% 0.061 167.5)
-
Step 950
950
#112C23
oklch(26.9% 0.037 169.3)
#066D52 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) | #6A6551 | 0.095 |
| Deuteranopia (no green cones) | #5E5C54 | 0.092 |
| Tritanopia (no blue cones) | #006E65 | 0.029 |
| Achromatopsia (no color) | #606060 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #066D52
#066D52
oklch(47.6% 0.095 168)
- #834566
#834566
oklch(47.7% 0.095 348.1)
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 #066D52, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.036
- Dark Aqua #05696B ΔE 0.046
- Dark Aquamarine #017371 ΔE 0.048
- Spruce #0A5F38 ΔE 0.051
- Deep Turquoise #017374 ΔE 0.052
- Pine #2B5D34 ΔE 0.055
- Bluegreen #017A79 ΔE 0.064
- Dark Olive Green #556B2F ΔE 0.069
Use #066D52 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.