#00665B
Closest named color: Dark Green Blue (#1F6357). oklch(45.8% 0.082 182.2), rgb(0, 102, 91).
Aa
White text reads best on this color (6.88:1).
About this color
#00665B is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 46%, its chroma 0.082 and its hue 182°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.013 away. White text reads best on it, at 6.88:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 3.05:1 |
| White text | 6.88:1 |
Values
| HEX | #00665B |
| RGB | rgb(0, 102, 91) |
| HSL | hsl(174, 100%, 20%) |
| OKLCH | oklch(45.8% 0.082 182.2) |
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 #00665B | 6.88:1 | AA | Lc -88.3 | Fine for body text |
| Black text on #00665B | 3.05:1 | AA large text | Lc 20.8 | Dividers and decoration only |
| #00665B text on white | 6.88:1 | AA | Lc 83.3 | Fine for body text |
| #00665B text on black | 3.05:1 | AA large text | Lc -18.7 | 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
#E0EDEA
oklch(93.6% 0.014 180.7)
-
Step 200
200
#C7DFDA
oklch(88.4% 0.026 181.8)
-
Step 300
300
#9FCBC3
oklch(80.8% 0.048 182.7)
-
Step 400
400
#67B1A4
oklch(70.8% 0.077 181.5)
-
Step 500
500
#329D8E
oklch(63.2% 0.098 181.9)
-
Step 600
600
#008678
oklch(55.6% 0.1 182.2)
-
Step 700
700
#007165
oklch(49.2% 0.088 182.2)
-
Step 800
800 (this color)
#00665B
oklch(45.8% 0.082 182.2)
-
Step 900
900
#094C44
oklch(37.6% 0.063 182.5)
-
Step 950
950
#0A2D28
oklch(27.1% 0.041 182)
#00665B 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) | #615F5B | 0.088 |
| Deuteranopia (no green cones) | #55575C | 0.082 |
| Tritanopia (no blue cones) | #006863 | 0.013 |
| Achromatopsia (no color) | #5A5A5A | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00665B
#00665B
oklch(45.8% 0.082 182.2)
- #7D4354
#7D4354
oklch(45.9% 0.082 2.1)
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 #00665B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.013
- Dark Aqua #05696B ΔE 0.026
- Petrol #005F6A ΔE 0.039
- Dark Aquamarine #017371 ΔE 0.047
- Deep Turquoise #017374 ΔE 0.050
- Spruce #0A5F38 ΔE 0.052
- Pine #2B5D34 ΔE 0.056
- Deep Teal #00555A ΔE 0.056
Use #00665B 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.