#0A666D
Closest named color: Dark Aqua (#05696B). oklch(46.6% 0.077 203.4), rgb(10, 102, 109).
Aa
White text reads best on this color (6.70:1).
About this color
#0A666D is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 47%, its chroma 0.077 and its hue 203°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aqua (#05696B), ΔE 0.011 away. White text reads best on it, at 6.70:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Dark Aqua (#05696B) |
| Black text | 3.13:1 |
| White text | 6.70:1 |
Values
| HEX | #0A666D |
| RGB | rgb(10, 102, 109) |
| HSL | hsl(184, 83%, 23%) |
| OKLCH | oklch(46.6% 0.077 203.4) |
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 #0A666D | 6.70:1 | AA | Lc -87.7 | Fine for body text |
| Black text on #0A666D | 3.13:1 | AA large text | Lc 21.4 | Dividers and decoration only |
| #0A666D text on white | 6.70:1 | AA | Lc 82.6 | Fine for body text |
| #0A666D text on black | 3.13:1 | AA large text | Lc -19.3 | 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 700.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECED
oklch(93.6% 0.011 204.1)
-
Step 200
200
#CADDDF
oklch(88.4% 0.021 204.4)
-
Step 300
300
#A6C8CB
oklch(80.9% 0.037 203)
-
Step 400
400
#73ACB1
oklch(70.7% 0.06 202.9)
-
Step 500
500
#4B979E
oklch(63.1% 0.076 203.4)
-
Step 600
600
#278189
oklch(55.5% 0.083 203.7)
-
Step 700
700 (this color)
#0A666D
oklch(46.6% 0.077 203.4)
-
Step 800
800
#18595F
oklch(42.7% 0.064 204)
-
Step 900
900
#1C494D
oklch(37.6% 0.049 203.3)
-
Step 950
950
#122B2D
oklch(27% 0.031 202.3)
#0A666D 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) | #5D616E | 0.077 |
| Deuteranopia (no green cones) | #50586D | 0.070 |
| Tritanopia (no blue cones) | #006B68 | 0.020 |
| Achromatopsia (no color) | #5C5C5C | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A666D
#0A666D
oklch(46.6% 0.077 203.4)
- #7F4845
#7F4845
oklch(46.6% 0.076 23.7)
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 #0A666D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aqua #05696B ΔE 0.011
- Petrol #005F6A ΔE 0.023
- Dark Green Blue #1F6357 ΔE 0.034
- Deep Turquoise #017374 ΔE 0.040
- Dark Aquamarine #017371 ΔE 0.040
- Deep Aqua #08787F ΔE 0.057
- Deep Teal #00555A ΔE 0.057
- YInMn Blue #415A77 ΔE 0.059
Use #0A666D 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.