#2A666B
Closest named color: Dark Aqua (#05696B). oklch(47.3% 0.062 202.8), rgb(42, 102, 107).
Aa
White text reads best on this color (6.53:1).
About this color
#2A666B is a medium-dark, muted teal or cyan. In OKLCH its lightness is 47%, its chroma 0.062 and its hue 203°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aqua (#05696B), ΔE 0.019 away. White text reads best on it, at 6.53:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.062) |
| Temperature | cool |
| Nearest name | Dark Aqua (#05696B) |
| Black text | 3.21:1 |
| White text | 6.53:1 |
Values
| HEX | #2A666B |
| RGB | rgb(42, 102, 107) |
| HSL | hsl(185, 44%, 29%) |
| OKLCH | oklch(47.3% 0.062 202.8) |
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 #2A666B | 6.53:1 | AA | Lc -87.3 | Fine for body text |
| Black text on #2A666B | 3.21:1 | AA large text | Lc 21.8 | Dividers and decoration only |
| #2A666B text on white | 6.53:1 | AA | Lc 82.2 | Fine for body text |
| #2A666B text on black | 3.21:1 | AA large text | Lc -19.7 | 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 700.
-
Step 50
50
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E4ECEC
oklch(93.7% 0.009 197)
-
Step 200
200
#CDDDDE
oklch(88.6% 0.017 201.4)
-
Step 300
300
#ABC7C9
oklch(81% 0.03 201.9)
-
Step 400
400
#7DAAAE
oklch(70.7% 0.048 203)
-
Step 500
500
#5B959A
oklch(63.2% 0.061 202.8)
-
Step 600
600
#3E7F84
oklch(55.6% 0.067 202.1)
-
Step 700
700 (this color)
#2A666B
oklch(47.3% 0.062 202.8)
-
Step 800
800
#29575B
oklch(42.6% 0.051 202.9)
-
Step 900
900
#26484B
oklch(37.7% 0.04 203)
-
Step 950
950
#172A2C
oklch(27% 0.025 204.3)
#2A666B 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) | #5F626B | 0.063 |
| Deuteranopia (no green cones) | #545A6B | 0.057 |
| Tritanopia (no blue cones) | #006A67 | 0.024 |
| Achromatopsia (no color) | #5D5D5D | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A666B
#2A666B
oklch(47.3% 0.062 202.8)
- #7B4E4B
#7B4E4B
oklch(47.4% 0.062 23.8)
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 #2A666B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aqua #05696B ΔE 0.019
- Petrol #005F6A ΔE 0.033
- Dark Green Blue #1F6357 ΔE 0.034
- Deep Turquoise #017374 ΔE 0.039
- Dark Aquamarine #017371 ΔE 0.040
- Slate #516572 ΔE 0.045
- YInMn Blue #415A77 ΔE 0.052
- Deep Aqua #08787F ΔE 0.055
Use #2A666B 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.