#066A77
Closest named color: Dark Aqua (#05696B). oklch(48.1% 0.082 209.7), rgb(6, 106, 119).
Aa
White text reads best on this color (6.29:1).
About this color
#066A77 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 48%, its chroma 0.082 and its hue 210°. 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 6.29:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Dark Aqua (#05696B) |
| Black text | 3.33:1 |
| White text | 6.29:1 |
Values
| HEX | #066A77 |
| RGB | rgb(6, 106, 119) |
| HSL | hsl(187, 90%, 25%) |
| OKLCH | oklch(48.1% 0.082 209.7) |
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 #066A77 | 6.29:1 | AA | Lc -86.0 | Fine for body text |
| Black text on #066A77 | 3.33:1 | AA large text | Lc 23.2 | Dividers and decoration only |
| #066A77 text on white | 6.29:1 | AA | Lc 80.9 | Fine for body text |
| #066A77 text on black | 3.33:1 | AA large text | Lc -21.0 | 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
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#C9DDE1
oklch(88.4% 0.022 211)
-
Step 300
300
#A4C8CF
oklch(80.9% 0.04 210.7)
-
Step 400
400
#71ACB6
oklch(70.8% 0.063 209.3)
-
Step 500
500
#4697A4
oklch(63.1% 0.081 209.3)
-
Step 600
600
#1F818F
oklch(55.6% 0.088 209.4)
-
Step 700
700 (this color)
#066A77
oklch(48.1% 0.082 209.7)
-
Step 800
800
#125963
oklch(42.7% 0.068 209.2)
-
Step 900
900
#194951
oklch(37.7% 0.053 210.3)
-
Step 950
950
#102B2F
oklch(27% 0.033 208.2)
#066A77 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) | #5F6678 | 0.077 |
| Deuteranopia (no green cones) | #515C77 | 0.069 |
| Tritanopia (no blue cones) | #00706E | 0.028 |
| Achromatopsia (no color) | #606060 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #066A77
#066A77
oklch(48.1% 0.082 209.7)
- #864B42
#864B42
oklch(48.1% 0.082 29.6)
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 #066A77, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aqua #05696B ΔE 0.019
- Deep Turquoise #017374 ΔE 0.031
- Dark Aquamarine #017371 ΔE 0.033
- Petrol #005F6A ΔE 0.037
- Deep Aqua #08787F ΔE 0.043
- Dark Green Blue #1F6357 ΔE 0.050
- Bluegreen #017A79 ΔE 0.050
- Sea Blue #047495 ΔE 0.051
Use #066A77 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.