#066F90
Closest named color: Sea Blue (#047495). oklch(50.6% 0.097 227.7), rgb(6, 111, 144).
Aa
White text reads best on this color (5.69:1).
About this color
#066F90 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 51%, its chroma 0.097 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Sea Blue (#047495), ΔE 0.016 away. White text reads best on it, at 5.69:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Sea Blue (#047495) |
| Black text | 3.68:1 |
| White text | 5.69:1 |
Values
| HEX | #066F90 |
| RGB | rgb(6, 111, 144) |
| HSL | hsl(194, 92%, 29%) |
| OKLCH | oklch(50.6% 0.097 227.7) |
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 #066F90 | 5.69:1 | AA | Lc -83.3 | Fine for body text |
| Black text on #066F90 | 3.68:1 | AA large text | Lc 26.1 | Dividers and decoration only |
| #066F90 text on white | 5.69:1 | AA | Lc 78.0 | Fine for body text |
| #066F90 text on black | 3.68:1 | AA large text | Lc -23.8 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF1
oklch(93.6% 0.014 226.6)
-
Step 200
200
#C8DDE7
oklch(88.5% 0.026 227.9)
-
Step 300
300
#A2C7D9
oklch(80.9% 0.047 229)
-
Step 400
400
#6DAAC5
oklch(70.7% 0.074 227.8)
-
Step 500
500
#4095B7
oklch(63.2% 0.096 227.6)
-
Step 600
600
#117EA3
oklch(55.5% 0.105 228.3)
-
Step 700
700 (this color)
#066F90
oklch(50.6% 0.097 227.7)
-
Step 800
800
#085771
oklch(42.7% 0.08 227.5)
-
Step 900
900
#14485B
oklch(37.7% 0.062 226.7)
-
Step 950
950
#0E2A36
oklch(27% 0.04 229.1)
#066F90 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) | #5D6D92 | 0.069 |
| Deuteranopia (no green cones) | #4D6190 | 0.061 |
| Tritanopia (no blue cones) | #00787A | 0.052 |
| Achromatopsia (no color) | #666666 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #066F90
#066F90
oklch(50.6% 0.097 227.7)
- #915230
#915230
oklch(50.6% 0.097 47.8)
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 #066F90, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Blue #047495 ΔE 0.016
- Ocean Blue #03719C ΔE 0.019
- Peacock Blue #016795 ΔE 0.028
- Ocean #017B92 ΔE 0.036
- Muted Blue #3B719F ΔE 0.041
- Denim #3B638C ΔE 0.042
- Deep Aqua #08787F ΔE 0.045
- Deep Turquoise #017374 ΔE 0.051
Use #066F90 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.