#066A9B
Closest named color: Peacock Blue (#016795). oklch(49.9% 0.111 239.3), rgb(6, 106, 155).
Aa
White text reads best on this color (5.92:1).
About this color
#066A9B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.111 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Peacock Blue (#016795), ΔE 0.012 away. White text reads best on it, at 5.92:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.111) |
| Temperature | cool |
| Nearest name | Peacock Blue (#016795) |
| Black text | 3.54:1 |
| White text | 5.92:1 |
Values
| HEX | #066A9B |
| RGB | rgb(6, 106, 155) |
| HSL | hsl(200, 93%, 32%) |
| OKLCH | oklch(49.9% 0.111 239.3) |
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 #066A9B | 5.92:1 | AA | Lc -84.3 | Fine for body text |
| Black text on #066A9B | 3.54:1 | AA large text | Lc 25.0 | Dividers and decoration only |
| #066A9B text on white | 5.92:1 | AA | Lc 79.1 | Fine for body text |
| #066A9B text on black | 3.54:1 | AA large text | Lc -22.7 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1ECF3
oklch(93.7% 0.015 235.4)
-
Step 200
200
#C8DCEB
oklch(88.4% 0.03 240.2)
-
Step 300
300
#A2C6E0
oklch(80.9% 0.053 239.7)
-
Step 400
400
#6CA8D1
oklch(70.6% 0.087 239.5)
-
Step 500
500
#4092C5
oklch(63.2% 0.11 239.3)
-
Step 600
600
#157BB1
oklch(55.5% 0.119 239.3)
-
Step 700
700 (this color)
#066A9B
oklch(49.9% 0.111 239.3)
-
Step 800
800
#0B557C
oklch(42.8% 0.092 239.2)
-
Step 900
900
#154663
oklch(37.6% 0.071 239.1)
-
Step 950
950
#0E293A
oklch(26.9% 0.046 239.3)
#066A9B 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) | #526B9D | 0.057 |
| Deuteranopia (no green cones) | #3F5E9A | 0.045 |
| Tritanopia (no blue cones) | #00767B | 0.072 |
| Achromatopsia (no color) | #646464 | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #066A9B
#066A9B
oklch(49.9% 0.111 239.3)
- #905110
#905110
oklch(49.9% 0.111 59.5)
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 #066A9B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Peacock Blue #016795 ΔE 0.012
- Ocean Blue #03719C ΔE 0.021
- Sea Blue #047495 ΔE 0.034
- Denim #3B638C ΔE 0.037
- Muted Blue #3B719F ΔE 0.040
- Mid Blue #276AB3 ΔE 0.043
- Flat Blue #3C73A8 ΔE 0.048
- Denim Blue #3B5B92 ΔE 0.048
Use #066A9B 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.