#066898
Closest named color: Peacock Blue (#016795). oklch(49.3% 0.109 239.2), rgb(6, 104, 152).
Aa
White text reads best on this color (6.10:1).
About this color
#066898 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.109 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Peacock Blue (#016795), ΔE 0.006 away. White text reads best on it, at 6.10:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.109) |
| Temperature | cool |
| Nearest name | Peacock Blue (#016795) |
| Black text | 3.44:1 |
| White text | 6.10:1 |
Values
| HEX | #066898 |
| RGB | rgb(6, 104, 152) |
| HSL | hsl(200, 92%, 31%) |
| OKLCH | oklch(49.3% 0.109 239.2) |
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 #066898 | 6.10:1 | AA | Lc -85.1 | Fine for body text |
| Black text on #066898 | 3.44:1 | AA large text | Lc 24.1 | Dividers and decoration only |
| #066898 text on white | 6.10:1 | AA | Lc 79.9 | Fine for body text |
| #066898 text on black | 3.44:1 | AA large text | Lc -21.9 | 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
#6DA8D0
oklch(70.7% 0.085 239.2)
-
Step 500
500
#4292C4
oklch(63.2% 0.108 239.2)
-
Step 600
600
#197BB0
oklch(55.5% 0.117 239.2)
-
Step 700
700 (this color)
#066898
oklch(49.3% 0.109 239.2)
-
Step 800
800
#0D557B
oklch(42.8% 0.09 238.8)
-
Step 900
900
#164663
oklch(37.7% 0.071 239.4)
-
Step 950
950
#0F293A
oklch(26.9% 0.045 240)
#066898 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) | #51699A | 0.057 |
| Deuteranopia (no green cones) | #3E5D97 | 0.044 |
| Tritanopia (no blue cones) | #007479 | 0.071 |
| Achromatopsia (no color) | #626262 | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #066898
#066898
oklch(49.3% 0.109 239.2)
- #8D4F10
#8D4F10
oklch(49.1% 0.109 59.2)
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 #066898, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Peacock Blue #016795 ΔE 0.006
- Ocean Blue #03719C ΔE 0.027
- Denim #3B638C ΔE 0.034
- Sea Blue #047495 ΔE 0.038
- Light Navy Blue #2E5A88 ΔE 0.044
- Denim Blue #3B5B92 ΔE 0.045
- Muted Blue #3B719F ΔE 0.045
- Mid Blue #276AB3 ΔE 0.047
Use #066898 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.