#066497
Closest named color: Peacock Blue (#016795). oklch(48.2% 0.112 241.7), rgb(6, 100, 151).
Aa
White text reads best on this color (6.40:1).
About this color
#066497 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.112 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Peacock Blue (#016795), ΔE 0.010 away. White text reads best on it, at 6.40:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | Peacock Blue (#016795) |
| Black text | 3.27:1 |
| White text | 6.40:1 |
Values
| HEX | #066497 |
| RGB | rgb(6, 100, 151) |
| HSL | hsl(201, 92%, 31%) |
| OKLCH | oklch(48.2% 0.112 241.7) |
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 #066497 | 6.40:1 | AA | Lc -86.4 | Fine for body text |
| Black text on #066497 | 3.27:1 | AA large text | Lc 22.8 | Dividers and decoration only |
| #066497 text on white | 6.40:1 | AA | Lc 81.3 | Fine for body text |
| #066497 text on black | 3.27:1 | AA large text | Lc -20.6 | 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
#E1EBF4
oklch(93.5% 0.016 245.1)
-
Step 200
200
#C9DCEC
oklch(88.5% 0.03 243.4)
-
Step 300
300
#A3C6E1
oklch(81% 0.054 241.5)
-
Step 400
400
#6EA7D2
oklch(70.6% 0.087 242.1)
-
Step 500
500
#4491C6
oklch(63.1% 0.11 241.6)
-
Step 600
600
#1E7AB3
oklch(55.6% 0.12 242)
-
Step 700
700 (this color)
#066497
oklch(48.2% 0.112 241.7)
-
Step 800
800
#11547D
oklch(42.7% 0.093 241.8)
-
Step 900
900
#184664
oklch(37.8% 0.071 241.1)
-
Step 950
950
#10293B
oklch(27.1% 0.046 242.4)
#066497 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) | #4B6599 | 0.052 |
| Deuteranopia (no green cones) | #385996 | 0.040 |
| Tritanopia (no blue cones) | #007176 | 0.076 |
| Achromatopsia (no color) | #5F5F5F | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #066497
#066497
oklch(48.2% 0.112 241.7)
- #8A4D00
#8A4D00
oklch(48.3% 0.111 61.6)
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 #066497, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Peacock Blue #016795 ΔE 0.010
- Denim #3B638C ΔE 0.035
- Light Navy Blue #2E5A88 ΔE 0.036
- Denim Blue #3B5B92 ΔE 0.038
- Ocean Blue #03719C ΔE 0.038
- Dusky Blue #475F94 ΔE 0.046
- Dusk Blue #26538D ΔE 0.049
- Sea Blue #047495 ΔE 0.050
Use #066497 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.