#0661A3
Closest named color: Peacock Blue (#016795). oklch(48.2% 0.129 248.7), rgb(6, 97, 163).
Aa
White text reads best on this color (6.46:1).
About this color
#0661A3 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.129 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Peacock Blue (#016795), ΔE 0.032 away. White text reads best on it, at 6.46:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Peacock Blue (#016795) |
| Black text | 3.24:1 |
| White text | 6.46:1 |
Values
| HEX | #0661A3 |
| RGB | rgb(6, 97, 163) |
| HSL | hsl(205, 93%, 33%) |
| OKLCH | oklch(48.2% 0.129 248.7) |
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 #0661A3 | 6.46:1 | AA | Lc -86.6 | Fine for body text |
| Black text on #0661A3 | 3.24:1 | AA large text | Lc 22.5 | Dividers and decoration only |
| #0661A3 text on white | 6.46:1 | AA | Lc 81.5 | Fine for body text |
| #0661A3 text on black | 3.24:1 | AA large text | Lc -20.4 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C8DCF0
oklch(88.6% 0.035 248.2)
-
Step 300
300
#A2C5E8
oklch(81% 0.062 248.6)
-
Step 400
400
#6DA6DC
oklch(70.7% 0.1 248.1)
-
Step 500
500
#438ED3
oklch(63.1% 0.128 248.9)
-
Step 600
600
#1D77C0
oklch(55.6% 0.139 248.6)
-
Step 700
700 (this color)
#0661A3
oklch(48.2% 0.129 248.7)
-
Step 800
800
#105286
oklch(42.8% 0.106 248.2)
-
Step 900
900
#17446C
oklch(37.7% 0.084 248.9)
-
Step 950
950
#0F283F
oklch(27% 0.053 248.7)
#0661A3 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) | #4065A6 | 0.042 |
| Deuteranopia (no green cones) | #2758A2 | 0.027 |
| Tritanopia (no blue cones) | #00717A | 0.092 |
| Achromatopsia (no color) | #5E5E5E | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0661A3
#0661A3
oklch(48.2% 0.129 248.7)
- #845100
#845100
oklch(48.2% 0.105 68.6)
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 #0661A3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Peacock Blue #016795 ΔE 0.032
- Mid Blue #276AB3 ΔE 0.040
- Denim Blue #3B5B92 ΔE 0.041
- Light Navy Blue #2E5A88 ΔE 0.046
- Dusk Blue #26538D ΔE 0.048
- Denim #3B638C ΔE 0.050
- Dusky Blue #475F94 ΔE 0.050
- Ocean Blue #03719C ΔE 0.051
Use #0661A3 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.