#0366A0
Closest named color: Peacock Blue (#016795). oklch(49.2% 0.121 244.3), rgb(3, 102, 160).
Aa
White text reads best on this color (6.15:1).
About this color
#0366A0 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.121 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Peacock Blue (#016795), ΔE 0.019 away. White text reads best on it, at 6.15:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | Peacock Blue (#016795) |
| Black text | 3.41:1 |
| White text | 6.15:1 |
Values
| HEX | #0366A0 |
| RGB | rgb(3, 102, 160) |
| HSL | hsl(202, 96%, 32%) |
| OKLCH | oklch(49.2% 0.121 244.3) |
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 #0366A0 | 6.15:1 | AA | Lc -85.3 | Fine for body text |
| Black text on #0366A0 | 3.41:1 | AA large text | Lc 23.9 | Dividers and decoration only |
| #0366A0 text on white | 6.15:1 | AA | Lc 80.1 | Fine for body text |
| #0366A0 text on black | 3.41:1 | AA large text | Lc -21.7 | 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
#E1EBF5
oklch(93.5% 0.017 248)
-
Step 200
200
#C8DCEE
oklch(88.5% 0.033 245.3)
-
Step 300
300
#A1C5E4
oklch(80.8% 0.059 244.6)
-
Step 400
400
#6CA7D7
oklch(70.7% 0.094 244.2)
-
Step 500
500
#4090CC
oklch(63% 0.119 244.1)
-
Step 600
600
#1779B9
oklch(55.5% 0.13 244.3)
-
Step 700
700 (this color)
#0366A0
oklch(49.2% 0.121 244.3)
-
Step 800
800
#0C5381
oklch(42.6% 0.1 244.3)
-
Step 900
900
#154568
oklch(37.7% 0.079 244.5)
-
Step 950
950
#0E293D
oklch(27.1% 0.05 243.6)
#0366A0 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) | #4A68A2 | 0.050 |
| Deuteranopia (no green cones) | #345C9F | 0.035 |
| Tritanopia (no blue cones) | #00747B | 0.083 |
| Achromatopsia (no color) | #616161 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0366A0
#0366A0
oklch(49.2% 0.121 244.3)
- #8B5100
#8B5100
oklch(49.2% 0.111 64.6)
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 #0366A0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Peacock Blue #016795 ΔE 0.019
- Ocean Blue #03719C ΔE 0.035
- Mid Blue #276AB3 ΔE 0.037
- Denim #3B638C ΔE 0.042
- Denim Blue #3B5B92 ΔE 0.043
- Light Navy Blue #2E5A88 ΔE 0.047
- Dusky Blue #475F94 ΔE 0.048
- Muted Blue #3B719F ΔE 0.049
Use #0366A0 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.