#03609B
Closest named color: Peacock Blue (#016795). oklch(47.4% 0.121 246), rgb(3, 96, 155).
Aa
White text reads best on this color (6.66:1).
About this color
#03609B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.121 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Peacock Blue (#016795), ΔE 0.025 away. White text reads best on it, at 6.66:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | Peacock Blue (#016795) |
| Black text | 3.15:1 |
| White text | 6.66:1 |
Values
| HEX | #03609B |
| RGB | rgb(3, 96, 155) |
| HSL | hsl(203, 96%, 31%) |
| OKLCH | oklch(47.4% 0.121 246) |
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 #03609B | 6.66:1 | AA | Lc -87.4 | Fine for body text |
| Black text on #03609B | 3.15:1 | AA large text | Lc 21.7 | Dividers and decoration only |
| #03609B text on white | 6.66:1 | AA | Lc 82.3 | Fine for body text |
| #03609B text on black | 3.15:1 | AA large text | Lc -19.6 | 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
#E1EBF5
oklch(93.5% 0.017 248)
-
Step 200
200
#C8DCEE
oklch(88.5% 0.033 245.3)
-
Step 300
300
#A2C5E5
oklch(80.9% 0.059 246.2)
-
Step 400
400
#6EA6D8
oklch(70.6% 0.094 246.5)
-
Step 500
500
#448FCD
oklch(63% 0.12 246.2)
-
Step 600
600
#1F78BA
oklch(55.5% 0.13 246.3)
-
Step 700
700 (this color)
#03609B
oklch(47.4% 0.121 246)
-
Step 800
800
#125382
oklch(42.8% 0.1 245.8)
-
Step 900
900
#184568
oklch(37.8% 0.077 245.6)
-
Step 950
950
#10283D
oklch(26.9% 0.05 247.3)
#03609B 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) | #43639D | 0.046 |
| Deuteranopia (no green cones) | #2D579A | 0.030 |
| Tritanopia (no blue cones) | #006E76 | 0.083 |
| Achromatopsia (no color) | #5C5C5C | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #03609B
#03609B
oklch(47.4% 0.121 246)
- #834E00
#834E00
oklch(47.5% 0.105 66.4)
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 #03609B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Peacock Blue #016795 ΔE 0.025
- Light Navy Blue #2E5A88 ΔE 0.036
- Denim Blue #3B5B92 ΔE 0.036
- Dusk Blue #26538D ΔE 0.040
- Denim #3B638C ΔE 0.044
- Dusky Blue #475F94 ΔE 0.049
- Deep Sea Blue #015482 ΔE 0.050
- Mid Blue #276AB3 ΔE 0.050
Use #03609B 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.