#306389
Closest named color: Denim (#3B638C). oklch(48.2% 0.082 243.2), rgb(48, 99, 137).
Aa
White text reads best on this color (6.41:1).
About this color
#306389 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.082 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.012 away. White text reads best on it, at 6.41:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.27:1 |
| White text | 6.41:1 |
Values
| HEX | #306389 |
| RGB | rgb(48, 99, 137) |
| HSL | hsl(206, 48%, 36%) |
| OKLCH | oklch(48.2% 0.082 243.2) |
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 #306389 | 6.41:1 | AA | Lc -86.8 | Fine for body text |
| Black text on #306389 | 3.27:1 | AA large text | Lc 22.4 | Dividers and decoration only |
| #306389 text on white | 6.41:1 | AA | Lc 81.7 | Fine for body text |
| #306389 text on black | 3.27:1 | AA large text | Lc -20.2 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CDDBE7
oklch(88.4% 0.022 243.8)
-
Step 300
300
#ABC4D9
oklch(80.8% 0.04 243.6)
-
Step 400
400
#7EA6C6
oklch(70.8% 0.064 242.9)
-
Step 500
500
#5C8FB7
oklch(63% 0.082 243.2)
-
Step 600
600
#4179A3
oklch(55.6% 0.088 243)
-
Step 700
700 (this color)
#306389
oklch(48.2% 0.082 243.2)
-
Step 800
800
#2B5371
oklch(42.7% 0.067 242.9)
-
Step 900
900
#27455C
oklch(37.8% 0.053 243)
-
Step 950
950
#172836
oklch(26.9% 0.035 244.4)
#306389 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) | #52648B | 0.040 |
| Deuteranopia (no green cones) | #465B88 | 0.031 |
| Tritanopia (no blue cones) | #006C70 | 0.062 |
| Achromatopsia (no color) | #5F5F5F | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #306389
#306389
oklch(48.2% 0.082 243.2)
- #7F5328
#7F5328
oklch(48.2% 0.083 62.9)
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 #306389, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.012
- Peacock Blue #016795 ΔE 0.027
- Light Navy Blue #2E5A88 ΔE 0.028
- Denim Blue #3B5B92 ΔE 0.032
- Dusky Blue #475F94 ΔE 0.034
- YInMn Blue #415A77 ΔE 0.036
- Ocean Blue #03719C ΔE 0.046
- Sea Blue #047495 ΔE 0.050
Use #306389 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.