#306191
Closest named color: Denim (#3B638C). oklch(48.1% 0.094 250), rgb(48, 97, 145).
Aa
White text reads best on this color (6.47:1).
About this color
#306191 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.094 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.016 away. White text reads best on it, at 6.47:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.24:1 |
| White text | 6.47:1 |
Values
| HEX | #306191 |
| RGB | rgb(48, 97, 145) |
| HSL | hsl(210, 50%, 38%) |
| OKLCH | oklch(48.1% 0.094 250) |
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 #306191 | 6.47:1 | AA | Lc -87.0 | Fine for body text |
| Black text on #306191 | 3.24:1 | AA large text | Lc 22.1 | Dividers and decoration only |
| #306191 text on white | 6.47:1 | AA | Lc 81.9 | Fine for body text |
| #306191 text on black | 3.24:1 | AA large text | Lc -20.0 | 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
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CDDBEA
oklch(88.5% 0.026 250)
-
Step 300
300
#ABC4DE
oklch(81% 0.046 249.4)
-
Step 400
400
#7EA5CD
oklch(70.8% 0.073 249.5)
-
Step 500
500
#5C8EC0
oklch(63.2% 0.093 249.5)
-
Step 600
600
#4177AC
oklch(55.6% 0.101 249.7)
-
Step 700
700 (this color)
#306191
oklch(48.1% 0.094 250)
-
Step 800
800
#2B5278
oklch(42.8% 0.078 249.5)
-
Step 900
900
#274461
oklch(37.8% 0.061 249.7)
-
Step 950
950
#172839
oklch(27.1% 0.039 249.5)
#306191 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) | #4C6393 | 0.033 |
| Deuteranopia (no green cones) | #3F5A90 | 0.023 |
| Tritanopia (no blue cones) | #006C72 | 0.073 |
| Achromatopsia (no color) | #5E5E5E | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #306191
#306191
oklch(48.1% 0.094 250)
- #805316
#805316
oklch(48.2% 0.094 69.2)
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 #306191, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.016
- Denim Blue #3B5B92 ΔE 0.020
- Light Navy Blue #2E5A88 ΔE 0.023
- Peacock Blue #016795 ΔE 0.026
- Dusky Blue #475F94 ΔE 0.026
- Dusk Blue #26538D ΔE 0.044
- YInMn Blue #415A77 ΔE 0.044
- Ocean Blue #03719C ΔE 0.047
Use #306191 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.