#306CA0
Closest named color: Muted Blue (#3B719F). oklch(51.6% 0.103 247.6), rgb(48, 108, 160).
Aa
White text reads best on this color (5.55:1).
About this color
#306CA0 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.103 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Muted Blue (#3B719F), ΔE 0.019 away. White text reads best on it, at 5.55:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Muted Blue (#3B719F) |
| Black text | 3.77:1 |
| White text | 5.55:1 |
Values
| HEX | #306CA0 |
| RGB | rgb(48, 108, 160) |
| HSL | hsl(208, 54%, 41%) |
| OKLCH | oklch(51.6% 0.103 247.6) |
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 #306CA0 | 5.55:1 | AA | Lc -82.8 | Fine for body text |
| Black text on #306CA0 | 3.77:1 | AA large text | Lc 26.6 | Dividers and decoration only |
| #306CA0 text on white | 5.55:1 | AA | Lc 77.5 | Fine for body text |
| #306CA0 text on black | 3.77:1 | AA large text | Lc -24.3 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CBDBEB
oklch(88.4% 0.028 248.1)
-
Step 300
300
#A8C4E0
oklch(80.9% 0.05 248.4)
-
Step 400
400
#78A5D0
oklch(70.6% 0.08 247.9)
-
Step 500
500
#538FC4
oklch(63.2% 0.102 246.9)
-
Step 600
600
#3678B1
oklch(55.7% 0.111 247.5)
-
Step 700
700 (this color)
#306CA0
oklch(51.6% 0.103 247.6)
-
Step 800
800
#23527B
oklch(42.6% 0.085 247.7)
-
Step 900
900
#224463
oklch(37.6% 0.067 248)
-
Step 950
950
#15283A
oklch(27% 0.042 248.4)
#306CA0 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) | #556EA2 | 0.040 |
| Deuteranopia (no green cones) | #45639F | 0.030 |
| Tritanopia (no blue cones) | #00787F | 0.076 |
| Achromatopsia (no color) | #686868 | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #306CA0
#306CA0
oklch(51.6% 0.103 247.6)
- #8F5B18
#8F5B18
oklch(51.7% 0.104 67.5)
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 #306CA0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muted Blue #3B719F ΔE 0.019
- Ocean Blue #03719C ΔE 0.025
- Flat Blue #3C73A8 ΔE 0.026
- French Blue #436BAD ΔE 0.029
- Mid Blue #276AB3 ΔE 0.032
- Peacock Blue #016795 ΔE 0.034
- Denim #3B638C ΔE 0.036
- Sea Blue #047495 ΔE 0.038
Use #306CA0 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.