#306A9C
Closest named color: Muted Blue (#3B719F). oklch(50.9% 0.1 247.3), rgb(48, 106, 156).
Aa
White text reads best on this color (5.72:1).
About this color
#306A9C is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.100 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Muted Blue (#3B719F), ΔE 0.024 away. White text reads best on it, at 5.72:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Muted Blue (#3B719F) |
| Black text | 3.66:1 |
| White text | 5.72:1 |
Values
| HEX | #306A9C |
| RGB | rgb(48, 106, 156) |
| HSL | hsl(208, 53%, 40%) |
| OKLCH | oklch(50.9% 0.1 247.3) |
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 #306A9C | 5.72:1 | AA | Lc -83.7 | Fine for body text |
| Black text on #306A9C | 3.66:1 | AA large text | Lc 25.7 | Dividers and decoration only |
| #306A9C text on white | 5.72:1 | AA | Lc 78.4 | Fine for body text |
| #306A9C text on black | 3.66:1 | AA large text | Lc -23.4 | 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
#CCDBEA
oklch(88.5% 0.026 248.1)
-
Step 300
300
#A8C4DF
oklch(80.8% 0.049 247.5)
-
Step 400
400
#79A5CF
oklch(70.6% 0.078 247.8)
-
Step 500
500
#558FC2
oklch(63.2% 0.098 246.6)
-
Step 600
600
#3878AF
oklch(55.6% 0.108 247.2)
-
Step 700
700 (this color)
#306A9C
oklch(50.9% 0.1 247.3)
-
Step 800
800
#24527A
oklch(42.6% 0.084 247.5)
-
Step 900
900
#234462
oklch(37.6% 0.065 247.8)
-
Step 950
950
#152839
oklch(26.9% 0.04 246.9)
#306A9C 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) | #546C9E | 0.040 |
| Deuteranopia (no green cones) | #45629B | 0.028 |
| Tritanopia (no blue cones) | #00767C | 0.075 |
| Achromatopsia (no color) | #666666 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #306A9C
#306A9C
oklch(50.9% 0.1 247.3)
- #8B591A
#8B591A
oklch(50.8% 0.1 67.4)
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 #306A9C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muted Blue #3B719F ΔE 0.024
- Ocean Blue #03719C ΔE 0.026
- Peacock Blue #016795 ΔE 0.029
- Denim #3B638C ΔE 0.029
- Flat Blue #3C73A8 ΔE 0.033
- French Blue #436BAD ΔE 0.034
- Dusky Blue #475F94 ΔE 0.036
- Mid Blue #276AB3 ΔE 0.037
Use #306A9C 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.