#306A78
Closest named color: Dark Aqua (#05696B). oklch(49.2% 0.064 215.9), rgb(48, 106, 120).
Aa
White text reads best on this color (6.07:1).
About this color
#306A78 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 49%, its chroma 0.064 and its hue 216°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aqua (#05696B), ΔE 0.033 away. White text reads best on it, at 6.07:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (49%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Dark Aqua (#05696B) |
| Black text | 3.45:1 |
| White text | 6.07:1 |
Values
| HEX | #306A78 |
| RGB | rgb(48, 106, 120) |
| HSL | hsl(192, 43%, 33%) |
| OKLCH | oklch(49.2% 0.064 215.9) |
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 #306A78 | 6.07:1 | AA | Lc -85.3 | Fine for body text |
| Black text on #306A78 | 3.45:1 | AA large text | Lc 23.9 | Dividers and decoration only |
| #306A78 text on white | 6.07:1 | AA | Lc 80.2 | Fine for body text |
| #306A78 text on black | 3.45:1 | AA large text | Lc -21.7 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E4EBEE
oklch(93.6% 0.009 225.1)
-
Step 200
200
#CDDCE0
oklch(88.4% 0.017 215.5)
-
Step 300
300
#ABC6CD
oklch(80.9% 0.031 215.1)
-
Step 400
400
#7DA9B4
oklch(70.7% 0.05 214.9)
-
Step 500
500
#5B93A2
oklch(63% 0.063 216.7)
-
Step 600
600
#3E7E8D
oklch(55.7% 0.069 215.1)
-
Step 700
700 (this color)
#306A78
oklch(49.2% 0.064 215.9)
-
Step 800
800
#295661
oklch(42.6% 0.053 215.8)
-
Step 900
900
#264750
oklch(37.7% 0.042 217.4)
-
Step 950
950
#172A2F
oklch(27.1% 0.026 216.3)
#306A78 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) | #606779 | 0.057 |
| Deuteranopia (no green cones) | #565F78 | 0.052 |
| Tritanopia (no blue cones) | #006F6E | 0.034 |
| Achromatopsia (no color) | #626262 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #306A78
#306A78
oklch(49.2% 0.064 215.9)
- #815447
#815447
oklch(49.2% 0.064 36.8)
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 #306A78, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aqua #05696B ΔE 0.033
- Deep Turquoise #017374 ΔE 0.036
- Slate #516572 ΔE 0.036
- Dark Aquamarine #017371 ΔE 0.039
- Deep Aqua #08787F ΔE 0.042
- Denim #3B638C ΔE 0.046
- Sea Blue #047495 ΔE 0.048
- Petrol #005F6A ΔE 0.050
Use #306A78 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.