#306D6C
Closest named color: Dark Aquamarine (#017371). oklch(49.5% 0.063 193.9), rgb(48, 109, 108).
Aa
White text reads best on this color (5.94:1).
About this color
#306D6C is a medium-dark, muted teal or cyan. In OKLCH its lightness is 49%, its chroma 0.063 and its hue 194°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aquamarine (#017371), ΔE 0.024 away. White text reads best on it, at 5.94:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (49%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Dark Aquamarine (#017371) |
| Black text | 3.52:1 |
| White text | 5.94:1 |
Values
| HEX | #306D6C |
| RGB | rgb(48, 109, 108) |
| HSL | hsl(179, 39%, 31%) |
| OKLCH | oklch(49.5% 0.063 193.9) |
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 #306D6C | 5.94:1 | AA | Lc -84.8 | Fine for body text |
| Black text on #306D6C | 3.52:1 | AA large text | Lc 24.5 | Dividers and decoration only |
| #306D6C text on white | 5.94:1 | AA | Lc 79.6 | Fine for body text |
| #306D6C text on black | 3.52:1 | AA large text | Lc -22.2 | 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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E4ECEB
oklch(93.7% 0.009 188.1)
-
Step 200
200
#CDDDDC
oklch(88.5% 0.017 192.3)
-
Step 300
300
#ABC7C6
oklch(80.9% 0.03 193.9)
-
Step 400
400
#7DABA9
oklch(70.8% 0.049 192.7)
-
Step 500
500
#5A9694
oklch(63.2% 0.063 193)
-
Step 600
600
#3D807F
oklch(55.6% 0.068 194.1)
-
Step 700
700 (this color)
#306D6C
oklch(49.5% 0.063 193.9)
-
Step 800
800
#285857
oklch(42.7% 0.052 193.6)
-
Step 900
900
#264848
oklch(37.6% 0.04 195.6)
-
Step 950
950
#172A2A
oklch(26.9% 0.025 195.8)
#306D6C 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) | #67686C | 0.066 |
| Deuteranopia (no green cones) | #5D606D | 0.063 |
| Tritanopia (no blue cones) | #00706D | 0.022 |
| Achromatopsia (no color) | #646464 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #306D6C
#306D6C
oklch(49.5% 0.063 193.9)
- #815357
#815357
oklch(49.4% 0.062 13.9)
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 #306D6C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aquamarine #017371 ΔE 0.024
- Deep Turquoise #017374 ΔE 0.025
- Dark Aqua #05696B ΔE 0.027
- Deep Aqua #08787F ΔE 0.038
- Bluegreen #017A79 ΔE 0.040
- Dark Green Blue #1F6357 ΔE 0.045
- Slate #516572 ΔE 0.045
- Petrol #005F6A ΔE 0.055
Use #306D6C 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.