#306D6A
Closest named color: Dark Aquamarine (#017371). oklch(49.4% 0.063 191), rgb(48, 109, 106).
Aa
White text reads best on this color (5.96:1).
About this color
#306D6A is a medium-dark, muted teal or cyan. In OKLCH its lightness is 49%, its chroma 0.063 and its hue 191°. 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 5.96:1.
| 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 | 5.96:1 |
Values
| HEX | #306D6A |
| RGB | rgb(48, 109, 106) |
| HSL | hsl(177, 39%, 31%) |
| OKLCH | oklch(49.4% 0.063 191) |
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 #306D6A | 5.96:1 | AA | Lc -84.9 | Fine for body text |
| Black text on #306D6A | 3.52:1 | AA large text | Lc 24.4 | Dividers and decoration only |
| #306D6A text on white | 5.96:1 | AA | Lc 79.6 | Fine for body text |
| #306D6A 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
#ABC7C5
oklch(80.8% 0.03 191.3)
-
Step 400
400
#7DABA8
oklch(70.7% 0.049 191.1)
-
Step 500
500
#5A9692
oklch(63.1% 0.063 190.2)
-
Step 600
600
#3E807D
oklch(55.6% 0.068 191.5)
-
Step 700
700 (this color)
#306D6A
oklch(49.4% 0.063 191)
-
Step 800
800
#285856
oklch(42.6% 0.052 191.8)
-
Step 900
900
#264947
oklch(37.8% 0.041 190.8)
-
Step 950
950
#172B29
oklch(27.1% 0.026 187.7)
#306D6A 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) | #67686A | 0.066 |
| Deuteranopia (no green cones) | #5D606B | 0.063 |
| Tritanopia (no blue cones) | #00706C | 0.022 |
| Achromatopsia (no color) | #636363 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #306D6A
#306D6A
oklch(49.4% 0.063 191)
- #815259
#815259
oklch(49.3% 0.064 9.9)
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 #306D6A, 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 0.040
- Bluegreen #017A79 ΔE 0.041
- Dark Green Blue #1F6357 ΔE 0.043
- Slate #516572 ΔE 0.047
- Petrol #005F6A ΔE 0.056
Use #306D6A 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.