#306E68
Closest named color: Dark Aquamarine (#017371). oklch(49.6% 0.065 186.8), rgb(48, 110, 104).
Aa
White text reads best on this color (5.90:1).
About this color
#306E68 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 50%, its chroma 0.065 and its hue 187°. 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 5.90:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (50%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Dark Aquamarine (#017371) |
| Black text | 3.55:1 |
| White text | 5.90:1 |
Values
| HEX | #306E68 |
| RGB | rgb(48, 110, 104) |
| HSL | hsl(174, 39%, 31%) |
| OKLCH | oklch(49.6% 0.065 186.8) |
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 #306E68 | 5.90:1 | AA | Lc -84.6 | Fine for body text |
| Black text on #306E68 | 3.55:1 | AA large text | Lc 24.7 | Dividers and decoration only |
| #306E68 text on white | 5.90:1 | AA | Lc 79.4 | Fine for body text |
| #306E68 text on black | 3.55:1 | AA large text | Lc -22.5 | 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
#CDDDDB
oklch(88.5% 0.017 187.8)
-
Step 300
300
#ABC8C4
oklch(81% 0.032 186.4)
-
Step 400
400
#7DABA6
oklch(70.7% 0.05 187.7)
-
Step 500
500
#5A9690
oklch(63% 0.063 187.6)
-
Step 600
600
#3D817A
oklch(55.7% 0.07 186.5)
-
Step 700
700 (this color)
#306E68
oklch(49.6% 0.065 186.8)
-
Step 800
800
#285954
oklch(42.8% 0.054 186.6)
-
Step 900
900
#254945
oklch(37.7% 0.042 186.3)
-
Step 950
950
#172B28
oklch(27.1% 0.027 183.8)
#306E68 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) | #696868 | 0.070 |
| Deuteranopia (no green cones) | #5F6169 | 0.065 |
| Tritanopia (no blue cones) | #01706C | 0.021 |
| Achromatopsia (no color) | #646464 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #306E68
#306E68
oklch(49.6% 0.065 186.8)
- #82525C
#82525C
oklch(49.5% 0.065 6.2)
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 #306E68, 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 0.030
- Bluegreen #017A79 ΔE 0.039
- Deep Aqua #08787F ΔE 0.040
- Dark Green Blue #1F6357 ΔE 0.043
- Slate #516572 ΔE 0.050
- Teal #008080 ΔE 0.056
Use #306E68 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.