#306D5D
Closest named color: Dark Aquamarine (#017371). oklch(48.9% 0.069 173.7), rgb(48, 109, 93).
Aa
White text reads best on this color (6.04:1).
About this color
#306D5D is a medium-dark, muted teal or cyan. In OKLCH its lightness is 49%, its chroma 0.069 and its hue 174°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aquamarine (#017371), ΔE 0.033 away. White text reads best on it, at 6.04:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (49%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Dark Aquamarine (#017371) |
| Black text | 3.47:1 |
| White text | 6.04:1 |
Values
| HEX | #306D5D |
| RGB | rgb(48, 109, 93) |
| HSL | hsl(164, 39%, 31%) |
| OKLCH | oklch(48.9% 0.069 173.7) |
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 #306D5D | 6.04:1 | AA | Lc -85.2 | Fine for body text |
| Black text on #306D5D | 3.47:1 | AA large text | Lc 24.0 | Dividers and decoration only |
| #306D5D text on white | 6.04:1 | AA | Lc 80.0 | Fine for body text |
| #306D5D text on black | 3.47:1 | AA large text | Lc -21.8 | 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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E4ECE9
oklch(93.6% 0.009 171.8)
-
Step 200
200
#CDDDD8
oklch(88.4% 0.018 175.3)
-
Step 300
300
#ACC8BF
oklch(80.9% 0.033 174.1)
-
Step 400
400
#7EAC9E
oklch(70.7% 0.053 173.9)
-
Step 500
500
#5B9786
oklch(63% 0.068 174)
-
Step 600
600
#3F8270
oklch(55.7% 0.075 173.7)
-
Step 700
700 (this color)
#306D5D
oklch(48.9% 0.069 173.7)
-
Step 800
800
#29594C
oklch(42.6% 0.057 173.5)
-
Step 900
900
#264940
oklch(37.6% 0.044 175.3)
-
Step 950
950
#172B25
oklch(27% 0.028 173)
#306D5D 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) | #6A675C | 0.072 |
| Deuteranopia (no green cones) | #60605E | 0.068 |
| Tritanopia (no blue cones) | #116E68 | 0.022 |
| Achromatopsia (no color) | #636363 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #306D5D
#306D5D
oklch(48.9% 0.069 173.7)
- #7F5063
#7F5063
oklch(49% 0.068 354.1)
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 #306D5D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aquamarine #017371 ΔE 0.033
- Dark Aqua #05696B ΔE 0.036
- Dark Green Blue #1F6357 ΔE 0.036
- Deep Turquoise #017374 ΔE 0.037
- Bluegreen #017A79 ΔE 0.049
- Deep Aqua #08787F ΔE 0.053
- Slate #516572 ΔE 0.062
- Petrol #005F6A ΔE 0.063
Use #306D5D 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.