#306D70
Closest named color: Deep Turquoise (#017374). oklch(49.6% 0.063 199.7), rgb(48, 109, 112).
Aa
White text reads best on this color (5.92:1).
About this color
#306D70 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 50%, its chroma 0.063 and its hue 200°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Turquoise (#017374), ΔE 0.024 away. White text reads best on it, at 5.92:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (50%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Deep Turquoise (#017374) |
| Black text | 3.54:1 |
| White text | 5.92:1 |
Values
| HEX | #306D70 |
| RGB | rgb(48, 109, 112) |
| HSL | hsl(183, 40%, 31%) |
| OKLCH | oklch(49.6% 0.063 199.7) |
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 #306D70 | 5.92:1 | AA | Lc -84.6 | Fine for body text |
| Black text on #306D70 | 3.54:1 | AA large text | Lc 24.6 | Dividers and decoration only |
| #306D70 text on white | 5.92:1 | AA | Lc 79.4 | Fine for body text |
| #306D70 text on black | 3.54:1 | AA large text | Lc -22.4 | 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
#E3ECEC
oklch(93.6% 0.01 197)
-
Step 200
200
#CDDDDD
oklch(88.6% 0.017 196.8)
-
Step 300
300
#ABC7C8
oklch(80.9% 0.03 199.2)
-
Step 400
400
#7DAAAC
oklch(70.6% 0.048 199.6)
-
Step 500
500
#5A9598
oklch(63.1% 0.062 199.9)
-
Step 600
600
#3D7F83
oklch(55.5% 0.067 200.7)
-
Step 700
700 (this color)
#306D70
oklch(49.6% 0.063 199.7)
-
Step 800
800
#28585A
oklch(42.8% 0.052 199)
-
Step 900
900
#25484A
oklch(37.6% 0.041 200.4)
-
Step 950
950
#172A2B
oklch(26.9% 0.025 200)
#306D70 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) | #666870 | 0.065 |
| Deuteranopia (no green cones) | #5B6170 | 0.059 |
| Tritanopia (no blue cones) | #00716E | 0.025 |
| Achromatopsia (no color) | #646464 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #306D70
#306D70
oklch(49.6% 0.063 199.7)
- #825453
#825453
oklch(49.7% 0.062 20.9)
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 #306D70, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Turquoise #017374 ΔE 0.024
- Dark Aquamarine #017371 ΔE 0.026
- Dark Aqua #05696B ΔE 0.029
- Deep Aqua #08787F ΔE 0.036
- Bluegreen #017A79 ΔE 0.040
- Slate #516572 ΔE 0.042
- Dark Green Blue #1F6357 ΔE 0.049
- Petrol #005F6A ΔE 0.055
Use #306D70 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.