#356B73
Closest named color: Deep Turquoise (#017374). oklch(49.4% 0.059 208.1), rgb(53, 107, 115).
Aa
White text reads best on this color (5.99:1).
About this color
#356B73 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 49%, its chroma 0.059 and its hue 208°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Turquoise (#017374), ΔE 0.032 away. White text reads best on it, at 5.99:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (49%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Deep Turquoise (#017374) |
| Black text | 3.50:1 |
| White text | 5.99:1 |
Values
| HEX | #356B73 |
| RGB | rgb(53, 107, 115) |
| HSL | hsl(188, 37%, 33%) |
| OKLCH | oklch(49.4% 0.059 208.1) |
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 #356B73 | 5.99:1 | AA | Lc -85.0 | Fine for body text |
| Black text on #356B73 | 3.50:1 | AA large text | Lc 24.2 | Dividers and decoration only |
| #356B73 text on white | 5.99:1 | AA | Lc 79.8 | Fine for body text |
| #356B73 text on black | 3.50:1 | AA large text | Lc -22.0 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E4EBED
oklch(93.5% 0.008 216.6)
-
Step 200
200
#CEDCDE
oklch(88.4% 0.015 207.1)
-
Step 300
300
#ACC6CA
oklch(80.8% 0.029 207.8)
-
Step 400
400
#80A9AF
oklch(70.7% 0.045 207.3)
-
Step 500
500
#5E949C
oklch(63.2% 0.058 207.7)
-
Step 600
600
#437E87
oklch(55.7% 0.063 208.3)
-
Step 700
700 (this color)
#356B73
oklch(49.4% 0.059 208.1)
-
Step 800
800
#2C575D
oklch(42.8% 0.049 207.3)
-
Step 900
900
#28474C
oklch(37.6% 0.038 208.8)
-
Step 950
950
#182A2D
oklch(27.1% 0.024 209.1)
#356B73 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) | #636774 | 0.057 |
| Deuteranopia (no green cones) | #596073 | 0.052 |
| Tritanopia (no blue cones) | #096F6D | 0.030 |
| Achromatopsia (no color) | #636363 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #356B73
#356B73
oklch(49.4% 0.059 208.1)
- #80554F
#80554F
oklch(49.5% 0.059 28.1)
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 #356B73, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Turquoise #017374 ΔE 0.032
- Dark Aqua #05696B ΔE 0.032
- Slate #516572 ΔE 0.034
- Dark Aquamarine #017371 ΔE 0.034
- Deep Aqua #08787F ΔE 0.041
- Bluegreen #017A79 ΔE 0.047
- Dark Green Blue #1F6357 ΔE 0.053
- Petrol #005F6A ΔE 0.053
Use #356B73 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.