#356C78
Closest named color: Deep Turquoise (#017374). oklch(49.9% 0.061 213.8), rgb(53, 108, 120).
Aa
White text reads best on this color (5.88:1).
About this color
#356C78 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 50%, its chroma 0.061 and its hue 214°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Turquoise (#017374), ΔE 0.034 away. White text reads best on it, at 5.88:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (50%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Deep Turquoise (#017374) |
| Black text | 3.56:1 |
| White text | 5.88:1 |
Values
| HEX | #356C78 |
| RGB | rgb(53, 108, 120) |
| HSL | hsl(191, 39%, 34%) |
| OKLCH | oklch(49.9% 0.061 213.8) |
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 #356C78 | 5.88:1 | AA | Lc -84.5 | Fine for body text |
| Black text on #356C78 | 3.56:1 | AA large text | Lc 24.8 | Dividers and decoration only |
| #356C78 text on white | 5.88:1 | AA | Lc 79.3 | Fine for body text |
| #356C78 text on black | 3.56:1 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E4EBED
oklch(93.5% 0.008 216.6)
-
Step 200
200
#CEDCE0
oklch(88.5% 0.016 216.7)
-
Step 300
300
#ACC6CC
oklch(80.9% 0.029 213.2)
-
Step 400
400
#7FA9B3
oklch(70.8% 0.048 214)
-
Step 500
500
#5D93A0
oklch(63% 0.06 214.7)
-
Step 600
600
#417D8B
oklch(55.5% 0.066 214.8)
-
Step 700
700 (this color)
#356C78
oklch(49.9% 0.061 213.8)
-
Step 800
800
#2B5660
oklch(42.7% 0.05 214.7)
-
Step 900
900
#27474E
oklch(37.6% 0.04 213.3)
-
Step 950
950
#182A2E
oklch(27.1% 0.025 213.2)
#356C78 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) | #636979 | 0.056 |
| Deuteranopia (no green cones) | #596178 | 0.051 |
| Tritanopia (no blue cones) | #007170 | 0.035 |
| Achromatopsia (no color) | #646464 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #356C78
#356C78
oklch(49.9% 0.061 213.8)
- #82564C
#82564C
oklch(49.9% 0.061 33.4)
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 #356C78, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Turquoise #017374 ΔE 0.034
- Slate #516572 ΔE 0.034
- Dark Aquamarine #017371 ΔE 0.037
- Dark Aqua #05696B ΔE 0.038
- Deep Aqua #08787F ΔE 0.038
- Bluegreen #017A79 ΔE 0.046
- Sea Blue #047495 ΔE 0.048
- Denim #3B638C ΔE 0.049
Use #356C78 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.