#356B74
Closest named color: Deep Turquoise (#017374). oklch(49.5% 0.059 209.6), rgb(53, 107, 116).
Aa
White text reads best on this color (5.98:1).
About this color
#356B74 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 49%, its chroma 0.059 and its hue 210°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Turquoise (#017374), ΔE 0.033 away. White text reads best on it, at 5.98:1.
| 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 | 5.98:1 |
Values
| HEX | #356B74 |
| RGB | rgb(53, 107, 116) |
| HSL | hsl(189, 37%, 33%) |
| OKLCH | oklch(49.5% 0.059 209.6) |
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 #356B74 | 5.98:1 | AA | Lc -85.0 | Fine for body text |
| Black text on #356B74 | 3.50:1 | AA large text | Lc 24.3 | Dividers and decoration only |
| #356B74 text on white | 5.98:1 | AA | Lc 79.8 | Fine for body text |
| #356B74 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
#CEDCDF
oklch(88.5% 0.016 212)
-
Step 300
300
#ACC6CB
oklch(80.9% 0.029 210.5)
-
Step 400
400
#80A9B0
oklch(70.7% 0.045 209.1)
-
Step 500
500
#5E939D
oklch(63% 0.058 210.8)
-
Step 600
600
#437E88
oklch(55.7% 0.063 209.7)
-
Step 700
700 (this color)
#356B74
oklch(49.5% 0.059 209.6)
-
Step 800
800
#2C565E
oklch(42.6% 0.049 211.4)
-
Step 900
900
#28474D
oklch(37.6% 0.038 211.3)
-
Step 950
950
#182A2D
oklch(27.1% 0.024 209.1)
#356B74 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) | #636775 | 0.057 |
| Deuteranopia (no green cones) | #596074 | 0.052 |
| Tritanopia (no blue cones) | #076F6E | 0.031 |
| Achromatopsia (no color) | #636363 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #356B74
#356B74
oklch(49.5% 0.059 209.6)
- #80554E
#80554E
oklch(49.5% 0.059 29.5)
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 #356B74, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Turquoise #017374 ΔE 0.033
- Dark Aqua #05696B ΔE 0.033
- Slate #516572 ΔE 0.034
- Dark Aquamarine #017371 ΔE 0.035
- Deep Aqua #08787F ΔE 0.041
- Bluegreen #017A79 ΔE 0.047
- Denim #3B638C ΔE 0.053
- Sea Blue #047495 ΔE 0.053
Use #356B74 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.