#356F81
Closest named color: Deep Aqua (#08787F). oklch(51% 0.067 220.8), rgb(53, 111, 129).
Aa
White text reads best on this color (5.61:1).
About this color
#356F81 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 51%, its chroma 0.067 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Aqua (#08787F), ΔE 0.034 away. White text reads best on it, at 5.61:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (51%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Deep Aqua (#08787F) |
| Black text | 3.74:1 |
| White text | 5.61:1 |
Values
| HEX | #356F81 |
| RGB | rgb(53, 111, 129) |
| HSL | hsl(194, 42%, 36%) |
| OKLCH | oklch(51% 0.067 220.8) |
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 #356F81 | 5.61:1 | AA | Lc -83.2 | Fine for body text |
| Black text on #356F81 | 3.74:1 | AA large text | Lc 26.2 | Dividers and decoration only |
| #356F81 text on white | 5.61:1 | AA | Lc 77.9 | Fine for body text |
| #356F81 text on black | 3.74:1 | AA large text | Lc -23.9 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3EBEE
oklch(93.5% 0.009 222.1)
-
Step 200
200
#CDDCE1
oklch(88.5% 0.018 219.7)
-
Step 300
300
#ABC6CF
oklch(80.9% 0.032 219.9)
-
Step 400
400
#7DA9B7
oklch(70.8% 0.051 219.5)
-
Step 500
500
#5A93A6
oklch(63.1% 0.066 221.3)
-
Step 600
600
#3E7D91
oklch(55.6% 0.072 221.2)
-
Step 700
700 (this color)
#356F81
oklch(51% 0.067 220.8)
-
Step 800
800
#285664
oklch(42.7% 0.055 220.3)
-
Step 900
900
#264752
oklch(37.8% 0.043 221.6)
-
Step 950
950
#172A30
oklch(27.1% 0.027 220)
#356F81 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) | #646C82 | 0.055 |
| Deuteranopia (no green cones) | #596481 | 0.050 |
| Tritanopia (no blue cones) | #007575 | 0.040 |
| Achromatopsia (no color) | #686868 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #356F81
#356F81
oklch(51% 0.067 220.8)
- #875948
#875948
oklch(51% 0.067 41.1)
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 #356F81, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Aqua #08787F ΔE 0.034
- Sea Blue #047495 ΔE 0.035
- Metallic Blue #4F738E ΔE 0.038
- Deep Turquoise #017374 ΔE 0.038
- Slate #516572 ΔE 0.040
- Ocean #017B92 ΔE 0.040
- Dark Aquamarine #017371 ΔE 0.042
- Bluegreen #017A79 ΔE 0.045
Use #356F81 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.