#355A6B
Closest named color: YInMn Blue (#415A77). oklch(44.7% 0.051 229.1), rgb(53, 90, 107).
Aa
White text reads best on this color (7.43:1).
About this color
#355A6B is a dark, muted teal or cyan. In OKLCH its lightness is 45%, its chroma 0.051 and its hue 229°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.026 away. White text reads best on it, at 7.43:1.
| Hue family | Teals and cyans |
| Lightness | dark (45%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.82:1 |
| White text | 7.43:1 |
Values
| HEX | #355A6B |
| RGB | rgb(53, 90, 107) |
| HSL | hsl(199, 34%, 31%) |
| OKLCH | oklch(44.7% 0.051 229.1) |
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 #355A6B | 7.43:1 | AAA | Lc -90.6 | Preferred for body text |
| Black text on #355A6B | 2.82:1 | Fails | Lc 18.3 | Dividers and decoration only |
| #355A6B text on white | 7.43:1 | AAA | Lc 85.7 | Fine for body text |
| #355A6B text on black | 2.82:1 | Fails | Lc -16.3 | 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 800.
-
Step 50
50
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBEE
oklch(93.6% 0.009 225.1)
-
Step 200
200
#CFDBE2
oklch(88.4% 0.016 233)
-
Step 300
300
#AEC5D0
oklch(81% 0.029 228.2)
-
Step 400
400
#82A7B8
oklch(70.7% 0.047 227.7)
-
Step 500
500
#6291A7
oklch(63.1% 0.061 228.9)
-
Step 600
600
#487B92
oklch(55.6% 0.065 228.8)
-
Step 700
700
#39677D
oklch(49% 0.062 230.5)
-
Step 800
800 (this color)
#355A6B
oklch(44.7% 0.051 229.1)
-
Step 900
900
#2B4652
oklch(37.8% 0.039 227.9)
-
Step 950
950
#192930
oklch(27% 0.025 227.2)
#355A6B 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) | #51596C | 0.036 |
| Deuteranopia (no green cones) | #4A536B | 0.033 |
| Tritanopia (no blue cones) | #1A5F5F | 0.037 |
| Achromatopsia (no color) | #555555 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #355A6B
#355A6B
oklch(44.7% 0.051 229.1)
- #6C4C3B
#6C4C3B
oklch(44.7% 0.051 49)
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 #355A6B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.026
- Petrol #005F6A ΔE 0.034
- Dusty Grape #545775 ΔE 0.047
- Light Navy Blue #2E5A88 ΔE 0.049
- Deep Teal #00555A ΔE 0.051
- Dark Aqua #05696B ΔE 0.052
- Slate #516572 ΔE 0.052
- Dark Slate Gray #2F4F4F ΔE 0.052
Use #355A6B 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.