#355665
Closest named color: YInMn Blue (#415A77). oklch(43.4% 0.046 228.5), rgb(53, 86, 101).
Aa
White text reads best on this color (7.86:1).
About this color
#355665 is a dark, muted teal or cyan. In OKLCH its lightness is 43%, its chroma 0.046 and its hue 229°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.035 away. White text reads best on it, at 7.86:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.67:1 |
| White text | 7.86:1 |
Values
| HEX | #355665 |
| RGB | rgb(53, 86, 101) |
| HSL | hsl(199, 31%, 30%) |
| OKLCH | oklch(43.4% 0.046 228.5) |
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 #355665 | 7.86:1 | AAA | Lc -91.9 | Preferred for body text |
| Black text on #355665 | 2.67:1 | Fails | Lc 16.8 | Dividers and decoration only |
| #355665 text on white | 7.86:1 | AAA | Lc 87.2 | Fine for body text |
| #355665 text on black | 2.67:1 | Fails | Lc -14.9 | Not readable |
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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E5EBEE
oklch(93.6% 0.008 228.9)
-
Step 200
200
#D0DBE1
oklch(88.5% 0.015 231.2)
-
Step 300
300
#B0C4CE
oklch(80.8% 0.026 229.2)
-
Step 400
400
#85A6B6
oklch(70.6% 0.043 229)
-
Step 500
500
#6690A4
oklch(63% 0.055 229.1)
-
Step 600
600
#4D7A8F
oklch(55.5% 0.059 229.2)
-
Step 700
700
#3D677A
oklch(49.1% 0.056 228.7)
-
Step 800
800 (this color)
#355665
oklch(43.4% 0.046 228.5)
-
Step 900
900
#2D4551
oklch(37.6% 0.036 230.6)
-
Step 950
950
#1B292F
oklch(27.1% 0.022 226.4)
#355665 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) | #4E5566 | 0.033 |
| Deuteranopia (no green cones) | #474F65 | 0.030 |
| Tritanopia (no blue cones) | #205A5B | 0.032 |
| Achromatopsia (no color) | #525252 | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #355665
#355665
oklch(43.4% 0.046 228.5)
- #66493B
#66493B
oklch(43.3% 0.046 46.8)
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 #355665, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.035
- Petrol #005F6A ΔE 0.038
- Dark Slate Gray #2F4F4F ΔE 0.040
- Deep Teal #00555A ΔE 0.043
- Dusty Grape #545775 ΔE 0.052
- Dark Grey Blue #29465B ΔE 0.054
- Light Navy Blue #2E5A88 ΔE 0.057
- Dark Green Blue #1F6357 ΔE 0.057
Use #355665 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.