#355A64
Closest named color: Petrol (#005F6A). oklch(44.4% 0.045 216.9), rgb(53, 90, 100).
Aa
White text reads best on this color (7.50:1).
About this color
#355A64 is a dark, muted teal or cyan. In OKLCH its lightness is 44%, its chroma 0.045 and its hue 217°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.032 away. White text reads best on it, at 7.50:1.
| Hue family | Teals and cyans |
| Lightness | dark (44%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.79:1 |
| White text | 7.50:1 |
Values
| HEX | #355A64 |
| RGB | rgb(53, 90, 100) |
| HSL | hsl(193, 31%, 30%) |
| OKLCH | oklch(44.4% 0.045 216.9) |
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 #355A64 | 7.50:1 | AAA | Lc -90.8 | Preferred for body text |
| Black text on #355A64 | 2.79:1 | Fails | Lc 18.0 | Dividers and decoration only |
| #355A64 text on white | 7.50:1 | AAA | Lc 86.0 | Fine for body text |
| #355A64 text on black | 2.79:1 | Fails | Lc -16.1 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E4EBED
oklch(93.5% 0.008 216.6)
-
Step 200
200
#CFDCDF
oklch(88.6% 0.015 213.1)
-
Step 300
300
#AEC5CC
oklch(80.8% 0.027 218)
-
Step 400
400
#83A8B2
oklch(70.8% 0.043 216.1)
-
Step 500
500
#63929F
oklch(63.1% 0.054 217)
-
Step 600
600
#497C8A
oklch(55.6% 0.059 217.3)
-
Step 700
700
#3A6975
oklch(49.2% 0.055 216.1)
-
Step 800
800 (this color)
#355A64
oklch(44.4% 0.045 216.9)
-
Step 900
900
#2B464E
oklch(37.6% 0.035 218.5)
-
Step 950
950
#1A292E
oklch(27% 0.022 220.6)
#355A64 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) | #535865 | 0.040 |
| Deuteranopia (no green cones) | #4C5264 | 0.037 |
| Tritanopia (no blue cones) | #1F5E5D | 0.028 |
| Achromatopsia (no color) | #555555 | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #355A64
#355A64
oklch(44.4% 0.045 216.9)
- #6A4B42
#6A4B42
oklch(44.4% 0.045 36.8)
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 #355A64, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.032
- YInMn Blue #415A77 ΔE 0.037
- Dark Slate Gray #2F4F4F ΔE 0.044
- Deep Teal #00555A ΔE 0.045
- Dark Green Blue #1F6357 ΔE 0.045
- Dark Aqua #05696B ΔE 0.049
- Dusty Grape #545775 ΔE 0.054
- Slate #516572 ΔE 0.055
Use #355A64 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.