#355B5A
Closest named color: Dark Green Blue (#1F6357). oklch(44.3% 0.043 193.5), rgb(53, 91, 90).
Aa
White text reads best on this color (7.51:1).
About this color
#355B5A is a dark, muted teal or cyan. In OKLCH its lightness is 44%, its chroma 0.043 and its hue 194°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.032 away. White text reads best on it, at 7.51:1.
| Hue family | Teals and cyans |
| Lightness | dark (44%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.79:1 |
| White text | 7.51:1 |
Values
| HEX | #355B5A |
| RGB | rgb(53, 91, 90) |
| HSL | hsl(178, 26%, 28%) |
| OKLCH | oklch(44.3% 0.043 193.5) |
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 #355B5A | 7.51:1 | AAA | Lc -90.8 | Preferred for body text |
| Black text on #355B5A | 2.79:1 | Fails | Lc 18.0 | Dividers and decoration only |
| #355B5A text on white | 7.51:1 | AAA | Lc 86.0 | Fine for body text |
| #355B5A text on black | 2.79:1 | Fails | Lc -16.0 | 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 800.
-
Step 50
50
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E5EBEB
oklch(93.6% 0.006 197)
-
Step 200
200
#CFDCDC
oklch(88.5% 0.014 196.9)
-
Step 300
300
#AFC6C5
oklch(80.9% 0.025 193.5)
-
Step 400
400
#84A9A8
oklch(70.7% 0.04 194.2)
-
Step 500
500
#649492
oklch(63.2% 0.052 192.6)
-
Step 600
600
#497E7D
oklch(55.6% 0.057 194.1)
-
Step 700
700
#3A6A69
oklch(49% 0.052 193.8)
-
Step 800
800 (this color)
#355B5A
oklch(44.3% 0.043 193.5)
-
Step 900
900
#2B4747
oklch(37.6% 0.034 195.8)
-
Step 950
950
#1A2A29
oklch(27% 0.022 191)
#355B5A 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) | #57585A | 0.046 |
| Deuteranopia (no green cones) | #50525A | 0.044 |
| Tritanopia (no blue cones) | #255D5B | 0.015 |
| Achromatopsia (no color) | #555555 | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #355B5A
#355B5A
oklch(44.3% 0.043 193.5)
- #69494C
#69494C
oklch(44.1% 0.044 12.8)
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 #355B5A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.032
- Petrol #005F6A ΔE 0.036
- Dark Slate Gray #2F4F4F ΔE 0.040
- Deep Teal #00555A ΔE 0.043
- Dark Aqua #05696B ΔE 0.047
- YInMn Blue #415A77 ΔE 0.053
- Dark Blue Green #005249 ΔE 0.057
- Slate #516572 ΔE 0.060
Use #355B5A 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.