#3B565A
Closest named color: Dark Slate Gray (#2F4F4F). oklch(43.3% 0.033 207.5), rgb(59, 86, 90).
Aa
White text reads best on this color (7.88:1).
About this color
#3B565A is a dark, muted teal or cyan. In OKLCH its lightness is 43%, its chroma 0.033 and its hue 208°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.031 away. White text reads best on it, at 7.88:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | muted (0.033) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.66:1 |
| White text | 7.88:1 |
Values
| HEX | #3B565A |
| RGB | rgb(59, 86, 90) |
| HSL | hsl(188, 21%, 29%) |
| OKLCH | oklch(43.3% 0.033 207.5) |
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 #3B565A | 7.88:1 | AAA | Lc -92.0 | Preferred for body text |
| Black text on #3B565A | 2.66:1 | Fails | Lc 16.7 | Dividers and decoration only |
| #3B565A text on white | 7.88:1 | AAA | Lc 87.3 | Fine for body text |
| #3B565A text on black | 2.66:1 | Fails | Lc -14.8 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E6EBEC
oklch(93.7% 0.006 211)
-
Step 200
200
#D1DBDD
oklch(88.4% 0.011 211)
-
Step 300
300
#B3C4C7
oklch(80.8% 0.019 209.4)
-
Step 400
400
#8BA6AA
oklch(70.6% 0.031 207.4)
-
Step 500
500
#6E9196
oklch(63.2% 0.04 207.1)
-
Step 600
600
#557B80
oklch(55.6% 0.043 206.3)
-
Step 700
700
#45676C
oklch(49% 0.04 207.5)
-
Step 800
800 (this color)
#3B565A
oklch(43.3% 0.033 207.5)
-
Step 900
900
#324649
oklch(37.9% 0.026 207.6)
-
Step 950
950
#1D292B
oklch(27.1% 0.017 208.8)
#3B565A 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) | #52545A | 0.033 |
| Deuteranopia (no green cones) | #4C505A | 0.029 |
| Tritanopia (no blue cones) | #305857 | 0.016 |
| Achromatopsia (no color) | #515151 | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B565A
#3B565A
oklch(43.3% 0.033 207.5)
- #624A47
#624A47
oklch(43.4% 0.033 26.7)
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 #3B565A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.031
- Deep Teal #00555A ΔE 0.044
- Petrol #005F6A ΔE 0.045
- YInMn Blue #415A77 ΔE 0.049
- Dark Green Blue #1F6357 ΔE 0.049
- Dark Blue Green #005249 ΔE 0.058
- Dusty Grape #545775 ΔE 0.060
- Dark Grey Blue #29465B ΔE 0.060
Use #3B565A 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.