#3A656C
Closest named color: Slate (#516572). oklch(47.8% 0.049 208.9), rgb(58, 101, 108).
Aa
White text reads best on this color (6.44:1).
About this color
#3A656C is a medium-dark, muted teal or cyan. In OKLCH its lightness is 48%, its chroma 0.049 and its hue 209°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.031 away. White text reads best on it, at 6.44:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (48%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.25:1 |
| White text | 6.44:1 |
Values
| HEX | #3A656C |
| RGB | rgb(58, 101, 108) |
| HSL | hsl(188, 30%, 33%) |
| OKLCH | oklch(47.8% 0.049 208.9) |
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 #3A656C | 6.44:1 | AA | Lc -87.0 | Fine for body text |
| Black text on #3A656C | 3.25:1 | AA large text | Lc 22.1 | Dividers and decoration only |
| #3A656C text on white | 6.44:1 | AA | Lc 81.9 | Fine for body text |
| #3A656C text on black | 3.25:1 | AA large text | Lc -20.0 | 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 700.
-
Step 50
50
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E5EBEC
oklch(93.6% 0.007 208.8)
-
Step 200
200
#D0DCDE
oklch(88.6% 0.013 208.8)
-
Step 300
300
#B0C5C9
oklch(80.9% 0.024 210.4)
-
Step 400
400
#86A8AD
oklch(70.8% 0.038 207.4)
-
Step 500
500
#679299
oklch(63.1% 0.048 208.6)
-
Step 600
600
#4D7C84
oklch(55.6% 0.053 209.4)
-
Step 700
700 (this color)
#3A656C
oklch(47.8% 0.049 208.9)
-
Step 800
800
#33555B
oklch(42.6% 0.041 209.9)
-
Step 900
900
#2D464B
oklch(37.6% 0.032 211.5)
-
Step 950
950
#1B292C
oklch(27% 0.02 212.4)
#3A656C 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) | #5E626C | 0.047 |
| Deuteranopia (no green cones) | #565C6C | 0.043 |
| Tritanopia (no blue cones) | #226967 | 0.026 |
| Achromatopsia (no color) | #5E5E5E | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A656C
#3A656C
oklch(47.8% 0.049 208.9)
- #76534D
#76534D
oklch(47.8% 0.048 29.9)
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 #3A656C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.031
- Dark Aqua #05696B ΔE 0.033
- Petrol #005F6A ΔE 0.044
- YInMn Blue #415A77 ΔE 0.044
- Dark Green Blue #1F6357 ΔE 0.044
- Deep Turquoise #017374 ΔE 0.047
- Dark Aquamarine #017371 ΔE 0.048
- Denim #3B638C ΔE 0.055
Use #3A656C 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.