#3A5866
Closest named color: YInMn Blue (#415A77). oklch(44.3% 0.042 228.9), rgb(58, 88, 102).
Aa
White text reads best on this color (7.58:1).
About this color
#3A5866 is a dark, muted teal or cyan. In OKLCH its lightness is 44%, its chroma 0.042 and its hue 229°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.030 away. White text reads best on it, at 7.58:1.
| Hue family | Teals and cyans |
| Lightness | dark (44%) |
| Chroma | muted (0.042) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.76:1 |
| White text | 7.58:1 |
Values
| HEX | #3A5866 |
| RGB | rgb(58, 88, 102) |
| HSL | hsl(199, 28%, 31%) |
| OKLCH | oklch(44.3% 0.042 228.9) |
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 #3A5866 | 7.58:1 | AAA | Lc -91.1 | Preferred for body text |
| Black text on #3A5866 | 2.76:1 | Fails | Lc 17.7 | Dividers and decoration only |
| #3A5866 text on white | 7.58:1 | AAA | Lc 86.3 | Fine for body text |
| #3A5866 text on black | 2.76:1 | Fails | Lc -15.8 | 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
#E5EBEE
oklch(93.6% 0.008 228.9)
-
Step 200
200
#D0DBE0
oklch(88.5% 0.014 226.6)
-
Step 300
300
#B1C4CD
oklch(80.9% 0.024 227.8)
-
Step 400
400
#88A6B4
oklch(70.7% 0.039 227.9)
-
Step 500
500
#6990A2
oklch(63.1% 0.051 228.2)
-
Step 600
600
#507A8D
oklch(55.6% 0.055 228.2)
-
Step 700
700
#416778
oklch(49.2% 0.051 228.1)
-
Step 800
800 (this color)
#3A5866
oklch(44.3% 0.042 228.9)
-
Step 900
900
#2F4550
oklch(37.7% 0.033 230.4)
-
Step 950
950
#1C292F
oklch(27.2% 0.021 228.1)
#3A5866 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) | #515767 | 0.031 |
| Deuteranopia (no green cones) | #4A5266 | 0.027 |
| Tritanopia (no blue cones) | #295C5C | 0.030 |
| Achromatopsia (no color) | #545454 | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A5866
#3A5866
oklch(44.3% 0.042 228.9)
- #674C3F
#674C3F
oklch(44.2% 0.042 46.9)
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 #3A5866, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.030
- Petrol #005F6A ΔE 0.040
- Dark Slate Gray #2F4F4F ΔE 0.046
- Dusty Grape #545775 ΔE 0.046
- Deep Teal #00555A ΔE 0.050
- Slate #516572 ΔE 0.054
- Dark Green Blue #1F6357 ΔE 0.055
- Light Navy Blue #2E5A88 ΔE 0.056
Use #3A5866 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.