#3A6C8F
Closest named color: Denim (#3B638C). oklch(51.2% 0.078 241.1), rgb(58, 108, 143).
Aa
White text reads best on this color (5.64:1).
About this color
#3A6C8F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.078 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.026 away. White text reads best on it, at 5.64:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.72:1 |
| White text | 5.64:1 |
Values
| HEX | #3A6C8F |
| RGB | rgb(58, 108, 143) |
| HSL | hsl(205, 42%, 39%) |
| OKLCH | oklch(51.2% 0.078 241.1) |
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 #3A6C8F | 5.64:1 | AA | Lc -83.3 | Fine for body text |
| Black text on #3A6C8F | 3.72:1 | AA large text | Lc 26.0 | Dividers and decoration only |
| #3A6C8F text on white | 5.64:1 | AA | Lc 78.1 | Fine for body text |
| #3A6C8F text on black | 3.72:1 | AA large text | Lc -23.7 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CEDBE6
oklch(88.5% 0.021 243.4)
-
Step 300
300
#ACC4D7
oklch(80.8% 0.038 241.9)
-
Step 400
400
#7FA6C3
oklch(70.7% 0.06 240.9)
-
Step 500
500
#5E90B4
oklch(63.2% 0.077 240.8)
-
Step 600
600
#4379A0
oklch(55.6% 0.084 241.8)
-
Step 700
700 (this color)
#3A6C8F
oklch(51.2% 0.078 241.1)
-
Step 800
800
#2C536F
oklch(42.6% 0.064 241.6)
-
Step 900
900
#28455A
oklch(37.7% 0.05 241.3)
-
Step 950
950
#182835
oklch(26.9% 0.033 243.9)
#3A6C8F 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) | #5C6C91 | 0.040 |
| Deuteranopia (no green cones) | #51638E | 0.034 |
| Tritanopia (no blue cones) | #007578 | 0.061 |
| Achromatopsia (no color) | #676767 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A6C8F
#3A6C8F
oklch(51.2% 0.078 241.1)
- #875C36
#875C36
oklch(51.2% 0.078 61.2)
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 #3A6C8F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.026
- Muted Blue #3B719F ΔE 0.027
- Ocean Blue #03719C ΔE 0.032
- Sea Blue #047495 ΔE 0.032
- Metallic Blue #4F738E ΔE 0.033
- Dull Blue #49759C ΔE 0.036
- Peacock Blue #016795 ΔE 0.039
- Flat Blue #3C73A8 ΔE 0.041
Use #3A6C8F 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.