#3A6789
Closest named color: Denim (#3B638C). oklch(49.6% 0.074 242.8), rgb(58, 103, 137).
Aa
White text reads best on this color (6.03:1).
About this color
#3A6789 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.074 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.014 away. White text reads best on it, at 6.03:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.48:1 |
| White text | 6.03:1 |
Values
| HEX | #3A6789 |
| RGB | rgb(58, 103, 137) |
| HSL | hsl(206, 41%, 38%) |
| OKLCH | oklch(49.6% 0.074 242.8) |
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 #3A6789 | 6.03:1 | AA | Lc -85.2 | Fine for body text |
| Black text on #3A6789 | 3.48:1 | AA large text | Lc 24.1 | Dividers and decoration only |
| #3A6789 text on white | 6.03:1 | AA | Lc 80.0 | Fine for body text |
| #3A6789 text on black | 3.48:1 | AA large text | Lc -21.8 | 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 700.
-
Step 50
50
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBF0
oklch(93.6% 0.01 238.5)
-
Step 200
200
#CEDBE5
oklch(88.5% 0.02 240.8)
-
Step 300
300
#ADC4D6
oklch(80.9% 0.036 241.6)
-
Step 400
400
#82A5C2
oklch(70.6% 0.057 243.7)
-
Step 500
500
#618FB2
oklch(63.1% 0.073 242.1)
-
Step 600
600
#47799E
oklch(55.6% 0.079 242.1)
-
Step 700
700 (this color)
#3A6789
oklch(49.6% 0.074 242.8)
-
Step 800
800
#2F536E
oklch(42.7% 0.061 242.5)
-
Step 900
900
#2A4559
oklch(37.8% 0.048 241.7)
-
Step 950
950
#192834
oklch(26.9% 0.03 243.3)
#3A6789 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) | #58678B | 0.037 |
| Deuteranopia (no green cones) | #4E5F88 | 0.031 |
| Tritanopia (no blue cones) | #006F73 | 0.059 |
| Achromatopsia (no color) | #636363 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A6789
#3A6789
oklch(49.6% 0.074 242.8)
- #805933
#805933
oklch(49.7% 0.074 64)
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 #3A6789, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.014
- Dusky Blue #475F94 ΔE 0.036
- Peacock Blue #016795 ΔE 0.036
- Muted Blue #3B719F ΔE 0.041
- Ocean Blue #03719C ΔE 0.042
- YInMn Blue #415A77 ΔE 0.042
- Denim Blue #3B5B92 ΔE 0.042
- Slate #516572 ΔE 0.042
Use #3A6789 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.