#3A6DA3
Closest named color: Muted Blue (#3B719F). oklch(52.5% 0.102 251.5), rgb(58, 109, 163).
Aa
White text reads best on this color (5.38:1).
About this color
#3A6DA3 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.102 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Muted Blue (#3B719F), ΔE 0.015 away. White text reads best on it, at 5.38:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Muted Blue (#3B719F) |
| Black text | 3.89:1 |
| White text | 5.38:1 |
Values
| HEX | #3A6DA3 |
| RGB | rgb(58, 109, 163) |
| HSL | hsl(211, 48%, 43%) |
| OKLCH | oklch(52.5% 0.102 251.5) |
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 #3A6DA3 | 5.38:1 | AA | Lc -82.0 | Fine for body text |
| Black text on #3A6DA3 | 3.89:1 | AA large text | Lc 27.4 | Dividers and decoration only |
| #3A6DA3 text on white | 5.38:1 | AA | Lc 76.7 | Fine for body text |
| #3A6DA3 text on black | 3.89:1 | AA large text | Lc -25.1 | 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 600.
-
Step 50
50
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E4EBF3
oklch(93.7% 0.013 251.6)
-
Step 200
200
#CDDBEA
oklch(88.5% 0.026 250)
-
Step 300
300
#ACC3DE
oklch(80.9% 0.046 252.5)
-
Step 400
400
#7FA4CD
oklch(70.7% 0.073 251.4)
-
Step 500
500
#5E8DC1
oklch(63.1% 0.094 251.8)
-
Step 600
600 (this color)
#3A6DA3
oklch(52.5% 0.102 251.5)
-
Step 700
700
#356395
oklch(49.1% 0.095 252.1)
-
Step 800
800
#2C5179
oklch(42.7% 0.079 251.8)
-
Step 900
900
#284361
oklch(37.6% 0.061 252.1)
-
Step 950
950
#182839
oklch(27.1% 0.038 250.8)
#3A6DA3 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) | #5670A5 | 0.033 |
| Deuteranopia (no green cones) | #4766A2 | 0.022 |
| Tritanopia (no blue cones) | #007A80 | 0.083 |
| Achromatopsia (no color) | #6A6A6A | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A6DA3
#3A6DA3
oklch(52.5% 0.102 251.5)
- #8E5F19
#8E5F19
oklch(52.4% 0.102 71.8)
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 #3A6DA3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muted Blue #3B719F ΔE 0.015
- Flat Blue #3C73A8 ΔE 0.018
- French Blue #436BAD ΔE 0.020
- Mid Blue #276AB3 ΔE 0.032
- Ocean Blue #03719C ΔE 0.033
- Dull Blue #49759C ΔE 0.034
- Nice Blue #107AB0 ΔE 0.041
- Denim #3B638C ΔE 0.042
Use #3A6DA3 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.