#3A6C9B
Closest named color: Muted Blue (#3B719F). oklch(51.8% 0.092 248.7), rgb(58, 108, 155).
Aa
White text reads best on this color (5.52:1).
About this color
#3A6C9B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.092 and its hue 249°. 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 5.52:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Muted Blue (#3B719F) |
| Black text | 3.79:1 |
| White text | 5.52:1 |
Values
| HEX | #3A6C9B |
| RGB | rgb(58, 108, 155) |
| HSL | hsl(209, 46%, 42%) |
| OKLCH | oklch(51.8% 0.092 248.7) |
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 #3A6C9B | 5.52:1 | AA | Lc -82.7 | Fine for body text |
| Black text on #3A6C9B | 3.79:1 | AA large text | Lc 26.6 | Dividers and decoration only |
| #3A6C9B text on white | 5.52:1 | AA | Lc 77.4 | Fine for body text |
| #3A6C9B text on black | 3.79:1 | AA large text | Lc -24.3 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CDDBE9
oklch(88.5% 0.025 248.1)
-
Step 300
300
#ABC4DD
oklch(81% 0.045 248.4)
-
Step 400
400
#7EA5CC
oklch(70.8% 0.072 248.9)
-
Step 500
500
#5C8EBF
oklch(63.2% 0.092 249)
-
Step 600
600
#4177AB
oklch(55.5% 0.1 249.2)
-
Step 700
700 (this color)
#3A6C9B
oklch(51.8% 0.092 248.7)
-
Step 800
800
#2A5277
oklch(42.7% 0.077 248.4)
-
Step 900
900
#274460
oklch(37.7% 0.06 248.9)
-
Step 950
950
#172838
oklch(27% 0.038 247.9)
#3A6C9B 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) | #586E9D | 0.036 |
| Deuteranopia (no green cones) | #4B649A | 0.027 |
| Tritanopia (no blue cones) | #00777D | 0.073 |
| Achromatopsia (no color) | #696969 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A6C9B
#3A6C9B
oklch(51.8% 0.092 248.7)
- #8B5D25
#8B5D25
oklch(51.7% 0.093 68.1)
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 #3A6C9B, 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 0.026
- Ocean Blue #03719C ΔE 0.030
- Denim #3B638C ΔE 0.032
- French Blue #436BAD ΔE 0.032
- Dull Blue #49759C ΔE 0.033
- Dusky Blue #475F94 ΔE 0.037
- Sea Blue #047495 ΔE 0.038
Use #3A6C9B 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.