#3B4D9D
Closest named color: Blueberry (#464196). oklch(45% 0.131 270.8), rgb(59, 77, 157).
Aa
White text reads best on this color (7.67:1).
About this color
#3B4D9D is a dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.131 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.033 away. White text reads best on it, at 7.67:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.131) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.73:1 |
| White text | 7.67:1 |
Values
| HEX | #3B4D9D |
| RGB | rgb(59, 77, 157) |
| HSL | hsl(229, 45%, 42%) |
| OKLCH | oklch(45% 0.131 270.8) |
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 #3B4D9D | 7.67:1 | AAA | Lc -91.2 | Preferred for body text |
| Black text on #3B4D9D | 2.73:1 | Fails | Lc 17.6 | Dividers and decoration only |
| #3B4D9D text on white | 7.67:1 | AAA | Lc 86.4 | Fine for body text |
| #3B4D9D text on black | 2.73:1 | Fails | Lc -15.7 | 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 800.
-
Step 50
50
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4E9F9
oklch(93.5% 0.022 272.1)
-
Step 200
200
#CED8F6
oklch(88.4% 0.043 270.9)
-
Step 300
300
#AEBFF3
oklch(81% 0.076 270.6)
-
Step 400
400
#849CED
oklch(70.8% 0.122 270.5)
-
Step 500
500
#6781E7
oklch(63.2% 0.156 270.6)
-
Step 600
600
#5067D6
oklch(55.6% 0.172 271)
-
Step 700
700
#4155B9
oklch(49% 0.159 270.9)
-
Step 800
800 (this color)
#3B4D9D
oklch(45% 0.131 270.8)
-
Step 900
900
#2E3C77
oklch(37.7% 0.102 270.8)
-
Step 950
950
#1B2446
oklch(27.1% 0.064 270.5)
#3B4D9D 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) | #2258A0 | 0.035 |
| Deuteranopia (no green cones) | #0A4F9B | 0.039 |
| Tritanopia (no blue cones) | #005F6D | 0.113 |
| Achromatopsia (no color) | #535353 | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B4D9D
#3B4D9D
oklch(45% 0.131 270.8)
- #685200
#685200
oklch(44.8% 0.092 90.8)
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 #3B4D9D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.033
- Dusk Blue #26538D ΔE 0.040
- Twilight #4E518B ΔE 0.043
- Cobalt #1E488F ΔE 0.043
- Denim Blue #3B5B92 ΔE 0.046
- Dark Slate Blue #483D8B ΔE 0.049
- Light Navy Blue #2E5A88 ΔE 0.056
- Light Navy #155084 ΔE 0.057
Use #3B4D9D 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.