#3B4A8F
Closest named color: Blueberry (#464196). oklch(43.3% 0.115 271.6), rgb(59, 74, 143).
Aa
White text reads best on this color (8.19:1).
About this color
#3B4A8F is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.115 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.030 away. White text reads best on it, at 8.19:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.115) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.56:1 |
| White text | 8.19:1 |
Values
| HEX | #3B4A8F |
| RGB | rgb(59, 74, 143) |
| HSL | hsl(229, 42%, 40%) |
| OKLCH | oklch(43.3% 0.115 271.6) |
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 #3B4A8F | 8.19:1 | AAA | Lc -92.8 | Preferred for body text |
| Black text on #3B4A8F | 2.56:1 | Fails | Lc 15.9 | Dividers and decoration only |
| #3B4A8F text on white | 8.19:1 | AAA | Lc 88.1 | Fine for body text |
| #3B4A8F text on black | 2.56:1 | Fails | Lc -14.0 | Not readable |
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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F7
oklch(93.5% 0.019 273.2)
-
Step 200
200
#D0D8F3
oklch(88.5% 0.038 272.5)
-
Step 300
300
#B1BFED
oklch(81% 0.067 271.6)
-
Step 400
400
#899CE4
oklch(70.7% 0.108 272.1)
-
Step 500
500
#6C82DC
oklch(63% 0.138 271.6)
-
Step 600
600
#556AC9
oklch(55.6% 0.148 271.4)
-
Step 700
700
#4658AE
oklch(49.1% 0.138 271.6)
-
Step 800
800 (this color)
#3B4A8F
oklch(43.3% 0.115 271.6)
-
Step 900
900
#313D71
oklch(37.7% 0.09 271.7)
-
Step 950
950
#1D2442
oklch(27% 0.057 272.2)
#3B4A8F 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) | #295392 | 0.029 |
| Deuteranopia (no green cones) | #1D4C8E | 0.031 |
| Tritanopia (no blue cones) | #025965 | 0.102 |
| Achromatopsia (no color) | #4F4F4F | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B4A8F
#3B4A8F
oklch(43.3% 0.115 271.6)
- #624E00
#624E00
oklch(43.2% 0.088 91.8)
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 #3B4A8F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.030
- Dusk Blue #26538D ΔE 0.032
- Cobalt #1E488F ΔE 0.033
- Twilight #4E518B ΔE 0.037
- Dark Slate Blue #483D8B ΔE 0.037
- Light Navy #155084 ΔE 0.044
- Denim Blue #3B5B92 ΔE 0.048
- Dusk #4E5481 ΔE 0.050
Use #3B4A8F 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.