#3B4991
Closest named color: Blueberry (#464196). oklch(43.3% 0.119 272.2), rgb(59, 73, 145).
Aa
White text reads best on this color (8.24:1).
About this color
#3B4991 is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.119 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.027 away. White text reads best on it, at 8.24:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.119) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.54:1 |
| White text | 8.24:1 |
Values
| HEX | #3B4991 |
| RGB | rgb(59, 73, 145) |
| HSL | hsl(230, 42%, 40%) |
| OKLCH | oklch(43.3% 0.119 272.2) |
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 #3B4991 | 8.24:1 | AAA | Lc -92.9 | Preferred for body text |
| Black text on #3B4991 | 2.54:1 | Fails | Lc 15.7 | Dividers and decoration only |
| #3B4991 text on white | 8.24:1 | AAA | Lc 88.3 | Fine for body text |
| #3B4991 text on black | 2.54:1 | Fails | Lc -13.9 | 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
#E5E9F8
oklch(93.5% 0.021 274)
-
Step 200
200
#D0D8F3
oklch(88.5% 0.038 272.5)
-
Step 300
300
#B1BFEE
oklch(81% 0.068 271.9)
-
Step 400
400
#899CE6
oklch(70.8% 0.111 272.3)
-
Step 500
500
#6C81DF
oklch(63% 0.143 272.2)
-
Step 600
600
#5669CC
oklch(55.6% 0.154 272.3)
-
Step 700
700
#4657B1
oklch(49.1% 0.144 272.1)
-
Step 800
800 (this color)
#3B4991
oklch(43.3% 0.119 272.2)
-
Step 900
900
#313D72
oklch(37.8% 0.092 271.8)
-
Step 950
950
#1D2443
oklch(27.1% 0.058 272.4)
#3B4991 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) | #255394 | 0.033 |
| Deuteranopia (no green cones) | #184B8F | 0.035 |
| Tritanopia (no blue cones) | #005966 | 0.105 |
| Achromatopsia (no color) | #4F4F4F | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B4991
#3B4991
oklch(43.3% 0.119 272.2)
- #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 #3B4991, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.027
- Cobalt #1E488F ΔE 0.033
- Dark Slate Blue #483D8B ΔE 0.035
- Dusk Blue #26538D ΔE 0.035
- Twilight #4E518B ΔE 0.040
- Light Navy #155084 ΔE 0.047
- Denim Blue #3B5B92 ΔE 0.051
- Dusk #4E5481 ΔE 0.054
Use #3B4991 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.