#3B5BAB
Closest named color: Denim Blue (#3B5B92). oklch(48.9% 0.133 265.4), rgb(59, 91, 171).
Aa
White text reads best on this color (6.42:1).
About this color
#3B5BAB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.133 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.041 away. White text reads best on it, at 6.42:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.133) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.27:1 |
| White text | 6.42:1 |
Values
| HEX | #3B5BAB |
| RGB | rgb(59, 91, 171) |
| HSL | hsl(223, 49%, 45%) |
| OKLCH | oklch(48.9% 0.133 265.4) |
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 #3B5BAB | 6.42:1 | AA | Lc -86.7 | Fine for body text |
| Black text on #3B5BAB | 3.27:1 | AA large text | Lc 22.4 | Dividers and decoration only |
| #3B5BAB text on white | 6.42:1 | AA | Lc 81.6 | Fine for body text |
| #3B5BAB text on black | 3.27:1 | AA large text | Lc -20.3 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CED9F2
oklch(88.5% 0.036 266.7)
-
Step 300
300
#ADC1EB
oklch(81% 0.064 265)
-
Step 400
400
#829FE1
oklch(70.7% 0.103 265.7)
-
Step 500
500
#6386D9
oklch(63.1% 0.132 265.5)
-
Step 600
600
#4A6EC6
oklch(55.6% 0.143 265.3)
-
Step 700
700 (this color)
#3B5BAB
oklch(48.9% 0.133 265.4)
-
Step 800
800
#314B8B
oklch(42.7% 0.111 265.4)
-
Step 900
900
#2B3F6F
oklch(37.6% 0.086 265.4)
-
Step 950
950
#192541
oklch(26.9% 0.055 265.3)
#3B5BAB 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) | #3364AE | 0.024 |
| Deuteranopia (no green cones) | #1E5AA9 | 0.026 |
| Tritanopia (no blue cones) | #006D7A | 0.111 |
| Achromatopsia (no color) | #5F5F5F | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B5BAB
#3B5BAB
oklch(48.9% 0.133 265.4)
- #7A5B00
#7A5B00
oklch(49% 0.1 85.4)
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 #3B5BAB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.041
- Mid Blue #276AB3 ΔE 0.041
- Dusky Blue #475F94 ΔE 0.043
- French Blue #436BAD ΔE 0.047
- Twilight #4E518B ΔE 0.057
- Dusk Blue #26538D ΔE 0.058
- Denim #3B638C ΔE 0.059
- Light Navy Blue #2E5A88 ΔE 0.060
Use #3B5BAB 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.