#3B5CAF
Closest named color: Mid Blue (#276AB3). oklch(49.4% 0.138 265.4), rgb(59, 92, 175).
Aa
White text reads best on this color (6.29:1).
About this color
#3B5CAF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.138 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.039 away. White text reads best on it, at 6.29:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.138) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.33:1 |
| White text | 6.29:1 |
Values
| HEX | #3B5CAF |
| RGB | rgb(59, 92, 175) |
| HSL | hsl(223, 50%, 46%) |
| OKLCH | oklch(49.4% 0.138 265.4) |
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 #3B5CAF | 6.29:1 | AA | Lc -86.2 | Fine for body text |
| Black text on #3B5CAF | 3.33:1 | AA large text | Lc 23.0 | Dividers and decoration only |
| #3B5CAF text on white | 6.29:1 | AA | Lc 81.1 | Fine for body text |
| #3B5CAF text on black | 3.33:1 | AA large text | Lc -20.8 | 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
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CDD9F2
oklch(88.4% 0.037 265.1)
-
Step 300
300
#ACC1ED
oklch(81% 0.067 264.9)
-
Step 400
400
#809FE4
oklch(70.7% 0.107 265.3)
-
Step 500
500
#6186DC
oklch(63.2% 0.136 265.2)
-
Step 600
600
#496EC9
oklch(55.7% 0.147 265.3)
-
Step 700
700 (this color)
#3B5CAF
oklch(49.4% 0.138 265.4)
-
Step 800
800
#304B8D
oklch(42.8% 0.114 265.2)
-
Step 900
900
#2A3F70
oklch(37.6% 0.088 265)
-
Step 950
950
#192542
oklch(27% 0.057 265.8)
#3B5CAF 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) | #3266B2 | 0.027 |
| Deuteranopia (no green cones) | #1A5BAD | 0.028 |
| Tritanopia (no blue cones) | #006F7D | 0.114 |
| Achromatopsia (no color) | #606060 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B5CAF
#3B5CAF
oklch(49.4% 0.138 265.4)
- #7C5C00
#7C5C00
oklch(49.4% 0.101 84.9)
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 #3B5CAF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.039
- French Blue #436BAD ΔE 0.045
- Denim Blue #3B5B92 ΔE 0.047
- Dusky Blue #475F94 ΔE 0.048
- Iris #6258C4 ΔE 0.063
- Twilight #4E518B ΔE 0.063
- Denim #3B638C ΔE 0.064
- Dusk Blue #26538D ΔE 0.064
Use #3B5CAF 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.